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Do any non-drug treatments help back pain? Here’s what the evidence says

<div class="theconversation-article-body"> Jason, a 42-year-old father of two, has been battling back pain for weeks. Scrolling through his phone, he sees ad after ad promising relief: chiropractic alignments, acupuncture, back braces, vibrating massage guns and herbal patches. His GP told him to “stay active”, but what does that even mean when every movement hurts? Jason wants to avoid strong painkillers and surgery, but with so many options (and opinions), it’s hard to know what works and what’s just marketing hype. If Jason’s experience sounds familiar, you’re not alone. Back pain is one of the most common reasons people visit a doctor. It can be challenging to manage, mainly due to widespread <a href="https://theconversation.com/having-good-posture-doesnt-prevent-back-pain-and-bad-posture-doesnt-cause-it-183732">misunderstandings</a> and the <a href="https://ebm.bmj.com/content/early/2025/03/02/bmjebm-2024-112974">overwhelming number</a> of ineffective and uncertain treatments promoted. We assessed the best available evidence of non-drug and non-surgical treatments to alleviate low back pain. <a href="https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD014691.pub2/full">Our review</a> – published today by the independent, international group the Cochrane Collaboration – includes 31 Cochrane systematic reviews, covering 97,000 people with back pain. It <a href="https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD014691.pub2/full">shows</a> bed rest doesn’t work for back pain. Some of the treatments that do work can depend on how long you’ve been in pain. <h2>Is back pain likely to be serious?</h2> There are different types of low back pain. It can: <ul> <li>be short-lived, lasting less than six weeks (acute back pain)</li> <li>linger for a bit longer, for six to twelve weeks (sub-acute)</li> <li>stick around for months and even years (chronic, defined as more than 12 weeks).</li> </ul> In <a href="https://www.thelancet.com/article/S0140-6736(16)30970-9/abstract">most cases</a> (90-95%), back pain is non-specific and cannot be reliably linked to a specific cause or underlying disease. This includes common structural changes seen in x-rays and MRIs of the spine. For this reason, imaging of the back is <a href="https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(09)60172-0/abstract">only</a> recommended in rare situations – typically when there’s a clear suspicion of serious back issues, such as after physical trauma or when there is numbness or loss of sensation in the groin or legs. Many people expect to receive <a href="https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD013815.pub2/full">painkillers</a> for their back pain or even surgery, but these are no longer the front-line treatment options due to limited benefits and the high risk of harm. International <a href="https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(18)30489-6/fulltext">clinical guidelines</a> recommend people choose non-drug and non-surgical treatments to relieve their pain, improve function and reduce the distress commonly associated with back pain. So what works for different types of pain? Here’s what <a href="https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD014691.pub2/full">our review found</a> when researchers compared these treatments with standard care (the typical treatment patients usually receive) or no treatment. <h2>What helps for short-term back pain</h2> 1. Stay active – don’t rest in bed If your back pain is new, the best advice is also one of the simplest: keep moving despite the pain. Changing the way you move and use your body to protect it, or resting in bed, can seem like to right way to respond to pain – and may have even been recommended in the past. But we know know this excessive protective behaviour can make it harder to return to meaningful activities. This doesn’t mean pushing through pain or hitting the gym, but instead, trying to maintain your usual routines as much as possible. Evidence suggests that doing so won’t make your pain worse, and may improve it. 2. Multidisciplinary care, if pain lingers For pain lasting six to 12 weeks, multidisciplinary treatment is likely to reduce pain compared to standard care. This involves a coordinated team of doctors, physiotherapists and psychologists working together to address the many factors contributing to your back pain persisting: <ul> <li> neurophysiological influences refer to how your nervous system is currently processing pain. It can make you more sensitive to signals from movements, thoughts, feelings and environment </li> <li> psychological factors include how your thoughts, feelings and behaviours affect your pain system and, ultimately, the experience of pain you have </li> <li> occupational factors include the physical demands of your job and how well you can manage them, as well as aspects like low job satisfaction, all of which can contribute to ongoing pain. </li> </ul> <h2>What works for chronic back pain</h2> Once pain has been around for more than 12 weeks, it can become more difficult to treat. But relief is still possible. Exercise therapy Exercise – especially programs tailored to your needs and preferences – is likely to reduce pain and help you move better. This could include aerobic activity, strength training or Pilates-based movements. It doesn’t seem to matter what type of exercise you do – it matters more that you are consistent and have the right level of supervision, especially early on. Multidisciplinary treatment As with short-term pain, coordinated care involving a mix of physical, occupational and psychological approaches likely works better than usual care alone. Psychological therapies Psychological therapies for chronic pain include approaches to help people change thinking, feelings, behaviours and reactions that might sustain persistent pain. These approaches are likely to reduce pain, though they may not be as effective in improving physical function. Acupuncture Acupuncture probably reduces pain and improves how well you can function compared to placebo or no treatment. While some debate remains about how it works, the evidence suggests potential benefits for some people with chronic back pain. <h2>What doesn’t work or still raises uncertainty?</h2> The review found that many commonly advertised treatments still have uncertain benefits or probably do not benefit people with back pain. Spinal manipulation, for example, has uncertain benefits in acute and chronic back pain, and it likely does not improve how well you function if you have acute back pain. Traction, which involves stretching the spine using weights or pulleys, probably doesn’t help with chronic back pain. Despite its popularity in some circles, there’s little evidence that it works. There isn’t enough reliable data to determine whether advertised treatments – such back braces, vibrating massage guns and herbal patches – are effective. <h2>How can you use the findings?</h2> If you have back pain, start by considering how long you’ve had it. Then explore treatment options that research supports and discuss them with your GP, psychologist or physiotherapist. Your health provider should reassure you about the importance of gradually increasing your activity to resume meaningful work, social and life activities. They should also support you in making informed decisions about which treatments are most appropriate for you at this stage. <img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/253122/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" />By <a href="https://theconversation.com/profiles/rodrigo-rossi-nogueira-rizzo-1544189">Rodrigo Rossi Nogueira Rizzo</a>, Postdoctoral Research Fellow, <a href="https://theconversation.com/institutions/neuroscience-research-australia-976">Neuroscience Research Australia</a> and <a href="https://theconversation.com/profiles/aidan-cashin-2355450">Aidan Cashin</a>, NHMRC Emerging Leadership Fellow, <a href="https://theconversation.com/institutions/neuroscience-research-australia-976">Neuroscience Research Australia</a> This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/do-any-non-drug-treatments-help-back-pain-heres-what-the-evidence-says-253122">original article</a>. Image: Shutterstock </div>

Body

Why do I grieve my childhood home so much now we’ve sold it?

<div class="theconversation-article-body"> Grief can hit us in powerful and unanticipated ways. You might expect to grieve a person, a pet or even a former version of yourself – but many people are surprised by the depth of sad yearning they can feel after selling the childhood home. In fact, it is <a href="https://link.springer.com/article/10.1007/s10615-018-0682-5">normal to grieve a place</a>. And this grief can be especially profound if it coincides with a parent dying or moving into residential aged care, leading to the sale of their house. Grief is the response to the loss of anything to which we have an emotional connection. A <a href="https://link.springer.com/article/10.1007/s10615-018-0682-5">growing body</a> of <a href="https://www.taylorfrancis.com/books/mono/10.4324/9780203860731/counting-losses-darcy-harris">research</a> is looking at how grief can extend to “non-person” losses such as infertility, loss of religion and, yes, the loss of a former home. <h2>Why would someone grieve a house?</h2> The childhood home can be an important place for many of us. It literally housed our formative development, family bonds, and core memories. Hopefully, the childhood home is where we learned about safety, security and love. It was likely surrounded by our neighbourhood, and close to important places such as school, playgrounds and friends’ houses. It is no wonder we grieve it when it’s gone. It’s normal to <a href="https://www.taylorfrancis.com/chapters/edit/10.4324/9781315126197-20/grieving-lost-home-marc-fried">grieve things we can’t see and touch</a> but are real and valued. Just as a <a href="https://doi.org/10.1002/pon.70031">serious diagnosis might trigger</a> grief for an imagined future for yourself, or an <a href="https://doi.org/10.1177/1049732314538550">identity</a> you once cherished, loss of a childhood home can hit us harder than we think. When you sell a once-beloved home, you don’t just lose the physical space. You also lose all of what that space might represent, such as birthday celebrations, Christmas lunches, sleepovers with friends or many happy hours playing in the garden. The childhood home often is a symbol of family connection and an anchor in the storm of life. Thinking of the home and all it represents can elicit nostalgia. In fact, the word “nostalgia” <a href="https://www.bps.org.uk/psychologist/nostalgia-cowbells-meaning-life">derives from the Greek</a> words nostos (return) and algos (pain). The word is rooted in the pain we often feel being away from home. And just as siblings are unique – each with different memories of and connections to their childhood home – their responses to its sale can differ markedly. It is normal if your sister or brother grieves the home in a different way to you – or maybe doesn’t even seem to grieve its loss at all. <h2>A complicated grief</h2> When a childhood home is sold because of the death of parents, the feelings of loss about the home are closely linked. The home being sold can be a type of secondary loss that sits in the periphery to the primary loss of parents. Grieving the deaths might, at first, take precedence over the loss of the home. It might only be later that the loss of the home and all it represents becomes apparent. Because the home provides a connection to the deceased person, the loss of the home might add another layer of grief about your parents. Perhaps you find that whenever you recall memories of mum or dad, they seem always to be at the house. It’s also normal if you feel immense <a href="https://link.springer.com/article/10.1007/s10615-018-0682-5">guilt</a> about grieving the home. People might chastise themselves for worrying about “silly things” and not grieving “enough” about the person who died. <a href="https://www.agingcare.com/questions/how-do-i-deal-with-the-guilt-of-selling-moms-house-481550.htm">Guilt about selling the home</a> can also be common. Not everyone has positive memories of their childhood home. Difficult family dynamics, maltreatment and abuse can complicate the emotional connection to childhood spaces and the grief response to their loss. In such cases, the loss of the childhood home can elicit grief about the loss of the childhood that could have – and should have – been. The loss of a home that was the site of discord can be even more challenging than for people with more idyllic childhood experiences. <h2>How can I cope with this loss?</h2> Grief from the loss of a childhood home is <a href="https://link.springer.com/article/10.1007/s10615-018-0682-5">real and valid</a>. We should recognise this and be kind to ourselves and others experiencing it. We shouldn’t minimise the loss or make fun of it. Usually, the loss is anticipated, and this allows you to take photos, furniture or mementos from the home or garden before you leave or sell. Grief researchers call these “<a href="https://www.sciencedirect.com/science/article/pii/S0010440X20300031">transitional</a> <a href="https://www.tandfonline.com/doi/abs/10.1080/13576270412331329812">objects</a>”. They may help you maintain a connection to what is lost, while still grieving the place. <a href="https://link.springer.com/article/10.1007/s10615-018-0682-5">Social support</a> while grieving is important. Some people share memories and photos of the home with their siblings, or derive comfort from driving by the home. Just be prepared for the possibility it will likely change as the new owners adapt it to their needs. You might feel affronted, but hopefully can eventually accept the property now belongs to someone else. Chat to your doctor if the loss is particularly difficult, and your grief doesn’t change and subside over time. They might be able to recommend a psychologist who specialises in grief. If this article has raised issues for you, or if you’re concerned about someone you know, call Lifeline on 13 11 14.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/251058/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> By <a href="https://theconversation.com/profiles/lauren-breen-1142446">Lauren Breen</a>, Professor of Psychology, <a href="https://theconversation.com/institutions/curtin-university-873">Curtin University</a> This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/why-do-i-grieve-my-childhood-home-so-much-now-weve-sold-it-and-what-can-i-do-about-it-251058">original article</a>. Image: RDNE Stock project/Pexels </div>

Home & Garden

‘Don’t panic, do prepare’: why it’s not too late to plan for Cyclone Alfred

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/yetta-gurtner-2337172">Yetta Gurtner</a>, <a href="https://theconversation.com/institutions/james-cook-university-1167">James Cook University</a> For millions of people in southeast Queensland and northern New South Wales, Cyclone Alfred will be their first experience living through a cyclone. Alfred is forecast to make landfall about 2am on Friday morning. I am a disaster expert based in northern Queensland, which regularly experiences cyclones. In my other role as an acting SES public information officer, I’m heading south to the Gold Coast to help residents prepare and respond. Here’s what I want you to know. First, don’t panic. Second, do prepare. Preparation has several steps. It’s important to clearly assess your specific threat. If you live near the sea, storm surges – where the sea spills inland – could be a significant threat, while flooding might pose a large risk if you live near a river – especially in the few days after Alfred passes. The highest rainfall is likely on Alfred’s southern flank from the Gold Coast down to northern New South Wales. Having enough food, water and medication is vital. Be ready to evacuate too, in case authorities deem it necessary. Check your local council’s disaster website, disaster apps and stay tuned to the ABC, which will run disaster alerts. <figure><iframe src="https://www.youtube.com/embed/EN_yKcjlF20?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption>The Bureau of Meteorology’s latest update on Cyclone Alfred’s path and likely impact, as of the morning of Wed 5th March.</figcaption></figure> <h2>What should I do right now?</h2> If you’re in the <a href="http://www.bom.gov.au/products/IDQ65002.shtml">danger zone</a>, make preparations now, before the full intensity of the cyclone arrives. Tie down loose objects. Clean gutters to avoid overflow from torrential rain. And prepare your “go bag” – a bag of essentials you can throw in the car if authorities tell you to leave immediately. Don’t take too much – just the bare necessities. Buy an AM/FM radio and tune it to ABC National, as you cannot be sure mobile networks will function. Radio is a reliable way to get good information from the ABC, Australia’s designated <a href="https://www.abc.net.au/emergency">emergency channel</a>. Make sure the car is fuelled or charged. If you’ve got a generator, make sure you have fuel and the generator is positioned outside in a well-ventilated area. Water is often unreliable after disasters. Fill your bathtub or front-loader washing machine with water. Put containers of water in your freezer, to keep food cold if the power goes out and as another water source. Plan for days of power outages. Protect windows with plywood, heavy blankets or mattresses. Put a mattress between your car and garage roller door to stop it blowing in. Turn off gas, electricity and solar power. Authorities recommend using sandbags to reduce the chance of water getting in. You can get sacks from hardware stores or council-run emergency centres, if available, who also provide sand. You also need plastic sheeting. If there’s a shortage of sand, you can use garden soil or commercial bagged soil. If you can’t get sacks, large plastic shopping bags will do. Tape strong plastic sheeting around the door or low window where water might get in. This is the barrier that actually keeps water out – sandbags keep it in place. Fill sandbags and lay them <a href="https://www.ses.nsw.gov.au/during-emergency/sandbags">like bricks</a>. Lay one row, and lay the next row offset for strength. Sandbags are good, but they have limits. There’s little point in piling sandbags higher than about 30 centimetres. If floodwaters edge higher, water will get through. Many people have had the unpleasant experience of having effluent come back up through toilets during cyclones and subsequent flooding. To stop this, cover your toilet with plastic sheeting (directly on the porcelain) and put a sandbag on top for weight. Do the same for any drains where water might flow back up. To reduce water damage, put valuable or important items up high, atop tables or bunk beds or upstairs if you have a second storey. <h2>What will it be like when Alfred hits?</h2> When the cyclone first hits, it can be overwhelming. The sound is like a roaring jet engine. If you haven’t been advised to evacuate by authorities, you will be sheltering in place. This means finding the safest room in the house, to avoid damage from flying objects. Choose the smallest room with the fewest windows – a bathroom or a room under the stairs. Basements are very safe, but will be the first affected by water. As the cyclone picks up intensity, set up inside this safe room with your pets and children. Do not leave this room until you have been told it’s safe by authorities. At the centre of strong cyclones is the eye of the storm, which we experience as a period of sudden calm. People often make the mistake of thinking it’s over. But in fact, it’s just a brief reprieve before the intense winds pick up again. Don’t make the mistake of leaving the house – check with authoritative sources. Cyclone Alfred is a <a href="https://www.abc.net.au/news/2025-03-05/cyclone-alfred-unusual-triplet-storm-climate-change-factors/105008704">slow-moving cyclone</a>, which means you might be stuck inside for a while. Be prepared to be inside your house for up to 24 hours, even after the worst has passed. This is because there may well be downed powerlines with live electricity, broken glass, falling trees and so on. For your children (and yourself), being in the cyclone is frightening. Young kids find the sound chilling. You can play music through headphones to help soothe them. Board games, books and puzzles can help pass the time. You will need distraction. Have a bucket in the corner for emergency toilet needs. Keep track of the storm and any emerging dangers through your radio and internet-enabled phone (if still functioning). <h2>What if I have to evacuate?</h2> Authorities are working to set up evacuation centres for people whose homes may not be safe. Authorities will go door-to-door to tell affected residents to leave, as well as broadcasting the information on radio and online. You’re more likely to have to evacuate if your house is on low-lying land near the sea, as a storm surge is likely. How much water is pushed ashore will depend on the tide, but it could be as high as 70cm above the high tide line if we’re unlucky. Evacuations can happen after the cyclone too. Alfred is packing a lot of rain – <a href="https://www.weatherzone.com.au/news/tropical-cyclone-alfred-could-disrupt-afl-and-nrl-matches/1890420">up to a metre</a> in some areas. That’s very likely to cause flooding, both flash floods and rivers breaking their banks. If you are asked to evacuate, you can go to the house of a friend or family member if it’s on higher ground and outside the flood risk zones. Or you can go to a local evacuation centre – check your council website to see where your closest one is. Take as little as possible with you. Many people who choose not to evacuate do so because they’re worried about their pets. This is risky. Some evacuation centres do take pets, so check now. If they don’t, look for other options with friends and family. Staying put after an evacuation order is dangerous. <h2>What will happen after the cyclone?</h2> Cyclone Alfred brings three threats: intense winds, high seas and heavy rain. After the intense winds die down, the seas will be dangerous for days after Alfred. There are coastal hazard warnings for about 1,000km of coastline. Cyclones also often decay into tropical low weather systems, which dump heavy rain for days. This is likely. As you move into recovery phase, don’t relax your guard. In far north Queensland, 16 people have <a href="https://www.abc.net.au/news/2025-03-04/melioidosis-death-toll-rises-in-queensland/105009772">now died</a> after being infected with melioidosis, a bacterium found in mud. The bug is <a href="https://theconversation.com/theres-an-outbreak-of-melioidosis-in-north-queensland-heres-what-to-know-about-this-deadly-mud-bug-250392">more prevalent</a> after heavy rainfall. Wear protective gear such as gloves and face masks when dealing with water-damaged goods and mud, and pay close attention to the latest advice authorities are giving. But remember – don’t panic. We will get through this.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/251463/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/yetta-gurtner-2337172">Yetta Gurtner</a>, Adjunct Senior Lecturer, Centre for Disaster Studies, <a href="https://theconversation.com/institutions/james-cook-university-1167">James Cook University</a> Image credits: LUKAS COCH/EPA-EFE/Shutterstock Editorial This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/dont-panic-do-prepare-why-its-not-too-late-to-plan-for-cyclone-alfred-251463">original article</a>. </div>

Travel Trouble

Around 3% of us will develop a brain aneurysm in our lives. So what is it and how do you treat it?

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/theresa-larkin-952095">Theresa Larkin</a>, <a href="https://theconversation.com/institutions/university-of-wollongong-711">University of Wollongong</a> and <a href="https://theconversation.com/profiles/jessica-nealon-1481995">Jessica Nealon</a>, <a href="https://theconversation.com/institutions/university-of-wollongong-711">University of Wollongong</a> Australian radio host Kyle Sandilands announced on air that he <a href="https://www.abc.net.au/news/2025-02-03/kyle-sandilands-brain-aneurysm-diagnosis/104888826">has a brain aneurysm</a> and needs urgent brain surgery. Typically an aneurysm occurs when a part of the wall of an artery (a type of blood vessel) becomes stretched and bulges out. You can get an aneurysm <a href="https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/aneurysm">in any blood vessel</a>, but they are most common in the brain’s arteries and the aorta, the large artery that leaves the heart. Many people can have a brain aneurysm and never know. But a brain (or aortic) aneurysm that ruptures and bursts can be fatal. So, what causes a brain aneurysm? And what’s the risk of rupture? <h2>Weakness in the artery wall</h2> Our arteries need strong walls because blood is constantly pumped through them and pushed against the walls. An <a href="https://www.healthdirect.gov.au/aneurysms">aneurysm</a> can develop if there is a weak part of an artery wall. The walls of arteries are made of three layers: an inner lining of cells, a middle layer of muscle and elastic fibres, and a tough outer layer of mostly collagen (a type of protein). Damage to any of these layers causes the wall to become thin and stretched. It can then balloon outward, leading to an aneurysm. <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC4399795/">Genetics</a> and <a href="https://www.ninds.nih.gov/health-information/disorders/cerebral-aneurysms">certain inherited disorders</a> can cause weak artery walls and brain aneurysms in some people. For all of us, our artery walls become weaker as we age, and brain aneurysms are more common as we get older. The <a href="https://www.ncbi.nlm.nih.gov/books/NBK557867/">average age for a brain aneurysm</a> to be detected is 50 (Sandilands is 53). Females have a higher risk of brain aneurysm than males <a href="https://www.ncbi.nlm.nih.gov/books/NBK507902/">after about age 50</a>. Declining oestrogen around menopause reduces the collagen in the artery wall, causing it to become weaker. <figure class="align-center "><img src="https://images.theconversation.com/files/646696/original/file-20250204-15-i55mtq.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/646696/original/file-20250204-15-i55mtq.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=400&fit=crop&dpr=1 600w, https://images.theconversation.com/files/646696/original/file-20250204-15-i55mtq.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=400&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/646696/original/file-20250204-15-i55mtq.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=400&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/646696/original/file-20250204-15-i55mtq.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=503&fit=crop&dpr=1 754w, https://images.theconversation.com/files/646696/original/file-20250204-15-i55mtq.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=503&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/646696/original/file-20250204-15-i55mtq.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=503&fit=crop&dpr=3 2262w" alt="An illustration showing a brain aneurysm." /><figcaption>A brain aneurysm occurs when a part of the wall of an artery balloons out. <a class="source" href="https://www.shutterstock.com/image-vector/human-brain-blocking-stroke-aneurysm-disease-2171173339">Alfmaler/Shutterstock</a></figcaption></figure> High blood pressure can increase the risk of a brain aneurysm. In someone with high blood pressure, blood inside the arteries is pushed against the walls with greater force. This can <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC3163429/">stretch and weaken the artery walls</a>. Another <a href="https://www.aihw.gov.au/reports/heart-stroke-vascular-diseases/hsvd-facts/contents/introduction">common condition</a> called atherosclerosis can also <a href="https://www.ninds.nih.gov/health-information/disorders/cerebral-arteriosclerosis">cause brain aneurysms</a>. In atherosclerosis, plaques made mostly of fat build up in arteries and stick to the artery walls. This directly damages the cell lining, and weakens the muscle and elastic fibres in the middle layer of the artery wall. <h2>Several lifestyle factors increase risk</h2> Anything that increases inflammation or causes atherosclerosis or high blood pressure in turn increases your risk of a brain aneurysm. <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC6527044/">Smoking and heavy drinking</a> affect all of these, and nicotine <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC6214667/">directly damages</a> the artery wall. Sandilands mentioned <a href="https://www.news.com.au/entertainment/tv/radio/kyle-sandilands-reveals-shock-health-diagnosis-i-may-be-dead/news-story/62f9f05c6f0a03702632ec8d622cf97a">his cocaine use</a> in discussing his diagnosis. He said: "The facts are, a life of cocaine abuse and partying are not the way to go." Indeed, cocaine abuse <a href="https://www.nhs.uk/conditions/brain-aneurysm/causes/">increases the risk of a brain aneurysm</a>. It causes very high blood pressure because it causes arteries to spasm and constrict. Cocaine use is also <a href="https://www.sciencedirect.com/science/article/abs/pii/S1878875023017400">linked to worse outcomes</a> if a brain aneurysm ruptures. <a href="https://onlinelibrary.wiley.com/doi/full/10.1111/ejn.15992">Stress</a> and a <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC6243058/#:%7E:text=High%2Dfat%20diets%20(HFDs),many%20organs%20(see%20text).">high-fat diet</a> also increase inflammation. <a href="https://www.hopkinsmedicine.org/health/conditions-and-diseases/atherosclerosis#:%7E:text=Atherosclerosis%20is%20thickening%20or%20hardening,activity%2C%20and%20eating%20saturated%20fats.">High cholesterol</a> can also cause atherosclerosis. And <a href="https://www.aihw.gov.au/reports/heart-stroke-vascular-diseases/hsvd-facts/contents/risk-factors/overweight-and-obesity">being overweight</a> increases your blood pressure. <a href="https://www.ahajournals.org/doi/10.1161/JAHA.121.022277">A study</a> of more than 60,000 people found smoking and high blood pressure were the strongest risk factors for a brain aneurysm. <h2>Is it always a medical emergency?</h2> About <a href="https://www.ncbi.nlm.nih.gov/books/NBK557867/">three in 100 people</a> will have a brain aneurysm, varying in size from <a href="https://www.ncbi.nlm.nih.gov/books/NBK557867/">less than 5mm to more than 25mm</a> in diameter. The majority are only discovered while undergoing imaging for something else (for example, head trauma), because small aneurysms may not cause any symptoms. Larger aneurysms can cause symptoms because they can <a href="https://www.mayoclinic.org/diseases-conditions/brain-aneurysm/symptoms-causes/syc-20361483">press against brain tissues and nerves</a>. Sandilands described “<a href="https://www.abc.net.au/news/2025-02-03/kyle-sandilands-brain-aneurysm-diagnosis/104888826">a lot of headache problems</a>” leading up to his diagnosis. Headaches can be due to <a href="https://www.mayoclinic.org/diseases-conditions/brain-aneurysm/symptoms-causes/syc-20361483">minor leaks of blood</a> from the aneurysm. They indicate a risk of the aneurysm rupturing in subsequent days or weeks. Less than <a href="https://www.nature.com/articles/s41467-024-46015-2">one in 100 brain aneurysms will rupture</a>, often called a “brain bleed”. This causes a <a href="https://www.hopkinsmedicine.org/health/conditions-and-diseases/subarachnoid-hemorrhage#:%7E:text=A%20subarachnoid%20hemorrhage%20is%20bleeding,brain%20and%20inside%20the%20skull.">subarachnoid haemorrhage</a>, which is a <a href="https://www.nhs.uk/conditions/subarachnoid-haemorrhage/">type of stroke</a>. If it does occur, rupture of a brain aneurysm is <a href="https://www.ncbi.nlm.nih.gov/books/NBK507902/">life-threatening</a>: nearly one in four people will die within 24 hours, and one in two within three months. If someone’s brain aneurysm ruptures, they usually experience a sudden, severe headache, often described as a “<a href="https://www.bafound.org/blog/three-signs-your-bad-headache-might-be-a-ruptured-brain-aneurysm/">thunderclap headache</a>”. They may also have <a href="https://www.ninds.nih.gov/health-information/disorders/cerebral-aneurysms">other symptoms of a stroke</a> such as changes in vision, loss of movement, nausea, vomiting and loss of consciousness. <h2>Surgery can prevent a rupture</h2> Whether surgery will be used to treat a brain aneurysm depends on its size and location, as well as the age and health of the patient. The medical team will balance the potential benefits with the risks of the surgery. A small aneurysm with low risk of rupture will usually <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC2323531/">just be monitored</a>. However, once a brain aneurysm reaches <a href="https://www.ncbi.nlm.nih.gov/books/NBK507902/">7mm or more</a>, surgery is generally needed. In <a href="https://www.nhs.uk/conditions/brain-aneurysm/treatment/#:%7E:text=A%20cut%20is%20made%20in,permanently%20clamped%20on%20the%20aneurysm.">surgery to repair a brain aneurysm</a>, the surgeon will temporarily remove a small part of the skull, then cut through the coverings of the brain to place a tiny metal clip to close off the bulging part of the aneurysm. Another option is <a href="https://www.hopkinsmedicine.org/health/treatment-tests-and-therapies/endovascular-coiling">endovascular</a> (meaning within the vessel) coiling. A surgeon can pass a catheter into the femoral artery in the thigh, through the aorta to the brain. They can then place a coil inside the aneurysm which forms a clot to close off the aneurysm sac. <a href="https://medlineplus.gov/ency/article/007372.htm">After either surgery</a>, usually the person will stay in hospital for up to a week. It can take <a href="https://www.healthline.com/health/brain-aneurysm-clipping-surgery#recovery">6–8 weeks</a> for full recovery, though doctors may continue monitoring with annual imaging tests for a few years afterwards. You can <a href="https://www.medicalnewstoday.com/articles/how-to-prevent-a-brain-aneurysm#prevention">lower your risk of a brain aneurysm</a> by not smoking, moderating alcohol intake, eating a healthy diet, exercising regularly and maintaining a healthy weight.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/248882/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/theresa-larkin-952095">Theresa Larkin</a>, Associate Professor of Medical Sciences, <a href="https://theconversation.com/institutions/university-of-wollongong-711">University of Wollongong</a> and <a href="https://theconversation.com/profiles/jessica-nealon-1481995">Jessica Nealon</a>, Senior Lecturer in Medical Sciences (Neuroscience), <a href="https://theconversation.com/institutions/university-of-wollongong-711">University of Wollongong</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/around-3-of-us-will-develop-a-brain-aneurysm-in-our-lives-so-what-is-it-and-how-do-you-treat-it-248882">original article</a>. </div>

Body

When news is stressful, how do you balance staying informed with ‘doomscrolling’?

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/lisa-harrison-1552123">Lisa Harrison</a>, <a href="https://theconversation.com/institutions/flinders-university-972">Flinders University</a> It all begins innocently – a late-night peek at your favourite social media site before bed. You catch a headline that grabs your attention with “breaking news” you can’t afford to miss. Like following digital breadcrumbs, one click leads to another. Before you know it, you’re tumbling down a rabbit hole of endless updates and emotionally charged social media posts. Two hours later, your shoulders are tense, your stomach is in knots, but you can’t put your phone down. This endless scrolling through bad news – known as “<a href="https://www.health.harvard.edu/mind-and-mood/doomscrolling-dangers">doomscrolling</a>” – sneaks up on us. It’s important to stay in touch with what’s happening in the world. Being informed helps us make better decisions, engage meaningfully in our communities, and respond effectively to changes that affect our lives and those around us. But just like a healthy diet, we must be smart about our news consumption to avoid it <a href="https://theconversation.com/doomscrolling-is-literally-bad-for-your-health-here-are-4-tips-to-help-you-stop-190059">taking a toll on our health</a>. The good news is there are proven ways to stay informed without letting it take over your life. Research shows <a href="https://academic.oup.com/poq/article/84/S1/332/5866766">setting clear boundaries</a> around your news consumption can make a huge difference. So, how can you strike the right balance? <h2>How to set boundaries with news consumption</h2> It’s worth considering why you feel compelled to stay constantly informed. Ask yourself: “will this information change what I can do about it?”. Often, we scroll not because the information is actionable, but because <a href="https://www.sciencedirect.com/science/article/pii/S245195882400071X">we are trying to gain a sense of control</a> in an uncertain world. Research shows scrolling through negative news <a href="https://www.abc.net.au/news/2024-08-29/negative-effects-doomscrolling-young-people-existential-anxiety/104268178">can disrupt your sleep and increase anxiety</a>. To make sure your media consumption is intentional, there are a few steps you can take. Be picky with the news sources you read. Choose a few trusted outlets instead of letting social media algorithms decide what you see. It’s like sticking to a balanced meal plan, but for your mind. While engaging with the news, pay close attention to how you’re feeling. When you notice physical signs of anxiety or emotional distress, that is your cue to take a break. Set aside time earlier in the day with clear boundaries around your news consumption: maybe with your morning coffee or during your lunch break, whatever works for your schedule. Consider implementing a “digital sunset”, too. This is a cut-off time for news and social media, ideally an hour or two before bedtime, to give your mind time to process what you have learned without disrupting your sleep. The world will always be there, but you will be in a better head space to process what is happening. <h2>You don’t have to feel helpless</h2> Taking breaks from consuming news is not burying your head in the sand – it’s practising self care. Studies have shown that <a href="https://www.apa.org/monitor/2022/11/strain-media-overload">people who set healthy boundaries</a> around news consumption are often better equipped to engage meaningfully on important issues and take constructive action when needed. When you check the news, be an active consumer. Instead of endless scrolling: <ul> <li> choose one or two in-depth articles to read thoroughly </li> <li> discuss the news with colleagues, friends and family to process your feelings </li> <li> look for solution-focused news stories that highlight positive change </li> <li> take meaningful action on issues you care about. </li> </ul> There are also various apps and tools that can help you form healthier digital habits. <a href="https://theconversation.com/cant-focus-addicted-to-your-online-world-theres-an-app-for-that-98951">Productivity apps</a> use various approaches to help you stay focused, providing ways to snap you out of mindless scrolling. News curation apps and apps that allow you to save articles to read later can help you establish a balanced news diet, and remove the urgent need to read everything immediately. Many smartphones now come equipped with <a href="https://theconversation.com/rethinking-screen-time-a-better-understanding-of-what-people-do-on-their-devices-is-key-to-digital-well-being-243644">screen time management</a> features, such as Apple’s Screen Time or Android’s Digital Wellbeing. You can use these to monitor your scrolling habits and to manage how much time you spend on social media or news apps. One useful feature is to block apps from use during certain times of day or after you’ve used them for a set amount of time. <h2>Stay mindful, stay engaged</h2> Staying informed doesn’t mean staying constantly connected. By mindfully setting boundaries and using supportive tools, you can keep up with important events while protecting your wellbeing. If you’re trying productivity apps and other tools, start small. Choose one tool that resonates with you rather than trying everything at once. Set realistic goals that fit your life, and use these apps’ insights to understand your habits better. Pay attention to what triggers your doomscrolling and adjust your settings accordingly. Remember, these tools work best when combined with offline activities you enjoy. The goal isn’t to disconnect completely, but to find a sustainable balance between staying informed and maintaining peace of mind. With thoughtful boundaries and the right support tools, you can stay engaged with the world while keeping your mental health intact.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/248017/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/lisa-harrison-1552123">Lisa Harrison</a>, Lecturer in Digital Communications, <a href="https://theconversation.com/institutions/flinders-university-972">Flinders University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/when-news-is-stressful-how-do-you-balance-staying-informed-with-doomscrolling-248017">original article</a>. </div>

Technology

From the Big Bogan to Larry the Lobster, why do towns build Big Things?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/amy-clarke-248726">Amy Clarke</a>, <a href="https://theconversation.com/institutions/university-of-the-sunshine-coast-1068">University of the Sunshine Coast</a> Big Things first appeared in Australia in the 1960s, beginning with the <a href="https://sahistoryhub.history.sa.gov.au/things/big-scotsman/">Big Scotsman</a> (1962) in Medindie, South Australia, the <a href="https://bigbanana.com">Big Banana</a> (1964) in Coffs Harbour, New South Wales, and the <a href="https://www.visitnsw.com/destinations/country-nsw/the-murray/tocumwal/attractions/big-murray-cod">Big Murray Cod</a> (1968) in Tocumwal, NSW. These structures were inspired by earlier North American examples, such as <a href="https://lucytheelephant.org">Lucy the Elephant</a> (1882) in New Jersey, and several <a href="https://www.laconservancy.org/learn/historic-places/randys-donuts/">big doughnuts in California</a>. While they differed in subject matter, all aimed to attract the attention of passing motorists: in the 1950s–1960s, private car ownership had soared and highway construction spread. Towns and regions across Australia, <a href="https://ourwayoflife.co.nz/11-iconic-big-thing-statues-around-new-zealand/">New Zealand</a> and North America used oversized landmarks to get travellers to stop, take a photo and hopefully spend money at local businesses. As awareness of these giant landmarks grew, so did the desire of other communities to have their own. Within a few decades, Australia’s Big Things had become a beloved fixture of road trips and summer holidays. <h2>A big cultural impact</h2> <a href="https://www.tandfonline.com/doi/full/10.1080/14443058.2022.2144928">My research</a> shows the number of Big Things being constructed in Australia hit an initial peak in the 1980s before experiencing a temporary decline. By the 2000s, however, towns as far afield as Tully in Queensland (<a href="https://www.australiantraveller.com/qld/big-gumboot/">Big Golden Gumboot</a>), Cressy in Tasmania (<a href="https://www.aussietowns.com.au/town/cressy-tas">Big Trout</a>), and Exmouth in Western Australia (<a href="https://www.exmouth.wa.gov.au/news/exmouths-iconic-and-much-loved-crustacean-is-back/358">Big Prawn</a>) were reviving the tradition. Soon, Big Things became firmly entrenched in Australian popular culture: featuring on limited edition <a href="https://www.couriermail.com.au/news/queensland/sunshine-coast/redheads-pay-homage-to-icons/news-story/219026f222830073f4db107759e1145c">Redheads matchboxes</a> (2010), and on sets of <a href="https://australiapostcollectables.com.au/stamp-issues/aussie-big-things">Australia Post stamps </a>(2007 and 2023). But some of the older structures experienced declining popularity: the Big Wool Bales in Hamilton, Victoria (closed 2020), Victoria’s Giant Gippsland Earth Worm in Bass (closed 2020) and the Big Cask Wine in Mourquong, NSW (closed 2012), survive only in holiday photos and people’s memories. Icons like Larry the Lobster (Kingston, SA), the Big Prawn (Ballina, NSW), and the Big Pineapple (Nambour, Queensland) have battled <a href="https://www.nytimes.com/2018/08/30/world/australia/larry-lobster-big-things-sale.html">changes in ownership</a>, <a href="https://www.abc.net.au/news/2009-09-24/council-votes-to-sink-big-prawn/1441452">threat of demolition</a>, and <a href="https://www.theguardian.com/australia-news/article/2024/aug/24/big-pineapple-reopen-queensland-woombye-history">closure</a>. Despite these challenges, and debates over heritage conservation, construction of these giant landmarks has not slowed. <a href="https://www.visitnsw.com/destinations/outback-nsw/cobar-area/nyngan/attractions/big-bogan">The Big Bogan</a> was erected in 2015 in Nyngan, NSW, by community members who were eager to encourage visitors to the area. A local progress association in the small town of Thallon in Queensland unveiled William the <a href="https://www.stgeorgeregion.com.au/listing/william-the-wombat/">Big Wombat</a> in 2018, also with the aim to bring attention to the area. Similar hopes were held for the <a href="https://www.queensland.com/au/en/things-to-do/attractions/p-5f72991d4390bc7c02ab8547-the-big-melon">Big Watermelon</a> erected in 2018 (Chinchilla, Queensland), and the Big Tractor (Carnamah, WA) <a href="https://www.abc.net.au/news/2024-10-05/midwest-wa-town-carnamah-unveils-worlds-biggest-tractor/104388496">which opened this year</a>. Through my research, I spoke with many people involved with projects such as these, and they said they’d selected objects that were iconic to their area. This could be a product they specialise in, a local native animal, or, in the case of the Big Bogan, a joke based on the name of nearby Bogan River. Most builders openly acknowledge their primary motivation is to promote the region, attract tourist dollars and investment, and revive towns that have seen better days. But do Big Things actually achieve these goals? Unfortunately, there is no easy answer. <h2>An economic return?</h2> Local economies are complex, as are the reasons people choose to visit. Many Big Things are constructed on the sides of highways that connect Australia’s numerous regional towns. People who stop for photos may not set out with the goal of visiting that Big Thing – it may simply be convenient to take a break there while on the way somewhere else. And if people do stop, it doesn’t guarantee they will spend more than the cost of filling up their car with petrol, if that. Over the years, tourism researchers have developed <a href="https://www.sciencedirect.com/science/article/abs/pii/S1447677021000322">several different models </a>for calculating the impact of rural and regional tourism on local economies. However, none of these approaches has proven to be universally effective. Most scholars agree tourists aren’t likely to travel long distances <a href="https://www.tandfonline.com/doi/abs/10.1080/21568316.2019.1673811">for any one reason</a>. They will consider a range of factors including food and accommodation, and the closeness of numerous attractions. In other words: building a Big Thing won’t guarantee a sustained increase in tourism to the area on its own. Communities should factor this in when considering erection of a Big Thing, especially given the cost of construction. The Big Mango in Bowen <a href="http://www.atlasobscura.com/places/the-big-mango">reportedly cost $A90,000</a> when it was built in 2002, while the organisers of the Big Tractor in Carnamah <a href="https://www.abc.net.au/news/2024-10-05/midwest-wa-town-carnamah-unveils-worlds-biggest-tractor/104388496">raised more than $600,000</a> to cover its price tag. The spread of social media and easy access to media outlets via the internet offers communities another reason to build Big Things, however. Australians are not the only ones fascinated by Big Things, and when a new one is unveiled — or an existing one goes “missing”, as <a href="https://www.bbc.com/news/newsbeat-26324023">the Big Mango did in 2014</a> — it is often covered by the press and then shared online. These giant landmarks are also highly “Instagrammable”: <a href="https://www.dailymail.co.uk/news/article-3039474/The-20-hottest-Australian-attractions-Instagram-revealed-spectacular-Sydney-Opera-House-Twelve-Apostles-don-t-forget-Big-Banana.html">a 2015 survey</a> revealed that six of Australia’s 20 most Instagrammed tourist attractions were Big Things. This sort of coverage doesn’t necessarily guarantee the long-term revival of a town’s economy. But it can help to remind people of the town’s existence, and it gives locals a memorable image on which to build.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/241129/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/amy-clarke-248726">Amy Clarke</a>, Senior Lecturer in History, specialising in built heritage and material culture, <a href="https://theconversation.com/institutions/university-of-the-sunshine-coast-1068">University of the Sunshine Coast</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/from-the-big-bogan-to-larry-the-lobster-why-do-towns-build-big-things-241129">original article</a>. </div>

Domestic Travel

How do mosquito repellents work? A chemistry expert explains

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/daniel-eldridge-1494633">Daniel Eldridge</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> It’s summertime, and for many of us that means plenty of time outside – and, unfortunately, mosquitoes. The combination of the <a href="https://theconversation.com/why-your-summer-might-be-full-of-mosquitoes-according-to-a-scientist-98369">increase in temperature and plenty of water</a> is ideal for these blood-sucking insects to make their presence felt. In the best-case scenario, they are a pest, delivering a highly unpleasant sting. At the other end of the spectrum, they are vectors for diseases responsible for <a href="https://www.cdc.gov/global-health/impact/fighting-the-worlds-deadliest-animal.html">more human fatalities than any other animal on Earth</a>. To keep them at bay, many of us will reach for the bottle of insect repellent or citronella candles in order to avoid the bite and incessant itching that comes with it. But how do these repellents actually work? <h2>A complex interplay</h2> <a href="https://www.mcgill.ca/oss/article/health-technology/why-mosquitos-bite-you-and-how-make-them-stop">A great deal</a> of research has gone into understanding how and why female mosquitoes – they are the ones that bite us – are attracted to people. There is evidence showing they are attracted to the <a href="https://www.nih.gov/news-events/nih-research-matters/how-mosquitoes-detect-people">carbon dioxide</a> we exhale, lactic acid found in our sweat, and a variety of other <a href="https://pubmed.ncbi.nlm.nih.gov/24315103/">skin odours</a> and <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC6482070/">volatile compounds</a> we give off. The interplay between all these factors is quite <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC8906108/">complex</a>. To ward off mosquitoes, physical barriers such as netting make for the best protection. However, while you might put netting around a backdoor patio and barbecue, doing this for any large space is simply not practical. This is where repellents come in. <h2>DEETerrent</h2> There are a variety of mosquito repellents available. The most tried-and-true products are based on a substance called N,N-diethyl-meta-toluamide, more commonly referred to as DEET. This molecule has been commercially available since 1957, <a href="https://www.usda.gov/media/blog/2018/05/17/protecting-military-flying-foes">after the United States military discovered</a> it was an effective insect repellent. DEET is often used as a <a href="https://www.consumerreports.org/health/insect-repellent/how-safe-is-deet-insect-repellent-safety-a4952100929/">point of comparison</a> for <a href="https://www.nejm.org/doi/full/10.1056/NEJMoa011699">studies</a> investigating alternatives. <a href="https://scijournals.onlinelibrary.wiley.com/doi/full/10.1002/ps.5476?casa_token=prUg_pX7fjAAAAAA%3AuEKT5PGXWU1mO4fakwQ9NSEY-0uVYBEz25zWxXjMOp5AxX5UFWENJc1UF_JdsKA45x3sSHpmJSLJSwM">Studies show that</a>, provided they are used according to direction, <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC4041896/">DEET products are safe and effective</a>. For example, it is recommended that when required, <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC9458079/">sunscreen is applied</a> before the repellent. DEET products are not recommended for infants. The exact mechanism by which DEET repels mosquitoes and other insects is <a href="https://www.tandfonline.com/doi/full/10.1080/19336934.2015.1079360#d1e132">still explored</a> <a href="https://link.springer.com/article/10.1007/s13258-020-00991-z">today</a>. Many studies link its success to mosquitoes having receptors that sense the presence of DEET, deterring them from closely approaching our skin. Some investigations suggest that when DEET is detected, it <a href="https://pubmed.ncbi.nlm.nih.gov/18339904/">inhibits mosquitoes’ attraction</a> to us, while others show evidence that mosquitoes “<a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC2518096/pdf/zpq13598.pdf">smell and avoid</a>” DEET. There are also numerous reports demonstrating mosquitoes don’t bite when they <a href="https://www.cell.com/current-biology/pdfExtended/S0960-9822(19)30402-6">land on</a> DEET-treated skin. This is because DEET acts as a contact-based repellent and conveys a chemical message to mosquitoes to leave. <a href="https://www.tandfonline.com/doi/full/10.1080/19336934.2015.1079360">Studies</a> <a href="https://www.cell.com/current-biology/pdfExtended/S0960-9822(19)30402-6">suggest</a> that DEET likely works through a combination of the processes described here. <h2>Effective alternatives</h2> Another more recent family of mosquito repellent products rely on an active ingredient called picaridin (or icaridin). The current consensus is that picaridin products are safe, and highly effective. For many, they are considered appealing as they <a href="https://www.sciencedirect.com/science/article/pii/S0190962207014673?casa_token=zzPMhkW9QtIAAAAA:Euk6hjWnuiem6OAq020Xv0Pu70K7LfN_siLGcK1DIyOZn-mbH7U9tKK115rAK0rYbWQ2oaMGfg#bib49">don’t have as strong a scent</a> as DEET. Picaridin products have been reported to be <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC4270489/">equally effective</a> as DEET, or in some cases, even <a href="https://academic.oup.com/jtm/article/25/suppl_1/S10/4990399">slightly superior</a>, though the outcome depends on their concentration too. The other repellent regularly reported as being effective is para-menthane-3,8-diol (PMD). This is produced by chemical treatment of <a href="https://www.phrp.com.au/issues/december-2016-volume-26-issue-5/a-review-of-recommendations-on-the-safe-and-effective-use-of-topical-mosquito-repellents/">oil of lemon eucalyptus</a>. Untreated, this oil isn’t effective at repelling mosquitoes. However, <a href="https://onlinelibrary.wiley.com/doi/10.1002/(SICI)1099-1573(199606)10:4%3C313::AID-PTR854%3E3.0.CO;2-O">several</a> <a href="https://journals.sagepub.com/doi/full/10.1016/j.wem.2015.11.007">studies</a> have shown that PMD is an effective mosquito repellent. The ability of these repellents to deter mosquitoes is <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC4270489/">dose</a> <a href="https://academic.oup.com/jtm/article/25/suppl_1/S10/4990399">dependent</a>. In all cases, it’s important that an appropriate dose is applied, with re-application sometimes required to keep protection to a maximum. The performance of these products varies according to many other variables too, including <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC4270489/">the species of mosquito</a>. <h2>What about citronella?</h2> Citronella products, including candles and topical formulations, are popular choices for keeping mosquitoes away. However, in systematic testing, these <a href="https://onlinelibrary.wiley.com/doi/10.1155/2015/361021">have been shown</a> to be <a href="https://www.nejm.org/doi/full/10.1056/NEJMoa011699">far less effective</a> than DEET. Studies have also shown that <a href="https://academic.oup.com/jinsectscience/article/17/1/24/2996380?login=false">citronella candles don’t</a> <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC4617422/">fend off mosquitoes</a> <a href="https://pubmed.ncbi.nlm.nih.gov/8827606/">as much</a> as you might like. There are many other repellent products on the market. Given the widespread interest in preventing mosquito bites, natural remedies abound. It’s important to recognise that natural <a href="https://academic.oup.com/jinsectscience/article/17/1/24/2996380?login=false">isn’t necessarily more effective</a> and it <a href="https://theconversation.com/what-does-a-chemical-do-addressing-misconceptions-about-chemistry-104085">isn’t necessarily safer</a>. In <a href="https://www.nejm.org/doi/full/10.1056/NEJMoa011699">most reported studies</a>, DEET and picaridin are reported as having the greatest duration of protection (of the order of hours) and greatest effect on the mosquitoes. They are more thoroughly tested than many alternatives. When others are tested, they are often found wanting. One study described sound-based devices as being the repellent equivalent of <a href="https://academic.oup.com/jinsectscience/article/17/1/24/2996380?login=false">snake oil</a>. And although repellent bracelets contain working ingredients, they are largely ineffective in that form. This is because of insufficient concentrations of the active ingredient being “emitted”. When it comes to preventing disease transmission via mosquitoes, the <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC4041896/">benefits</a> of the proven repellents far outweigh the risks.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/244403/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/daniel-eldridge-1494633">Daniel Eldridge</a>, Senior Lecturer in Chemistry, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/how-do-mosquito-repellents-work-a-chemistry-expert-explains-244403">original article</a>. </div>

Body

Readers response: Which discontinued fast food item do you want to come back?

We asked our reader what discontinued food item they would love to see make a comeback. Here's what they said. Lillian Mary Brand - KFC had this wicked bean salad back in the 80's!!! Loved it!! Ellen Kuchel - Lattice Biscuits and Polly Waffles. Phill Johnston - All you can eat at Pizza Hut. Bruce Hopkins - Henny Penny Chicken. Sharyn Wood - KFC in the late 60s early 70s had the most amazing gravy I have ever tasted. A pot of the gravy with their bread rolls was a very cheap meal! Herman Zirkzee - Real milkshakes in metal containers with ice cream and malt. Maureen Whale - Georgie Pie. Robyn Joy Davis - Potato skins from Sizzlers. Christine Murphy - Scrambled eggs and big breakfast from Macca's. Julia Haffenden - Hungry Jack's hotdog and Yumbos. Image credits: Shutterstock

Food & Wine

Top 10 must-do activities around the world in 2025

Global travel brand Time Out has revealed their annual list of the best activities around the world. From a canoe trip in Australia to wildlife encounters in Singapore, here are the top 10 must-do activities and experiences around the world. 10. Take a micro cruise through the Arctic. This year, Micro-cruise specialist Secret Atlas will be taking 12 passengers at a time through the Arctic, for a more "intimate, once-in-a-lifetime, eco-conscious trip". The cruise will take guests on a wildlife-spotting journey through Svalbard's lesser-known northern reaches, while the other cruise will sail past the icebergs in Northeast Greenland, including a visit to one of the most remote towns on earth. These trips, however, aren't cheap with prices starting at £15,500 (around AUD $30,500) for two weeks. 9. Explore the cross-border towns of Gorizia, Italy, and Nova Gorica, Slovenia These three towns make up 2025's European Capital of Culture, with over 400 events to be held throughout the year, including a piano performance on a 200m-high bridge, as well as a food and wine event called Tastes Without Borders. 8. Go on a wildlife-spotting adventure in Singapore's new Rainforest Park The Mandai Wildlife Reserve is opening its fifth zoological park, Rainforest Wild Asia, this year, with 10 different zones, as well as 29 different species of animals, perfect for a family outing. 7. Discover Vietnam by a vintage steam train Time Out explained that two of the "beautifully restored vintage trains" date all the way back to the 60s, and will take passengers between "the central city of Da Nang and the former royal capital of Hue." 6. Visit the Musée Granet celebrating the father of post-impressionism Aix-en-Provence in France is celebrating the life of post-impressionist painter Paul Cezanne in his hometown, with the exhibition displaying almost 100 of Cèzanne’s works, as well as tours around the artist’s childhood home, former estate and art studio. 5. Visit the long-awaited Harlem's Studio Museum, New York The Studio Museum in Harlem, New York, was first opened 56 years ago, with an archive of almost 9,000 pieces from all kinds of creators. It was closed for construction almost seven years ago and will finally re-open in autumn. 4. Fly directly to Greenland The grand opening of their brand-new international airport will make this stunning location more accessible for travellers wanting to view the Northern Lights and all of the territory's natural wonders. 3. Visit the world's first museum telling stories of migration though art The Fenix museum in Katendrecht, Rotterdam will open on May 16 and is the first museum telling stories of migration through art. 2. Walk, ride or cycle along Murray River, Australia "The Murray River is the crowning jewel of Australia’s Echuca region," said Time Out’s Saffron Swire. With the opening of a new multisport adventure trail this year, cyclists, hikers and paddlers alike will get to enjoy the river in a new way. 1. Join a once-every-quarter-century spiritual celebration in Rome, Italy Italy's capital will celebrate its spiritual Jubilee this year, a Catholic festivity that's held every 25 years, with Italy expert Rebecca Ann Hughes recommending the Seven Churches Pilgrimage, "which began in the 16th century and involves a 25km walk through the city and countryside between the major basilicas." Check out the full list <a href="http://www.timeout.com/things-to-do/best-things-to-do-in-the-world" target="_blank" rel="noopener">here</a>. Image: Shutterstock

International Travel

Why do some people’s hair and nails grow quicker than mine?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/michelle-moscova-310728">Michelle Moscova</a>, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> Throughout recorded history, our hair and nails played an important role in signifying who <a href="https://www.psychiatrictimes.com/view/gender-culture-and-social-constructs-in-body-focused-repetitive-behaviors">we are and our social status</a>. You could say, they separate the caveman from businessman. It was no surprise then that many of us found a new level of appreciation for our hairdressers and nail artists during the COVID lockdowns. Even Taylor Swift reported <a href="https://abcnews.go.com/GMA/Culture/taylor-swift-reveals-shes-cutting-hair-covid-19/story?id=74757540&t">she cut her own hair during lockdown</a>. So, what would happen if all this hair and nail grooming got too much for us and we decided to give it all up. Would our hair and nails just keep on growing? The answer is yes. The hair on our head grows, on average, <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC9917549/">1 centimeter per month</a>, while our fingernails grow an average of just <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC11436330/">over 3 millimetres</a>. When left unchecked, our hair and nails can grow to impressive lengths. Aliia Nasyrova, known as the Ukrainian Rapunzel, holds the world record for the longest locks on a living woman, which measure an <a href="https://www.youtube.com/watch?v=1TdlEIQdVwo&t=81s">impressive 257.33 cm</a>. When it comes to record-breaking fingernails, Diana Armstrong from the United States holds that record <a href="https://www.youtube.com/watch?v=nwql937j-7Q">at 1,306.58 cm</a>. Most of us, however, get regular haircuts and trim our nails – some with greater frequency than others. So why do some people’s hair and nails grow more quickly? <h2>Remind me, what are they made out of?</h2> Hair and nails are made mostly from keratin. Both grow from matrix cells below the skin and grow through different patterns of cell division. Nails grow steadily from the matrix cells, which sit under the skin at the base of the nail. These cells divide, pushing the older cells forward. As they grow, <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC5383514/">the new cells slide</a> along the nail bed – the flat area under the fingernail which looks pink because of its rich blood supply. A hair also starts growing from the matrix cells, eventually forming the visible part of the hair – the shaft. The hair shaft grows from a root that sits under the skin and is wrapped in a sac known as the hair follicle. This sac has a nerve supply (which is why it hurts to pull out a hair), oil-producing glands that lubricate the hair and a tiny muscle that <a href="https://www.ncbi.nlm.nih.gov/books/NBK546248/">makes your hair stand up</a> when it’s cold. At the follicle’s base is the hair bulb, which contains the all-important hair papilla that supplies blood to the follicle. Matrix cells near the papilla divide to produce new hair cells, which then harden and form the hair shaft. As the new hair cells are made, the hair is pushed up above the skin <a href="https://www.jidonline.org/article/S0022-202X(15)41553-2/fulltext">and the hair grows</a>. But the papilla also plays an integral part in regulating hair growth cycles, as it sends signals to the stem cells to move to the base of the follicle and form a hair matrix. Matrix cells then get signals to divide and start a new growth phase. <h2>Unlike nails, our hair grows in cycles</h2> Scientists have identified <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC9917549/">four phases of hair growth</a>, the: <ol> <li> anagen or growth phase, which lasts between two and eight years </li> <li> catagen or transition phase, when growth slows down, lasting around two weeks </li> <li> telogen or resting phase, when there is no growth at all. This usually lasts two to three months </li> <li> exogen or shedding phase, when the hair falls out and is replaced by the new hair growing from the same follicle. This starts the process all over again. </li> </ol> <figure class="align-center "><img src="https://images.theconversation.com/files/637402/original/file-20241210-15-gtv259.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/637402/original/file-20241210-15-gtv259.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=308&fit=crop&dpr=1 600w, https://images.theconversation.com/files/637402/original/file-20241210-15-gtv259.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=308&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/637402/original/file-20241210-15-gtv259.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=308&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/637402/original/file-20241210-15-gtv259.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=387&fit=crop&dpr=1 754w, https://images.theconversation.com/files/637402/original/file-20241210-15-gtv259.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=387&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/637402/original/file-20241210-15-gtv259.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=387&fit=crop&dpr=3 2262w" alt="Stages of hair growth graphic" /><figcaption>Hair follicles enter these phases at different times so we’re not left bald. <a class="source" href="https://www.shutterstock.com/image-vector/stages-hair-growth-cycle-vector-isolated-2433656865">Mosterpiece/Shutterstock</a></figcaption></figure> Each follicle goes through this cycle <a href="https://www.longdom.org/open-access/a-note-on-the-human-hair-follicle-from-the-origin-to-the-death-93871.html?t">10–30 times in its lifespan</a>. If all of our hair follicles grew at the same rate and entered the same phases simultaneously, there would be times when we would all be bald. That doesn’t usually happen: at any given time, only one in ten hairs is in the resting phase. While we lose about <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC9917549/">100–150 hairs daily</a>, the average person has <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC9917549/">100,000 hairs</a> on their head, so we barely notice this natural shedding. <h2>So what affects the speed of growth?</h2> Genetics is the most significant factor. While hair growth rates vary between individuals, they tend to be <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC4201279/">consistent among family members</a>. Nails are also influenced by genetics, as siblings, especially identical twins, tend to have <a href="https://link.springer.com/referenceworkentry/10.1007/978-3-319-26594-0_121-1">similar nail growth rates</a>. But there are also other influences. <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC9917549/">Age makes a difference</a> to hair and <a href="https://link.springer.com/referenceworkentry/10.1007/978-3-319-26594-0_121-1">nail</a> growth, even in healthy people. Younger people generally have faster growth rates because of the slowing metabolism and cell division that comes with ageing. <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC7432488/">Hormonal changes</a> can have an impact. Pregnancy often <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC7432488/">accelerates</a> hair and nail growth rates, while menopause and high levels of the stress hormone cortisol can <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC7432488/">slow growth rates</a>. Nutrition also changes <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC6380979/">hair</a> and <a href="https://ijdvl.com/nails-in-nutritional-deficiencies/?t">nail</a> strength and growth rate. While hair and nails are made mostly of keratin, they also contain water, fats and various minerals. As hair and nails keep growing, these minerals need to be replaced. That’s why a balanced diet that includes sufficient nutrients to support your hair and nails is essential for maintaining their health. Nutrient deficiencies may contribute to hair loss and nail breakage by disrupting their growth cycle or weakening their structure. Iron and zinc deficiencies, for example, have both been linked to <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC6380979/">hair loss</a> and <a href="https://ijdvl.com/nails-in-nutritional-deficiencies/?t">brittle nails</a>. This may explain why thick hair and strong, well-groomed nails have long been associated with perception of good health and high status. However, not all perceptions are true. <h2>No, hair and nails don’t grow after death</h2> A persistent myth that may relate to <a href="https://www.britannica.com/topic/vampire">the legends of vampires</a> is that hair and nails continue to grow after we die. In reality, they only appear to do so. As the body dehydrates after death, the skin shrinks, making hair and nails <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC2151163/">seem longer</a>. Morticians are well aware of this phenomenon and some <a href="https://www.adomonline.com/mortuary-man-reveals-how-he-handles-nails-of-the-dead/?t">inject tissue filler</a> into the deceased’s fingertips to minimise this effect. So, it seems that living or dead, there is no escape from the never-ending task of caring for our hair and nails.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/241556/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/michelle-moscova-310728">Michelle Moscova</a>, Adjunct Associate Professor, Anatomy, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/why-do-some-peoples-hair-and-nails-grow-quicker-than-mine-241556">original article</a>. </div>

Body

Do natural fabrics really keep us cooler in summer? Here’s the science

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/nisa-salim-1442233">Nisa Salim</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> The Bureau of Meteorology has warned Australia is facing one of the <a href="https://www.abc.net.au/news/2024-10-12/australia-facing-one-of-hottest-summers-on-record-bom/104464014">hottest summers on record</a>. As the weather warms, many of us reach for light-coloured clothes in natural fabrics, such as cotton and linen. But why are natural fabrics like these so much better at keeping us cool when the weather is hot? Here’s what the science says. <h2>Natural fabrics and sweat: a match made in heaven</h2> In hot weather, we sweat. As sweat evaporates, it carries heat away, which helps cool the body down. In hot weather, then, we want clothes that help take moisture away from the body as efficiently as possible. Natural fabrics are made using fibres extracted from plant- or animal-based sources such as cotton, linen, hemp, wool and silk. The primary component of all plant-based fibres is cellulose. Animal-based fibres are made up of proteins such as keratin and silk fibroin. Cellulose molecules are rich in compounds called hydroxyl groups that attract water and moisture. In scientific terms, they are hydrophilic – they love water. So, clothing made of cotton and linen is highly hydrophilic. It tends to absorb moisture and disperse it across the fabric, allowing it to evaporate more easily. This takes the sweat away quickly, making it more comfortable and breathable and allowing us to stay cool in sweltering temperatures. One downside of the natural fabrics is they wrinkle quickly (some people, of course, like that look). And on a really hot, sweaty day, natural fabrics can get heavy and wet. Animal fibres are basically proteins, and their properties vary depending on the source. Wool has been bio-engineered over millions of years to be comfortable to wear. Wool fibres are hydrophilic on the inside and hydrophobic on the outside, meaning they’re both water resistant and good at wicking moisture away. On the other hand, silk fabrics are very good at helping regulate temperature; they keep us cool in hot weather and warm in cold weather. <h2>Synthetic fabrics: less wrinkly, more sweaty</h2> Synthetic fabrics, on the other hand, are lighter and tend to wrinkle less. Common synthetic fabrics (such as polyester, nylon and acrylic) are all made from petroleum-based chemicals. Most synthetic fibres are made of long chains of hydrogen and carbon atoms and do not contain the hydroxyl groups we discussed earlier. Such fibres are therefore hydrophobic – they hate water. This means the water can’t spread evenly across the fabric and evaporate easily. They trap sweat against the skin, making the clothes less breathable and comfortable when the weather is warm and humid. However, some synthetic fabrics used in certain types of active wear can wick sweat away from body. And some semi-synthetic fabrics such as rayon or tencel (which are made from wood pulp or cotton with synthetic fibres) are more breathable than other synthetic fabrics such as polyester or nylon. <h2>Fabric weave makes a difference, too</h2> The colour of the clothing is also a contributing factor to keep you cool during summer. Light colours reflect sunlight away from you and help to keep the body cooler. There is some evidence dark colours absorb the <a href="https://www.sciencedirect.com/science/article/pii/S2214157X23012054">sunlight and associated heat</a>, making the surface of the skin warmer than normal. Another factor affecting breathability and comfort of clothing is the way the fabrics are woven. Fabrics that are loosely woven (sometimes known as “open weave”) with thinner materials naturally have more airflow, which helps you keep cool. For a quick, non-scientific test, hold a fabric up and see how much light passes through it. The more light you can see, the more breathable it likely is. The way the fabric is treated can play a role, too; such as for softening and wrinkle resistance. Using a fabric softener when you do a load of laundry usually doesn’t affect fabric breathability; softeners modify the surface of the fabric but don’t change the internal structure or porous nature of the fabrics. Wrinkle resistance is the ability of the fabric to stay smooth and polished even after washing. Synthetic fabrics are inherently wrinkle resistant. Natural fibres are more prone to wrinkles but can be chemically treated on the fabric surface during manufacturing to make them wrinkle resistant. Such treatments, however, may form layers on top of the fabric blocking the airflow, leading them to be less breathable.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/240909/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/nisa-salim-1442233">Nisa Salim</a>, Senior Lecturer at the School of Engineering, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/do-natural-fabrics-really-keep-us-cooler-in-summer-heres-the-science-240909">original article</a>. </div>

Beauty & Style

Why the holiday season can be triggering - and what to do to protect yourself

The Christmas rush is on, with people buzzing around purchasing gifts, seeing family and friends, and planning a joy-filled annual catch up. But for many, this time of year can be difficult. Holiday traditions tend to revolve around family and sometimes those relationships can bring their own challenges. It may be tempting to want to hit the fast forward button and skip through Christmas altogether. The festive season can be isolating for some people, but if you are also navigating emotions like grief it can feel overwhelming and be a harsh reminder of what has been lost, whether in recent times or even years ago. There’s an expectation from society that Christmas should be about having fun and being happy, yet if you’re grieving you may be feeling the weight of heavy emotions. It’s also hard for friends and family who want to help, but who may feel awkward and be unsure of what to say. Planning ahead can help make this holiday season feel more bearable. Start by setting specific boundaries on what you are prepared to do (or not do) this holiday season. What you will attend or not attend, and what feels right for you, right now. Acknowledge your grief and make space for it. All emotions and feelings are valid at this time of the year. Practice gentle self-compassion and don’t be tempted to over-commit to activities and events. Instead, take pressure off by setting realistic expectations that allow you the time and space to ride the waves of emotion as they appear. It’s also okay to re-evaluate your holiday traditions. Maybe consider adapting existing traditions and adding new and comforting rituals that are meaningful at this time. This doesn’t have to represent permanent change, adapting this year’s plans for this year’s emotions makes perfect sense. If it feels right, take time to commemorate. Fondly remember loved ones through activities such as lighting a special candle, playing their favourite song, creating a memorial ornament, cooking a much-loved family recipe or creating a memory box of photos and stories. Most importantly, remember that you are not alone. Reach out for assistance whenever you need it by connecting regularly with trusted friends and family, and consider getting some professional grief support as you navigate the holidays. As the rest of us rush toward the end of the year, let’s pause for a moment to think of others who may have an empty seat at the Christmas table. If you know someone who might be grieving these holidays, reach out regularly and check in. A call or even a text message can help people feel more seen and can make all the difference as they navigate this holiday season. This article was written by Bare Counsellor Carolyn Ganzevoort, who is an experienced bereavement professional. Image credits: Shutterstock

Mind

How much do you need to retire? It’s probably a lot less than you think

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/brendan-coates-154644">Brendan Coates</a>, <a href="https://theconversation.com/institutions/grattan-institute-1168">Grattan Institute</a> and <a href="https://theconversation.com/profiles/joey-moloney-1334959">Joey Moloney</a>, <a href="https://theconversation.com/institutions/grattan-institute-1168">Grattan Institute</a> How much do you need to save for a comfortable retirement? It’s a big question, and you’ll often hear <a href="https://www.google.com/search?q=australians+not+saving+enough+for+retirement&oq=australians+not+saving+enough+for+retirement&gs_lcrp=EgZjaHJvbWUyBggAEEUYOdIBCDM4MjRqMGo3qAIAsAIA&sourceid=chrome&ie=UTF-8">dire warnings</a> you don’t have enough. But for most Australians, it’s a lot less than you might think. <h2>You spend less in retirement</h2> Australians tend to overestimate how much they need in retirement. Retirees don’t have work-related expenses and have more time to do things for themselves. And retirees, especially pensioners, benefit from discounts on council rates, electricity, medicines, and other benefits worth thousands of dollars a year. While housing <a href="https://grattan.edu.au/news/the-great-australian-nightmare/">is becoming less affordable</a>, most retirees own their own home and have paid it off by the time they retire. Australians who own their home spend an average of 20–25% of their income on housing while working, largely to pay the mortgage. But that falls to just 5% among retiree homeowners, because they are just left with smaller things such as rates and insurance. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/631962/original/file-20241114-15-9h1dzt.png?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/631962/original/file-20241114-15-9h1dzt.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/631962/original/file-20241114-15-9h1dzt.png?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=337&fit=crop&dpr=1 600w, https://images.theconversation.com/files/631962/original/file-20241114-15-9h1dzt.png?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=337&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/631962/original/file-20241114-15-9h1dzt.png?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=337&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/631962/original/file-20241114-15-9h1dzt.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=424&fit=crop&dpr=1 754w, https://images.theconversation.com/files/631962/original/file-20241114-15-9h1dzt.png?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=424&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/631962/original/file-20241114-15-9h1dzt.png?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=424&fit=crop&dpr=3 2262w" alt="Notes: Housing costs include mortgage interest and principal repayments and general rates for homeowners, and rental payments for renters. Does not include imputed rent.:" /></a><figcaption>Notes: Housing costs include mortgage interest and principal repayments and general rates for homeowners, and rental payments for renters. Does not include imputed rent. Grattan analysis of ABS (2022) Survey of Income and Housing.</figcaption></figure> And whatever the income you need at the start of your retirement, it typically falls as you age. Retirees tend to spend 15–20% less at age 90 <a href="https://theconversation.com/why-we-should-worry-less-about-retirement-and-leave-super-at-9-5-106237">than they do at age 70</a>, after adjusting for inflation, as their health deteriorates and their discretionary spending falls. Most of their health and aged-care costs <a href="https://grattan.edu.au/report/money-in-retirement/">are covered by government</a>. <h2>So how much superannuation do you need?</h2> Consumer group Super Consumers Australia has crunched the numbers on retiree spending and presents three robust “<a href="https://superconsumers.com.au/journalism/how-much-do-you-need-to-save-for-your-retirement/">budget standards</a>”: <ul> <li>a “low” standard (that is, enough for a person who wants to spend more than what 30% of retirees do)</li> <li>a “medium” standard (spending more than 50% of retirees do), and</li> <li>a “high” standard (more than 70%).</li> </ul> <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/631963/original/file-20241114-19-9h1dzt.png?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/631963/original/file-20241114-19-9h1dzt.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/631963/original/file-20241114-19-9h1dzt.png?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=337&fit=crop&dpr=1 600w, https://images.theconversation.com/files/631963/original/file-20241114-19-9h1dzt.png?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=337&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/631963/original/file-20241114-19-9h1dzt.png?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=337&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/631963/original/file-20241114-19-9h1dzt.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=424&fit=crop&dpr=1 754w, https://images.theconversation.com/files/631963/original/file-20241114-19-9h1dzt.png?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=424&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/631963/original/file-20241114-19-9h1dzt.png?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=424&fit=crop&dpr=3 2262w" alt="" /></a><figcaption>How much super do you need? Super Consumers Australia (2023) Retirement Savings Targets</figcaption></figure> Crucially, these estimates account for the significant role of the <a href="https://www.servicesaustralia.gov.au/how-much-age-pension-you-can-get?context=22526">Age Pension</a> in the retirement income of many Australians. The <a href="https://www.servicesaustralia.gov.au/how-much-age-pension-you-can-get?context=22526">maximum Age Pension</a> is now A$30,000 a year for singles, and $45,000 a year for couples. To meet Super Consumers Australia’s “medium” retirement standard, a single homeowner needs to have saved only $279,000 in super by age 65 to be able to spend $41,000 a year. A couple needs only $371,000 in super between them to spend $60,000 a year. To meet their “low” standard – which still enables you to spend more than 30% of retirees – single Australians need $76,000 in super at retirement, and couples $95,000 (while also qualifying for a full Age Pension of $30,000 a year). That’s provided that you own your own home (more on that later). <h2>Ignore the super lobby’s estimates</h2> Australians should ignore <a href="https://www.superannuation.asn.au/resources/retirement-standard/">the retirement standards</a> produced by super lobby group the Association of Superannuation Funds of Australia. Their “<a href="https://www.superannuation.asn.au/resources/retirement-standard/">comfortable</a>” standard assumes retirees need an annual income of $52,085 as a single, and $73,337 as a couple. This would require a super balance of $595,000 for a single person, and $690,000 for a couple. But this is a standard of living most Australians don’t have before retirement. It is higher than what 80% of single working Australians, and 70% of couples, <a href="https://insidestory.org.au/the-reassuring-truth-about-retirement-incomes/">spend today</a>. For most Australians, saving enough to meet the super lobby’s “comfortable” standard in retirement can only come by being uncomfortable during their working life. <h2>Most Australians are on track for a comfortable retirement</h2> The good news is most Australians are on track. The federal government’s <a href="https://treasury.gov.au/sites/default/files/2021-02/p2020-100554-udcomplete-report.pdf">2020 Retirement Income Review</a> concludes most future Australian retirees can expect an adequate retirement, replacing a more-than-reasonable share of their pre-retirement earnings – more than the 65–75% benchmark nominated by the review. Even most Australians who work part-time or have broken work histories will hit this benchmark. Most retirees today feel more comfortable financially than younger Australians. And typically, they have enough money to sustain the same, or a higher, living standard in retirement than they had when working. <h2>Rising mortgage debt doesn’t change this story</h2> More Australians are retiring with mortgage debt – about 13% of over-65s had a mortgage in 2019–20, <a href="https://www.ahuri.edu.au/sites/default/files/migration/documents/AHURI_RAP_Issue_176_Housing-equity-withdrawal-in-Australia.pdf">up from 4% in 2002–03</a>. But the government’s <a href="https://treasury.gov.au/sites/default/files/2021-02/p2020-100554-udcomplete-report.pdf">retirement income review</a> found most retirees who used $100,000 of their super to pay off the mortgage when they retire would still have an adequate retirement income. This is, in part, because many would qualify for more Age Pension after using a big chunk of super to pay off the mortgage. And retirees can get a loan via the government’s <a href="https://www.servicesaustralia.gov.au/home-equity-access-scheme">Home Equity Access Scheme</a> to draw equity out of their home up to a maximum value of 150% of the Age Pension, or $45,000 a year, irrespective of how much Age Pension you are eligible for. The outstanding debt accrues with interest, which the government recovers when the property is sold, or from the borrower’s estate when they die, reducing the size of the inheritance that goes to the kids. <h2>But what about renters?</h2> One group of Australians is not on track for a comfortable retirement: those who don’t own a home and must keep paying rent in retirement. Nearly half of retired renters <a href="https://grattan.edu.au/news/repairing-australias-retirement-income-system/">live in poverty today</a>. Most Australians approaching retirement own their own homes today, but fewer will do so in future. Among the poorest 40% of 45–54-year-olds, just 53% own their home today, <a href="https://grattan.edu.au/news/the-great-australian-nightmare/">down from 71% four decades ago</a>. But a single retiree renting a unit for $330 a week – cheaper than 80% of the one-bedroom units across all capital cities – would need an extra $200,000 in super, in addition to Commonwealth Rent Assistance (according to the government’s <a href="https://moneysmart.gov.au/retirement-income/retirement-planner">Money Smart Retirement Planner</a>). This is why raising Commonwealth Rent Assistance to help renting retirees keep a roof over their heads should be an urgent priority for the federal government. Australians have been told for decades that they’re not saving enough for retirement. But the vast majority of retirees today and in future are likely to be financially comfortable.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/243596/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/brendan-coates-154644">Brendan Coates</a>, Program Director, Economic Policy, <a href="https://theconversation.com/institutions/grattan-institute-1168">Grattan Institute</a> and <a href="https://theconversation.com/profiles/joey-moloney-1334959">Joey Moloney</a>, Deputy Program Director, Housing and Economic Security, <a href="https://theconversation.com/institutions/grattan-institute-1168">Grattan Institute</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/how-much-do-you-need-to-retire-its-probably-a-lot-less-than-you-think-243596">original article</a>. </div>

Retirement Income

Up to 40% of bushfires in parts of Australia are deliberately lit. But we’re not doing enough to prevent them

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/nichola-tyler-938790">Nichola Tyler</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> and <a href="https://theconversation.com/profiles/troy-mcewan-116967">Troy McEwan</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> A recent bushfire in Kadnook, western Victoria, which destroyed at least one property and burned more than 1,000 hectares of land, is being investigated due to <a href="https://www.abc.net.au/news/2024-11-19/arson-chemists-investigate-blaze-that-destroyed-home/104621628">suspicion it was deliberately lit</a>. This is not an isolated example. About 28% of bushfires in south-east Australia are <a href="https://www.publish.csiro.au/wf/wf15054">deliberately lit</a>. The figure rises to 40% if we’re only talking about fires with a known cause. These figures are consistent with <a href="https://www.sciencedirect.com/science/article/pii/S0048969722074204">international trends</a> and tell us preventing arson and unsafe fire behaviour alone could significantly reduce the number of bushfires. Despite this, prevention of deliberately lit bushfires is mostly absent from emergency, public health and climate action plans. <h2>These fires are devastating</h2> Deliberately lit bushfires can spread rapidly and have devastating consequences. They often occur <a href="https://www.tandfonline.com/doi/full/10.1080/13218719.2011.598633?casa_token=tHnKrSSDFyIAAAAA%3AVKBGpknNEYOUPMI6IPRI3GRgkUQneXo_Edy1NeAaLlpmk1xmvwkrFKzJW20ZDvE23A41rFbBMuIn">on the edge of urban areas</a> close to populated places, where there are both dense vegetation and flammable structures. We see a peak in bushfires during summer when hot temperatures, low rainfall, and dry conditions make fire a more potent threat. Climate change, land management practices, and increased interaction between people and rural areas increase our vulnerability to fire and the risks associated with deliberate fires. The royal commission into Victoria’s devastating Black Saturday fires in 2009 <a href="http://royalcommission.vic.gov.au/finaldocuments/summary/PF/VBRC_Summary_PF.pdf">reported</a> 173 people died and an additional <a href="https://www.cfa.vic.gov.au/about-us/history-major-fires/major-fires/black-saturday-2009">414 were injured</a>. The commission concluded at least three of the 15 fires that caused (or had the potential to cause) the greatest harm were deliberately lit. The commission concluded we need to better understand arson. It recommended research to improve how best to prevent arson and how to detect who’s at risk of offending. Nearly 15 years on from Black Saturday, these recommendations have not been implemented. There is also very limited evidence globally about how to prevent both bushfire arson and deliberately lit fires more broadly (for instance, fires set to structures or vehicles). <h2>Who lights these fires?</h2> We know little about the characteristics and psychology of people who light bushfires or how to intervene to prevent these fires. The little research we have suggests there is no one “profile” or “mindset” associated with deliberately lighting bushfires. But there are some risk factors or <a href="https://www.tandfonline.com/doi/full/10.1080/13218719.2011.598633?casa_token=83sfFv6u7bkAAAAA%3A_nqjVgizI88CsEzoYBzPR-gYqCoMWtNFwcfKw0ZUqp68uJ6Zbk9ZTu7E_oJ7dpL6RGFUv7m7qHBO#d1e341">vulnerabilities</a> we see more commonly in people who light them. These include: <ul> <li> an interest or fascination with fire or fire paraphernalia. This could include an interest in watching fire, or a fascination with matches or the fire service </li> <li> experiences of social isolation, including a lack of friends or intimate relationships </li> <li> increased impulsivity </li> <li> general antisocial behaviour, such as contact with the police, truanting or property damage </li> <li> difficulties managing and expressing emotions </li> <li> problems with being assertive. </li> </ul> However, most people with these vulnerabilities will never light a fire. Research shows <a href="https://journals.sagepub.com/doi/full/10.1177/0004867413492223">rates of mental illness are higher</a> in people who set fires (including schizophrenia, mood and anxiety disorders, personality dysfunction, and substance use disorders). However, mental health symptoms are <a href="https://www.taylorfrancis.com/chapters/edit/10.4324/9781315685960-19/role-mental-disorder-firesetting-behaviour-troy-mcewan-lauren-ducat">rarely a direct cause of firesetting</a>. Instead, they appear to worsen existing vulnerabilities. <h2>Why do people light these fires?</h2> There are many, complex reasons why people light fires. Commonly reported drivers <a href="https://www.aic.gov.au/sites/default/files/2020-05/tandi348.pdf">include</a>: relieving boredom or creating excitement, gaining positive recognition for putting out a fire (they want to be seen as a hero), as a cry for help, or because they’re angry. However, not everyone who lights a fire intends to cause serious damage or harm. In some cases, people may not be aware of the possible consequences of lighting a fire or that the fire may spread into a bushfire. Knowing these kinds of facts about people who light bushfires is important. However, they don’t help us prevent people from lighting fires in the first place. This is because authorities don’t always know who sets the fires. <h2>So how can we prevent this?</h2> First, we can learn more about why people set fires more generally, particularly those who do not attract attention from authorities. Research in the <a href="https://www.sciencedirect.com/science/article/pii/S0010440X0900073X">United States</a>, <a href="https://www.tandfonline.com/doi/full/10.1080/1068316X.2015.1111365">United Kingdom</a> and <a href="https://www.tandfonline.com/doi/full/10.1080/13218719.2024.2346720">New Zealand</a> has started to investigate those who set fires but don’t attract police attention. The aim is to identify ways to prevent people lighting fires in the first place, and support them so they don’t light more. There is almost no research in Australia or internationally into the effects of community awareness, and prevention campaigns or targeted strategies to prevent firesetting, including bushfire arson, in higher risk groups. We know slightly more about interventions to reduce repeat firesetting. <a href="https://www.sciencedirect.com/science/article/pii/S1359178922000246?casa_token=OgEjtCFZfIUAAAAA:Tj-KiUQjvgF1PLR5ZjiHmgWovA83hFT3R6ZyPzWa9F6Gsbje3pJw90AqDqI1pRrvPksTboaJ8w">Fire safety education programs</a> delivered by fire and rescue services show some promise as an early intervention for children and adolescents who have already set a fire, particularly those motivated by curiosity, experimentation, or who are not aware of the consequences. There is also some evidence suggesting <a href="https://www.sciencedirect.com/science/article/pii/S1359178924000351?casa_token=5NtjG6-wIOcAAAAA:95TCYlrBB4dnaqEmd1fnMLmVM6_E8w2n9kCN5aGnIoVr1F1OjfifXULSCnhjWB_GCnStD80_OQ">specialist psychological interventions</a> can be effective in reducing vulnerabilities associated with adult firesetting. Forensic or clinical psychologists typically deliver a combination of cognitive behavioural therapy (a type of talking therapy), skills building (such as building coping skills, emotion and impulse control, and reducing their interest in fire), and fire safety education. However, <a href="https://www.thelancet.com/journals/lanpsy/article/PIIS2215-0366(19)30341-4/fulltext">availability of firesetting interventions is patchy</a> both in Australia and internationally. Interventions that are available are also not always tailored to people with <a href="https://www.tandfonline.com/doi/full/10.1080/13218719.2011.585223#d1e398">complex needs</a>, such as those with significant emotional or behavioural problems or mental health needs. We also don’t know if these interventions lead to a long-term change in behaviour. <h2>Climate change is making this urgent</h2> The continued and escalating effects of climate change makes it more urgent than ever to address the problem of <a href="https://esajournals.onlinelibrary.wiley.com/doi/full/10.1002/fee.2359">deliberate firesetting, including bushfire arson</a>. Failing to address deliberate firesetting will have significant long-term consequences for public health, human life and the environment. But until funding is available for Australian arson research, identifying and helping people who are more likely to set fires will continue to be based on guesswork rather than evidence. As we enter another summer of high fire danger, our failure to fund arson research should be at the forefront of everyone’s minds.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/243584/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/nichola-tyler-938790">Nichola Tyler</a>, Senior Lecturer in Forensic Psychology, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> and <a href="https://theconversation.com/profiles/troy-mcewan-116967">Troy McEwan</a>, Professor of Clinical and Forensic Psychology, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/up-to-40-of-bushfires-in-parts-of-australia-are-deliberately-lit-but-were-not-doing-enough-to-prevent-them-243584">original article</a>. </div>

Legal

There are 2 main ways to stretch – the one you should choose depends on what you want your body to do

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/hunter-bennett-1053061">Hunter Bennett</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> and <a href="https://theconversation.com/profiles/lewis-ingram-1427671">Lewis Ingram</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Picture this: you’ve just woken up and rolled out of bed. Your feet hit the floor, and your legs buckle. They are in absolute agony – that run yesterday has really come back to haunt you. And then you remember you forgot to stretch before and after your run. Surely that’s the reason you’re so sore today. Or is it? We’ve all heard about the importance of stretching before and after exercise. But does it really make a difference? Here’s what the science says. <h2>What is stretching?</h2> There are many different types of stretching, but the two most common are <a href="https://pubmed.ncbi.nlm.nih.gov/22319684">static and dynamic stretching</a>. Static stretching involves moving a muscle (or muscles) into a lengthened position and holding this for a <a href="https://pubmed.ncbi.nlm.nih.gov/15292749/">short period of time</a> – often anywhere between 15 and 90 seconds. A common example of this would be keeping your heels on the ground while leaning forward to touch the ground with a straight knee to stretch your hamstring muscles. Meanwhile, <a href="https://pubmed.ncbi.nlm.nih.gov/21373870/">dynamic stretching</a> involves actively moving your muscles and joints back and forth through their available range of motion. Common examples include swinging your legs back and forth, from side to side, or swinging your arms in circles. <h2>Stretching before exercise</h2> The main reasons people stretch before exercise are to increase flexibility, improve performance, and reduce the risk of injury. While we know stretching <a href="https://pubmed.ncbi.nlm.nih.gov/29223884/">increases flexibility</a>, its effect on <a href="https://pubmed.ncbi.nlm.nih.gov/17909411/">performance</a> and <a href="https://pubmed.ncbi.nlm.nih.gov/18027995/">injury</a> is less clear. But let’s look at what the evidence says for each one. Flexibility Both static and dynamic stretching increase flexibility, although static stretching seems to have a <a href="https://www.sciencedirect.com/science/article/pii/S2095254623000571">slightly larger effect</a>. Short-term static stretching inhibits your <a href="https://www.healthline.com/health/why-does-stretching-feel-good#:%7E:text=Research%20has%20shown%20that%20static,of%20your%20sympathetic%20nervous%20system.">sympathetic nervous system</a> (your fight or flight system), which reduces the stiffness of your <a href="https://www.sciencedirect.com/science/article/pii/S2095254624000693#bib0010">muscles and tendons</a>. This makes you more flexible straight after stretching. In the long term, static stretching is thought to make you more flexible by increasing the length of <a href="https://pubmed.ncbi.nlm.nih.gov/37318696/">your muscles and tendons</a> or by simply making you <a href="https://pubmed.ncbi.nlm.nih.gov/28801950/">more tolerant to the discomfort caused by stretching</a>. Performance When it comes to improving performance, this will depend on the type of physical activity you’re doing. If you are about to move your body through large ranges of motion – something like gymnastics or dancing – then the improvements in flexibility following stretching will likely result in better performance. On the flip side, research has shown static stretching may <a href="https://pubmed.ncbi.nlm.nih.gov/26642915/">impair performance</a> by up to 5% in activities that rely on maximum strength and power, such as shotput and powerlifting. This might be because of the reduced nervous system activation we mentioned earlier, making it more challenging for your muscles to produce force. However, significant impairments only seem to occur when stretching for <a href="https://pubmed.ncbi.nlm.nih.gov/26642915/">more than 60 seconds</a>. Stretching for less than 60 seconds appears to impact performance minimally (by around 1%). On the other hand, dynamic stretching increases <a href="https://pubmed.ncbi.nlm.nih.gov/12762825">muscle temperature</a> and the speed at which your nerves <a href="https://cdnsciencepub.com/doi/10.1139/apnm-2015-0235">send messages to your muscles</a>, which might improve muscle performance. Dynamic stretching has been shown to <a href="https://bmcsportsscimedrehabil.biomedcentral.com/articles/10.1186/s13102-023-00703-6">enhance strength and power by a small amount</a>. This might make it a better option before activities that are performed explosively, such as sprinting, jumping, lifting weights or playing team sport. Injury and soreness When it comes to reducing injury, whether stretching before exercise is beneficial remains unclear. Many studies have shown stretching <a href="https://pubmed.ncbi.nlm.nih.gov/24100287/">doesn’t have an effect</a>. But a lot of these look at the effect of stretching on all types of injuries, which might not show its true effect. For example, a broken arm from a tackle would be grouped with a calf strain, but it seems logical that stretching is more likely to reduce the risk of the calf muscle strain than the broken arm. A <a href="https://link.springer.com/article/10.1007/s11332-024-01213-9">recent review</a> did explore the effect of stretching on different types of injuries and found static stretching may reduce the risk of muscle, but not tendon, injuries. To date, there’s no evidence to suggest stretching would reduce the risk of broken bones and contact injuries. There’s very little research exploring whether dynamic stretching alone can reduce injury risk. <a href="https://link.springer.com/article/10.1007/s40279-023-01847-8">One study</a> showed dynamic stretching can improve joint stability, which might reduce the risk of joint injuries (such as ankle sprains). But more research is needed to make any conclusions with confidence. Many people also stretch before exercise to help prevent muscle soreness after exercise. However, <a href="https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD004577.pub3/full">research has shown</a> stretching before exercise has no meaningful impact on muscle soreness after exercise. <h2>Stretching after exercise</h2> The main reason people stretch after exercise is to improve recovery and reduce muscle soreness. The most common approach is static stretching. However, like stretching before exercise, research doesn’t indicate stretching after exercise reduces <a href="https://pubmed.ncbi.nlm.nih.gov/27447321/">muscle damage or soreness</a>. It has also been suggested <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC4831894/">really intense stretching can damage your muscles</a>, which might even make muscle soreness worse. But this isn’t a consistent finding, and may only happen to certain people. However, stretching does <a href="https://pubmed.ncbi.nlm.nih.gov/21386722/">promote relaxation</a>. So gentle stretching could be a nice way to wind down after an intense exercise session. <h2>So, what should you do?</h2> Maybe a lack of stretching isn’t the reason you were sore after you run after all. Your legs are probably aching because you simply ran further, or harder, than you normally do. But that doesn’t mean you shouldn’t stretch. The available evidence suggests doing some dynamic stretching before exercise will increase flexibility and improve your performance, whether you’re planning to go for a run, play a team sport, or lift weights. Static stretching can be great if you want to increase your flexibility, just don’t do it right before intense exercise. And after exercise, some gentle static stretching can help transition the body to a more relaxed state.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/244048/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/hunter-bennett-1053061">Hunter Bennett</a>, Lecturer in Exercise Science, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> and <a href="https://theconversation.com/profiles/lewis-ingram-1427671">Lewis Ingram</a>, Lecturer in Physiotherapy, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/there-are-2-main-ways-to-stretch-the-one-you-should-choose-depends-on-what-you-want-your-body-to-do-244048">original article</a>. </div>

Body

Ant stings can be painful. Here’s how to avoid getting stung this summer (and what to do if you do)

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/sam-robinson-2237268">Sam Robinson</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> With the start of summer just days away, many of us will be looking forward to long sunny days spent at the beach, by the pool, out camping or picnicking in the park. Insects also love summer. This is when most of them <a href="https://www.australiangeographic.com.au/topics/science-environment/2016/12/experts-predict-increased-insect-activity-this-summer/">breed and feed</a>. But this shared appreciation of the season can sometimes lead to conflict. Insects have long been prey to many species, including birds, mammals, amphibians and other insects. As such, they’ve evolved a diverse range of defences – perhaps none more familiar to humans than the sting. Many ants have a sting at their rear end which they use to deliver venom. It’s not the sting itself that causes pain, but rather <a href="https://www.nature.com/articles/s41467-023-38839-1">the venom</a>. Ant venom contains a cocktail of different chemicals, some of which have evolved specifically to manipulate nerve endings in our skin to cause pain. Let’s look at some of the different ant stings you might experience this summer in Australia, and how to respond. <h2>Bull ants</h2> Bull ants (also known as bulldog ants, jumper ants, or jack jumpers) are large, for an ant. Some species can reach a length of <a href="https://en.wikipedia.org/wiki/Myrmecia_(ant)#:%7E:text=Each%20of%20their%20eyes%20contains,mm%20(1.5%20in)%3B%20M.">4 centimetres</a>. They are easily recognisable with their large eyes, long mandibles (jaws) and aggressive nature. Their sting is immediate, hot, sharp, and unmistakable, not dissimilar to that of a honeybee. The intense pain will last only a few minutes, before it’s replaced by some redness and swelling around the sting site. <h2>Green-head ants</h2> Green-head ants are also called green ants (but not to be confused with the <a href="https://en.wikipedia.org/wiki/Oecophylla_smaragdina">green tree ants</a> of northern Australia which do not sting). Green-head ants are common, and love our grass lawns. At around <a href="https://en.wikipedia.org/wiki/Green-head_ant">6 millimetres long</a>, they are significantly smaller than bull ants. They can be recognised by their shiny green and purple exoskeleton. Green-head ants tend to be less aggressive than bull ants, but they can still deliver a meaningful sting. The pain of a green-head ant’s sting can build more gradually, and create an intense, sticky ache. <h2>Fire ants</h2> Fire ants (or red imported fire ants) are originally from South America. They were first detected <a href="https://www.fireants.org.au/stop/how-fire-ants-arrived-in-australia">in Brisbane in 2001</a>, thought to have hitched a ride in shipping containers, and have since spread across south-east Queensland. Fire ants are reddish-brown and black and range in size from <a href="https://www.fireants.org.au/look/appearance">2–6 millimetres long</a>. You’re most likely to encounter fire ants at their nests, which look like a pile of powdery soil. A fire ant nest doesn’t have an obvious entry, which is a good way to distinguish them from other similar ant nests. Disturbing a fire ant nest will awaken an angry mass of hundreds of ants and put you at risk of being stung. The initial pain from an individual sting is like an intense, hot itch, though manageable. But fire ant stings rarely occur in single digits. One ant can sting multiple times, and multiple ants can sting one person, which can lead to <a href="https://theconversation.com/fire-ants-are-on-the-march-heres-what-happens-when-they-sting-218908">hundreds of stings</a>. Fire ant stings can lead to pus-filled ulcers and scarring in the days afterwards. If you live in an area where there are fire ants, it’s worth taking a few minutes to educate yourself on how to <a href="https://www.fireants.org.au/look">recognise and report</a> them. <h2>Electric ants</h2> <a href="https://www.antwiki.org/wiki/Wasmannia_auropunctata">Electric ants</a> are another nasty accidental import, originally from Central and South America. Currently restricted to <a href="https://www.outbreak.gov.au/current-outbreaks/electric-ants">Cairns and surrounds</a>, these are tiny (1.5 millimetres long) yellow ants. Like fire ants, these ants will typically defend en masse, so many will sting at once. Their sting is more painful than you’d expect from such a tiny creature. I liken it to being showered in red hot sparks. If you think you see electric ants, you should report this to <a href="https://www.business.qld.gov.au/industries/farms-fishing-forestry/agriculture/biosecurity/animals/invasive/restricted/electric-ant">Biosecurity Queensland</a>. <h2>Aussie ants aren’t the worst</h2> You might be surprised to hear Australian ants don’t even make the podium for the most painful ant stings. Among the prize winners are <a href="https://www.press.jhu.edu/books/title/10878/sting-wild">harvester ants</a> (North and South America) which cause an extreme, sticky ache, likened to a drill slowly turning in your muscle – for as long as 12 hours. The gold medal goes to the sting of the bullet ant of South and Central America, which <a href="https://www.press.jhu.edu/books/title/10878/sting-wild">has been described</a> as: <blockquote> Pure, intense, brilliant pain. Like walking over flaming charcoal with a 3-inch nail embedded in your heel. </blockquote> <h2>How to avoid getting stung (and what to do if you do)</h2> Fortunately, the solution is usually very simple. Look before you sit on the ground or lay out your picnic blanket, avoiding areas where you see ant nests or lots of foraging ants. Choice of footwear can also be important. In my experience, perhaps unsurprisingly, most stings occur on thong-wearing feet. If you do get stung, in most cases it’s going to get better on its own. Pain will usually subside after a few minutes (sometimes a little longer for a green-head ant sting). The redness, swelling and itch that typically follow can last for a few days. In the meantime, if needed, <a href="https://www.healthdirect.gov.au/insect-bites-and-stings">an ice pack</a> will help with the pain. If it’s particularly bad, a local anaesthetic cream containing lidocaine may offer some temporary relief. You can get this over the counter at the pharmacy. A small proportion of people may have an allergic reaction to ant stings. In very severe cases this might involve <a href="https://www.healthdirect.gov.au/insect-bites-and-stings#anaphylaxis">trouble breathing</a> or swallowing. If you or someone you’re with experiences these symptoms after an ant sting, seek urgent medical attention.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/241582/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/sam-robinson-2237268">Sam Robinson</a>, Senior Research Fellow, Institute for Molecular Bioscience, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/ant-stings-can-be-painful-heres-how-to-avoid-getting-stung-this-summer-and-what-to-do-if-you-do-241582">original article</a>. </div>

Body

Readers response: What's one thing you must do when visiting Australia?

We asked our readers what travellers shouldn't miss when they head to Australia. Here's what they said. Jim Bell - The one thing you must do is to take a couple months there. We were there for 3 weeks and it wasn't nearly long enough to see and do everything we wanted to. Lorraine James - Land in Brisbane and take a cruise ship to Tasmania. Princess does a cruise stopping in Sydney, Bega, a country town on the coast and then of course Port Arthur old penal settlement then Hobart ,Tasmania. Get a taste of Australia. Deedee Cullum - If you’re in a major city then catch a train for the day. Eg, Sydney to Blue Mountains or Melbourne to Dandenongs. That way you’ll see some bush without the bother of driving. Anne Hare - Go see Uluru in the Northern Territory. It's a long way from the coast but it will astound you. Suzanne Maree Saxelby - Remember to visit the outback. It has a beauty that the coastline doesn't have. Janette Mitchell - Take the XPT train from Sydney to Coffs Harbour. So much beautiful scenery & Coffs Harbour is a great place to stay. Mattie Smith - Don't just stick to the coast! Australia has so much to offer. Avis Tolcher - Visit the Whitsundays. So beautiful. Judith Turpin - Wander through the Daintree on foot. Swim in a deep fresh water hole. Take your children on a guided night walk through the forest. Magic! Image credits: Shutterstock

Domestic Travel

7 things you can do if you think you sweat too much

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/michael-freeman-223922">Michael Freeman</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> Sweating is our body’s way of cooling down, a bit like an internal air conditioner. When our core temperature rises (because it’s hot outside, or you’re exercising), sweat glands all over our skin release a watery fluid. As that fluid evaporates, it takes heat with it, keeping us from overheating. But sweating can vary from person to person. Some people might just get a little dewy under the arms, others feel like they could fill a swimming pool (maybe not that dramatic, but you get the idea). So what’s a normal amount of sweat? And what’s too much? <h2>Why do some people sweat more than others?</h2> How much you sweat depends on a number of <a href="https://www.tandfonline.com/doi/pdf/10.1080/23328940.2019.1632145">factors</a> including: <ul> <li> your age (young kids generally sweat less than adults) </li> <li> your sex (men tend to sweat more than women) </li> <li> how active you are. </li> </ul> The average person sweats at the rate of <a href="https://www.tandfonline.com/doi/pdf/10.1080/23328940.2019.1632145">300 millilitres per hour</a> (at 30°C and about 40% humidity). But as you can’t go around measuring the volume of your own sweat (or weighing it), doctors use another measure to gauge the impact of sweating. They ask whether sweating interferes with your daily life. Maybe you stop wearing certain clothes because of the sweat stains, or feel embarrassed so don’t go to social events or work. If so, this is a medical condition called <a href="https://www.dermcoll.edu.au/atoz/axillary-hyperhidrosis/">hyperhidrosis</a>, which affects <a href="https://onlinelibrary.wiley.com/doi/pdf/10.1111/1346-8138.16908">millions of people</a> worldwide. People with this condition most commonly report problematic armpit sweating, as you’d expect. But sweaty hands, feet, scalp and groin can also be an issue. Hyperhidrosis can be a symptom of another medical condition, such as an <a href="https://www.frontiersin.org/articles/10.3389/fendo.2023.1167890/pdf">overactive thyroid</a>, <a href="https://www.tandfonline.com/doi/pdf/10.1080/23328940.2019.1632145">fever or menopause</a>. But hyperhidrosis can have no obvious cause, and the reasons behind this so-called primary hyperhidrosis are a bit of a mystery. People have normal numbers of sweat glands but researchers think they simply over-produce sweat after triggers such as stress, heat, exercise, tobacco, alcohol and hot spices. There may also be a genetic link. <h2>OK, I sweat a lot. What can I do?</h2> 1. Antiperspirants Antiperspirants, particularly ones with <a href="https://onlinelibrary.wiley.com/doi/pdf/10.1111/ics.12852">aluminium</a>, are your first line of defence and are formulated to reduce sweating. Deodorants only stop body odour. <a href="https://www.drugs.com/mtm/aluminum-chloride-hexahydrate-topical.html#:%7E:text=Aluminum%20chloride%20hexahydrate%20is%20an,excessive%20sweating%2C%20also%20called%20hyperhidrosis.">Aluminum chloride hexahydrate</a>, <a href="https://go.drugbank.com/drugs/DB11081">aluminium chloride</a> or the weaker <a href="https://cosmileeurope.eu/inci/detail/807/aluminum-zirconium-tetrachlorohydrex-gly/">aluminum zirconium tetrachlorohydrex glycinate</a> react with proteins in the sweat glands, forming a plug. This plug temporarily blocks the sweat ducts, reducing the amount of sweat reaching the skin’s surface. These products can contain <a href="https://www.termedia.pl/Journal/-7/pdf-46948-10?filename=Hyperhidrosis.pdf">up to 25%</a> aluminium. The higher the percentage the better these products work, but the more they irritate the skin. 2. Beat the heat This might seem obvious, but staying cool can make a big difference. That’s because you have less heat to lose, so the body makes less sweat. Avoid super-hot, long showers (you will have more heat to loose), wear loose-fitting clothes made from breathable fabrics such as cotton (this allows any sweat you do produce to evaporate more readily), and carry a little hand fan to help your sweat evaporate. When exercising try <a href="https://pathprojects.com/blogs/news/how-to-make-an-ice-bandana-for-trail-running-and-hiking?srsltid=AfmBOorsJpNUDs_ZkAkJDFbDFFSeT5TtWsU4aqI4-_hHWbl_wuZLsgHn">ice bandanas</a> (ice wrapped in a scarf or cloth, then applied to the body) or wet towels. You can wear these around the neck, head, or wrists to reduce your body temperature. Try also to modify the time or place you exercise; try to find cool shade or air-conditioned areas when possible. If you have tried these first two steps and your sweating is still affecting your life, talk to your doctor. They can help you figure out the best way to manage it. 3. Medication Some <a href="https://www.termedia.pl/Journal/-7/pdf-46948-10?filename=Hyperhidrosis.pdf">medications</a> can help regulate your sweating. Unfortunately some can also give you side effects such as a dry mouth, blurred vision, stomach pain or constipation. So talk to your doctor about what’s best for you. Your GP may also refer you to a dermatologist – a doctor like myself who specialises in skin conditions – who might recommend different treatments, including some of the following. 4. Botulinum toxin injections Botulinum toxin injections are not just used for cosmetic reasons. They have many applications in medicine, including blocking the nerves that control the sweat glands. They do this for many months. A dermatologist usually gives the injections. But they’re only subsidised by <a href="https://www9.health.gov.au/mbs/fullDisplay.cfm?type=item&q=18362&qt=ItemID">Medicare</a> in Australia for the armpits and if you have primary hyperhidrosis that hasn’t been controlled by the strongest antiperspirants. These injections are given up to three times a year. It is not subsidised for other conditions, such as an overactive thyroid or for other areas such as the face or hands. If you don’t qualify, you can have these injections privately, but it will cost you hundreds of dollars per treatment, which can last up to six months. 5. Iontophoresis This involves using a device that passes a weak electrical current through water to the skin to <a href="https://www.sciencedirect.com/science/article/am/pii/S254243272030014X">reducing sweating</a> in the hands, feet or armpits. Scientists aren’t sure exactly how it works. But this is the <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC9826940/">only way</a> to control sweating of the hands and feet that does not require drugs, surgery or botulinum toxin injections. This treatment is not subsidised by Medicare and not all dermatologists provide it. However, you can buy and use your own device, which tends to be cheaper than accessing it privately. You can ask your dermatologist if this is the right option for you. 6. Surgery There is a procedure to cut certain nerves to the hands that stop them sweating. This is <a href="https://www.mdpi.com/2077-0383/11/3/786/pdf">highly effective</a> but can cause sweating to occur elsewhere. There are also other surgical options, which you can discuss with your doctor. 7. Microwave therapy This is a <a href="https://www.tandfonline.com/doi/pdf/10.1080/09546634.2022.2089333">newer treatment</a> that zaps your sweat glands to destroy them so they can’t work any more. It’s not super common yet, and it is quite painful. It’s available privately in a few centres.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/239397/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/michael-freeman-223922">Michael Freeman</a>, Associate Professor of Dermatology, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/7-things-you-can-do-if-you-think-you-sweat-too-much-239397">original article</a>. </div>

Body

Why do I get so anxious after drinking? Here’s the science behind ‘hangxiety’

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/blair-aitken-1510537">Blair Aitken</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> and <a href="https://theconversation.com/profiles/rebecca-rothman-2231560">Rebecca Rothman</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> You had a great night out, but the next morning, anxiety hits: your heart races, and you replay every conversation from the night before in your head. This feeling, known as hangover anxiety or “<a href="https://adf.org.au/insights/what-is-hangxiety/">hangxiety</a>”, <a href="https://onlinelibrary.wiley.com/doi/10.1002/hup.2623">affects around 22%</a> of social drinkers. While for some people, it’s mild nerves, for others, it’s a wave of anxiety that feels impossible to ride out. The “Sunday scaries” may make you feel panicked, filled with dread and unable to relax. Hangover anxiety can make even simple tasks feel overwhelming. Here’s why it happens, and what you can do about it. <h2>What does alcohol do to our brains?</h2> A hangover is the body’s way of recovering after drinking alcohol, bringing with it a range of symptoms. <a href="https://www.mdpi.com/2077-0383/10/23/5691">Dehydration and disrupted sleep</a> play a large part in the pounding headaches and nausea many of us know too well after a big night out. But hangovers aren’t just physical – there’s a strong mental side too. Alcohol is a nervous system depressant, meaning it alters how certain chemical messengers (or neurotransmitters) behave in the brain. Alcohol relaxes you by increasing <a href="https://my.clevelandclinic.org/health/articles/22857-gamma-aminobutyric-acid-gaba">gamma-aminobutyric acid</a> (GABA), the neurotransmitter that makes you feel calm and lowers inhibitions. It decreases <a href="https://my.clevelandclinic.org/health/articles/22839-glutamate">glutamate</a> and this also slows down your thoughts and helps ease you into a more relaxed state. Together, this interaction affects your mood, emotions and alertness. This is why when we drink, we often feel more sociable, carefree and willing to let our guard down. As the effects of the alcohol wear off, your brain works to rebalance these chemicals by <a href="https://www.sciencedirect.com/science/article/pii/S0191886918305762">reducing GABA and increasing glutamate</a>. This shift has the opposite effect of the night before, causing your brain to become more excitable and overstimulated, which can lead to feelings of anxiety. So why do some people get hangxiety, while others don’t? There isn’t one clear answer to this question, as several factors can play a role in whether someone experiences hangover-related anxiety. <h2>Genes play a role</h2> For some, a hangover is simply a matter of how much they drank or how hydrated they are. But genetics may also play a significant role. <a href="https://onlinelibrary.wiley.com/doi/10.1111/add.12699">Research</a> shows your genes can explain almost half the reason why you wake up feeling hungover, while your friend might not. Because genes influence how your body processes alcohol, some people may experience more intense hangover symptoms, such as headaches or dehydration. These stronger physical effects can, in turn, <a href="https://onlinelibrary.wiley.com/doi/pdf/10.1002/hup.2623">trigger anxiety during a hangover</a>, making you more susceptible to “hangxiety.” <h2>Do you remember what you said last night?</h2> But one of the most common culprits for feeling anxious the next day is often <a href="https://journals.sagepub.com/doi/pdf/10.1177/0091450915604988">what you do while drinking</a>. Let’s say you’ve had a big night out and you can’t quite recall a conversation you had or something you did. Maybe you acted in ways that you now regret or feel embarrassed about. You might fixate on these thoughts and get trapped in a cycle of worrying and rumination. This cycle can be hard to break and can make you feel more anxious. <a href="https://doi.org/10.1016/j.addbeh.2023.107619">Research</a> suggests people who already struggle with feelings of anxiety in their day-to-day lives are especially vulnerable to hangxiety. Some people drink alcohol to unwind after a stressful day or to make themselves feel more comfortable at social events. This often leads to <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC9756407">heavier consumption</a>, which can make hangover symptoms more severe. It can also begin a cycle of drinking to feel better, making hangxiety even harder to escape. <h2>Preventing hangover anxiety</h2> The best way to prevent hangxiety is to limit your alcohol consumption. The <a href="https://adf.org.au/reducing-risk/alcohol/alcohol-guidelines">Australian guidelines</a> recommend having no more than ten standard drinks per week and no more than four standard drinks on any one day. Generally, the more you drink, the more intense your hangover symptoms might be, and the worse you are likely to feel. Mixing other drugs with alcohol can also increase the risk of hangxiety. This is especially true for party drugs, such as ecstasy or MDMA, that give you a temporary high but can lead to anxiety as they wear off and you are <a href="https://adf.org.au/insights/drug-comedowns">coming down</a>. If you do wake up feeling anxious: <ul> <li> focus on the physical recovery to help ease the mental strain </li> <li> drink plenty of water, eat a light meal and allow yourself time to rest </li> <li> try <a href="https://www.headspace.com/mindfulness/mindfulness-101">mindfulness meditation</a> or deep breathing exercises, especially if anxiety keeps you awake or your mind races </li> <li> consider journalling. This can help re-frame anxious thoughts, put your feelings into perspective and encourage self-compassion </li> <li> talk to a close friend. This can provide a safe space to express concerns and feel less isolated. </li> </ul> Hangxiety is an unwelcome guest after a night out. Understanding why hangxiety happens – and how you can manage it – can make the morning after a little less daunting, and help keep those anxious thoughts at bay.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/240991/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/blair-aitken-1510537">Blair Aitken</a>, Postdoctoral Research Fellow in Psychopharmacology, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> and <a href="https://theconversation.com/profiles/rebecca-rothman-2231560">Rebecca Rothman</a>, PhD Candidate in Clinical Psychology, School of Health Sciences, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/why-do-i-get-so-anxious-after-drinking-heres-the-science-behind-hangxiety-240991">original article</a>. </div>

Mind

What causes the itch in mozzie bites? And why do some people get such a bad reaction?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/cameron-webb-6736">Cameron Webb</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> Are you one of these people who loathes spending time outdoors at dusk as the weather warms and mosquitoes start biting? Female mosquitoes <a href="https://www.annualreviews.org/content/journals/10.1146/annurev-ento-120811-153618">need blood</a> to develop their eggs. Even though they take a tiny amount of our blood, they can leave us with itchy red lumps that can last days. And sometimes something worse. So why does our body react and itch after being bitten by a mosquito? And why are some people more affected than others? <h2>What happens when a mosquito bites?</h2> Mosquitoes are attracted to warm blooded animals, including us. They’re attracted to the <a href="https://www.cambridge.org/core/journals/bulletin-of-entomological-research/article/abs/role-of-carbon-dioxide-in-hostfinding-by-mosquitoes-diptera-culicidae-a-review/2506B86EF63852B2D02EC3FCEE1E3B8B">carbon dioxide</a> we exhale, our body temperatures and, most importantly, <a href="https://www.abc.net.au/news/2024-11-08/mosquitoes-climate-change-skin/104548122">the smell of our skin</a>. The <a href="https://www.cell.com/trends/parasitology/abstract/S1471-4922(21)00237-3">chemical cocktail</a> of odours from bacteria and sweat on our skin <a href="https://www.cell.com/current-biology/fulltext/S0960-9822(23)00532-8">sends out a signal</a> to hungry mosquitoes. <a href="https://www.sciencedirect.com/science/article/pii/S2667114X21000522">Some people’s</a> skin smells more appealing to mosquitoes, and they’re more likely to be bitten than others. Once the mosquito has made its way to your skin, things get a little gross. The mosquito pierces your skin with their “proboscis”, their feeding mouth part. But the proboscis isn’t a single, straight, needle-like tube. There are multiple tubes, <a href="https://www.npr.org/sections/health-shots/2016/06/07/480653821/watch-mosquitoes-use-6-needles-to-suck-your-blood">some designed</a> for sucking and some for spitting. Once their mouth parts have been inserted into your skin, the mosquito will inject some saliva. This contains a mix of chemicals that gets the blood flowing better. There has even been a suggestion that future medicines could be inspired by the <a href="https://www.sydney.edu.au/news-opinion/news/2018/03/29/mosquito-saliva-vital-to-the-discovery-of-future-drugs.html">anti-blood clotting properties</a> of mosquito saliva. It’s not the stabbing of our skin by the mosquito’s mouth parts that hurts, it’s the mozzie spit our bodies don’t like. <h2>Are some people allergic to mosquito spit?</h2> Once a mosquito has injected their saliva into our skin, a variety of reactions can follow. For the lucky few, nothing much happens at all. For most people, and irrespective of the type of mosquito biting, <a href="https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2022.1024559/full">there is some kind of reaction</a>. Typically there is <a href="https://www.sciencedirect.com/science/article/abs/pii/S0161589023002304?via%3Dihub">redness and swelling of the skin</a> that appears within a few hours, but often more quickly, after just a few minutes. Occasionally, the reaction can cause pain or discomfort. Then comes the <a href="https://www.abc.net.au/news/health/2023-01-20/mosquito-bites-itchy-calamine-heat-ice-antihistamine-toothpaste/101652608">itchiness</a>. Some people do suffer severe reactions to mosquito bites. It’s a condition often referred to as “<a href="https://www.webmd.com/allergies/what-is-skeeter-syndrome">skeeter syndrome</a>” and is an allergic reaction caused by the protein in the mosquito’s saliva. This can cause large areas of swelling, blistering and fever. The chemistry of mosquito spit hasn’t really been well studied. But it has been shown that, for those who do suffer allergic reactions to their bites, the <a href="https://www.sciencedirect.com/science/article/abs/pii/S0091674904022183">reactions may differ</a> depending on the type of mosquito biting. We all probably get more tolerant of mosquito bites as we get older. Young children are certainly more likely to suffer more following mosquito bites. But as we get older, the reactions are less severe and may pass quickly without too much notice. <h2>How best to treat the bites?</h2> Research into treating bites <a href="https://linkinghub.elsevier.com/retrieve/pii/S0161589023002304">has yet to provide</a> a single easy solution. There are many <a href="https://www.healthline.com/health/outdoor-health/home-remedies-for-mosquito-bites">myths and home remedies</a> about what works. But there is little scientific evidence supporting their use. The best way to treat mosquito bites is by applying a cold pack to reduce swelling and to keep the skin clean to avoid any secondary infections. Antiseptic creams and lotions may also help. There is some evidence that <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC10309056/">heat may alleviate</a> some of the discomfort. It’s particularly tough to keep young children from scratching at the bite and breaking the skin. This can form a nasty scab that may end up being worse than the bite itself. Applying an anti-itch cream may help. If the reactions are severe, <a href="https://www.healthdirect.gov.au/insect-bites-and-stings">antihistamine medications</a> may be required. <h2>To save the scratching, stop the bites</h2> Of course, it’s better not to be bitten by mosquitoes in the first place. Topical <a href="https://theconversation.com/insect-repellents-work-but-there-are-other-ways-to-beat-mosquitoes-without-getting-sticky-171805">insect repellents</a> are a safe, effective and affordable way to reduce mosquito bites. Covering up with loose fitted long sleeved shirts, long pants and covered shoes also provides a physical barrier. <a href="https://theconversation.com/are-mosquito-coils-good-or-bad-for-our-health-88548">Mosquito coils and other devices</a> can also assist, but should not be entirely relied on to stop bites. There’s another important reason to avoid mosquito bites: millions of people around the world suffer from mosquito-borne diseases. More than <a href="https://www.who.int/news-room/fact-sheets/detail/malaria">half a million people die</a> from malaria each year. In Australia, <a href="https://journals.plos.org/plospathogens/article?id=10.1371/journal.ppat.1005070">Ross River virus</a> infects more than 5,000 people every year. And in recent years, there have been cases of serious illnesses caused by <a href="https://www.science.org/content/article/how-rains-pigs-and-waterbirds-fueled-shocking-disease-outbreak-australia">Japanese encephalitis</a> and <a href="https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2023.1256149/full">Murray Valley encephalitis</a> viruses. <a href="https://theconversation.com/profiles/cameron-webb-6736">Cameron Webb</a>, Clinical Associate Professor and Principal Hospital Scientist, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/what-causes-the-itch-in-mozzie-bites-and-why-do-some-people-get-such-a-bad-reaction-243044">original article</a>. </div>

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