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Extreme weather is landing more Australians in hospital – and heat is the biggest culprit

<a href="https://theconversation.com/profiles/amy-peden-1136424">Amy Peden</a>, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> Hospital admissions for injuries directly attributable to extreme weather events – such as heatwaves, bushfires and storms – have increased in Australia over the past decade. A new <a href="https://www.aihw.gov.au/reports/injury/extreme-weather-injuries/contents/about">report</a> from the Australian Institute of Health and Welfare (AIHW) shows 9,119 Australians were hospitalised for injuries from extreme weather from 2012-22 and 677 people died from these injuries in the decade up to 2021. In 2021-22, there were 754 injury hospitalisations directly related to extreme weather, compared to 576 in 2011-12. Extreme heat is responsible for most weather-related injuries. Exposure to prolonged natural heat can result in physical conditions ranging from mild heat stroke, to organ damage and <a href="https://www.dea.org.au/wp-content/uploads/2021/01/DEA-Fact-Sheet_HeatwavesWEB.pdf">death</a>. As Australia heads into summer with an El Niño, it’s important understand and prepare for the health risks associated with extreme weather. <h2>A spike every three years</h2> Extreme weather-related hospitalisations have spiked at more than 1,000 cases every three years, with the spikes becoming progressively higher. There were: <ul> <li>1,027 injury hospitalisations in 2013–14</li> <li>1,033 in 2016–17</li> <li>1,108 in 2019–20.</li> </ul> <iframe id="vLaas" class="tc-infographic-datawrapper" style="border: none;" src="https://datawrapper.dwcdn.net/vLaas/1/" width="100%" height="400px" frameborder="0"></iframe> In each of these three years, extreme heat had the biggest impact on hospital admissions and deaths. <iframe id="P03sm" class="tc-infographic-datawrapper" style="border: none;" src="https://datawrapper.dwcdn.net/P03sm/1/" width="100%" height="400px" frameborder="0"></iframe> Extreme heat accounted for 7,104 injury hospitalisations (78% of all injury hospitalisations) and 293 deaths (43% of all injury deaths) in the ten year period analysed. In 2011-12, there were 354 injury hospitalisations directly related to extreme heat. This rose to 579 by 2021-22. <h2>El Niño and La Niña</h2> Over the past three decades, extreme weather events have increased in <a href="https://www.ipcc.ch/report/ar5/syr/">frequency</a> and <a href="http://www.bom.gov.au/state-of-the-climate/">severity</a>. In Australia, El Niño drives a period of reduced rainfall, warmer temperatures and increased bushfire danger. La Niña, on the other hand, is associated with above average rainfall, cooler daytime temperatures and increased chance of tropical cyclones and flood events. Although similar numbers of heatwave-related hospitalisations occurred in El Niño and La Niña years studied, the number of injuries related to bushfires was higher in El Niño years. During the 2019–20 bushfires, in the week beginning January 5 2020, there were 1,100 more hospitalisations than the previous five-year average, an 11% increase. Although El Niño hasn’t directly been proved as the cause for these three spikes, according to the Bureau of Meteorology, two of the three years (2016-17 and 2019-20) were El Niño summers. And the other year (2013-14) was the warmest neutral year on record at that time. <h2>Regional differences</h2> Exposure to excessive natural heat was the most common cause leading to injury hospitalisation for all the mainland states and territories. From 2019 to 2022, there were 2,143 hospital admissions related to extreme heat, including: <ul> <li>717 patients from Queensland</li> <li>410 from Victoria</li> <li>348 from NSW</li> <li>267 from South Australia</li> <li>266 from Western Australia</li> <li>73 from the Northern Territory</li> <li>23 from the ACT</li> <li>19 from Tasmania.</li> </ul> <figure class="align-center "><img src="https://images.theconversation.com/files/556987/original/file-20231101-27-3c98xm.png?ixlib=rb-1.1.0&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/556987/original/file-20231101-27-3c98xm.png?ixlib=rb-1.1.0&q=45&auto=format&w=600&h=632&fit=crop&dpr=1 600w, https://images.theconversation.com/files/556987/original/file-20231101-27-3c98xm.png?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=632&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/556987/original/file-20231101-27-3c98xm.png?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=632&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/556987/original/file-20231101-27-3c98xm.png?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=794&fit=crop&dpr=1 754w, https://images.theconversation.com/files/556987/original/file-20231101-27-3c98xm.png?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=794&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/556987/original/file-20231101-27-3c98xm.png?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=794&fit=crop&dpr=3 2262w" alt="" /><figcaption><a class="source" href="https://www.aihw.gov.au/reports-data/latest-reports">AIHW National Hospital Morbidity Database</a>, <a class="license" href="http://creativecommons.org/licenses/by/4.0/">CC BY</a></figcaption></figure> The report also includes state and territory data on hospitalisations related to extreme cold and storms. During the ten-year period analysed, there were 773 injury hospitalisations and 242 deaths related to extreme cold. Extreme rain or storms accounted for 348 injury hospitalisations and 77 deaths. From 2019 to 2022, there were 191 hospitalisations related to extreme cold, with Victoria recording the highest number (51, compared to 40 in next-placed NSW). During the same period there were 111 hospitalisations related to rain and storms, with 52 occurring in NSW and 28 in Queensland. <h2>What about for bushfires?</h2> Over the ten-year period studied, there were 894 hospitalisations and 65 deaths related to bushfires. Bushfire-related injury hospitalisations and deaths peaked in 2019–20, an El Niño year with 174 hospitalisations and 35 deaths. The two most common injuries that result from bushfires are smoke inhalation and burns. During the 2019–20 bushfires, in the week beginning 5 January 2020 there were 1,100 more respiratory hospitalisations than the previous five-year average, an 11% increase. The greatest increase in the hospitalisation rate for burns was 30% in the week beginning December 15 2019 — 0.8 per 100,000 persons (about 210 hospitalisations), compared with the previous 5-year average of 0.6 per 100,000 (an average of 155 hospitalisations). <h2>Some people are particularly vulnerable</h2> Anyone can be affected by extreme weather-related injuries but some population groups are more at risk than others. This includes older people, children, people with disabilities, those with pre-existing or chronic health conditions, outdoor workers, and those with greater <a href="https://www.mdpi.com/2071-1050/15/1/813">socioeconomic disadvantage</a>. People in these groups may have reduced capacity to avoid or reduce the health impacts of extreme weather conditions, for example older people taking medication may be less able to regulate their body temperature. “Thermal inequity” includes people living in poor quality housing who have difficulty accessing adequate heating and cooling. For heat-related injuries between 2019–20 and 2021–22, people aged 65 and over were the most commonly admitted to hospital, followed by people aged 25–44. Across age groups, men had higher numbers of heat related injury hospitalisations than women. This difference was most notable among those aged 25-44 and 45-64 years, where over twice as many men were hospitalised due to extreme heat as women. <h2>We still don’t have a full picture</h2> The AIHW data only includes injuries which were serious enough for patients to be admitted to hospital; it doesn’t include cases where patients treated in an emergency department and sent home without being admitted. It includes injuries that were directly attributable to weather-related events but does not include injuries that were indirectly related. For example, it doesn’t include injuries from road traffic accidents that occur due to wet weather, since the primary cause of injury would be recorded as “transport”. Improved surveillance of weather-related injuries could help the health system and the community better prepare for responding to extreme weather conditions. For example, better data aids communities in predicting what resources will be needed during periods of extreme weather. A more complete picture of injuries during weather events could also be used to inform people of actions they can take to protect their own health. Given a predicted hot summer, this could be a matter of life or death. This article was co-authored by Sarah Ahmed and Heather Swanston from the Injuries and System Surveillance Unit at the Australian Institute of Health and Welfare.<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/216440/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/amy-peden-1136424">Amy Peden</a>, NHMRC Research Fellow, School of Population Health & co-founder UNSW Beach Safety Research Group, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> Image credits: Getty Images 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/extreme-weather-is-landing-more-australians-in-hospital-and-heat-is-the-biggest-culprit-216440">original article</a>.

Caring

The “unlikely culprit” worsening lung disease unequally

Bronchiectasis (bron-kee-ek-tah-sis) is a chronic lung disease caused by widening of the airways in the lungs. As well as making breathing more difficult and coughing more common, it can lead to repeated flare-ups of lung infections. An international team of researchers based in Singapore has identified a bacteria, previously thought harmless in the lungs, that can be responsible for bronchiectasis flare-ups. According to their paper in Cell Host & Microbe, Neisseria bacteria, and specifically the species Neisseria subflava, worsens bronchiectasis. Neisseria are known to cause meningitis and gonorrhoea, but while they’d been found in lungs, they’ve previously not been thought to cause infections. “This discovery is significant because it can change how we treat our bronchiectasis patients with this bacterium,” says senior author Professor Sanjay Chotirmall, a researcher from the Lee Kong Chian School of Medicine at Nanyang Technical University, Singapore. “Doctors will now need to think about Neisseria as a potential ‘culprit’ in patients who are worsening despite treatment, and to conduct tests to identify those who may be harbouring this type of bacteria in their lungs.” While it affects people of every age and ethnicity, bronchiectasis prevalence increases as age does, and it’s up to four times more common among Asian people than white or black people. “We hope that early identification will lead to personalised therapy, and consequently, better disease outcomes for Asian patients with this devastating disease,” Chotirmall says. The researchers examined the lung microbiomes of 225 bronchiectasis patients from Singapore, Kuala Lumpur, and Dundee, in Scotland. They found that Neisseria subflava “dominated” the microbiome of Asian patients with worsening conditions. They then tested this bacteria in cell cultures and mice, showing that it caused cell disruption and thus inflammation and immune disfunction in lungs. “It is encouraging to see that we have made headway in identifying the Neisseria bacteria species as the cause of worsening bronchiectasis, the unlikely culprit that was originally not considered to be a threat,” says co-author Professor Wang De Yun, from the National University of Singapore’s Yong Loo Lin School of Medicine. “This comes as a strong reminder that we should not be too complacent when it comes to doing research and exercise more proactiveness in exploring various possibilities, as every seemingly innocent element could be a source of threat to our bodies and overall health.” This article originally appeared on <a href="https://cosmosmagazine.com/health/bronchiectasis-lung-disease-bacteria/" target="_blank" rel="noopener">cosmosmagazine.com</a> and was written by Ellen Phiddian. Image: Shutterstock

Body

Sneezing with hay fever? Native plants aren’t usually the culprit

Hay fever is a downside of springtime around the world. As temperatures increase, plant growth resumes and flowers start appearing. But while native flowering plants such as wattle often get the blame when the seasonal sneezes strike, hay fever in Australia is typically caused by introduced plant species often pollinated by the wind. <h2>A closer look at pollen</h2> Pollen grains are the tiny reproductive structures that move genetic material between flower parts, individual flowers on the same plant or a nearby member of the same species. They are typically lightweight structures easily carried on wind currents or are sticky and picked up in clumps on the feathers of a honeyeater or the fur of a fruit bat or possum. Hay fever is when the human immune system overreacts to allergens in the air. It is not only caused by pollen grains but fungal spores, non-flowering plant spores, mites and even pet hair. The classic symptoms of hay fever are sneezing, runny noses, red, itchy, and watery eyes, swelling around the eyes and scratchy ears and throat. The problem with pollen grains is when they land on the skin around our eyes, in our nose and mouth, the proteins found in the wall of these tiny structures leak out and are recognised as foreign by the body and trigger a reaction from the immune system. <h2>So what plants are the worst culprits for causing hay fever?</h2> Grasses, trees, and herbaceous weeds such as plantain are the main problem species as their pollen is usually scattered by wind. In Australia, the main grass offenders are exotic species including rye grass and couch grass (a commonly used lawn species). Weed species that cause hay fever problems include introduced ragweed, Paterson’s curse, parthenium weed and plantain. The <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5102629/" target="_blank" rel="noopener">problematic tree species</a> are also exotic in origin and include liquid amber, Chinese elm, maple, cypress, ash, birch, poplar, and plane trees. Although there are some native plants that have wind-spread pollen such as she-oaks and white cypress pine, and which can induce hay fever, these species are exceptional in the Australian flora. Many Australian plants are not wind pollinated and <a href="https://blog.publish.csiro.au/austpollinatorweek/" target="_blank" rel="noopener">use animals</a> to move their clumped pollen around. For example, yellow-coloured flowers such as wattles and peas are pollinated by insect such as bees. Red- and orange-coloured flowers are usually visited by birds such as honeyeaters. Large, dull-coloured flowers with copious nectar (the reward for pollination) are visited by nocturnal mammals including bats and possums. Obviously Australian plant pollen can still potentially cause the immune system to overreact, but these structures are less likely to reach the mucous membranes of humans. <h2>What can we do to prevent hay fever attacks at this time of the year?</h2> With all of this in mind, here are some strategies to prevent the affects of hay fever: <ol> <li>stay inside and keep the house closed up on warm, windy days when more pollen is in the air</li> <li>if you must go outside, wear sunglasses and a face mask</li> <li>when you return indoors gently rinse (and don’t rub) your eyes with running water, change your clothes and shower to remove pollen grains from hair and skin</li> <li>try to avoid mowing the lawn in spring particularly when grasses are in flower (the multi-pronged spiked flowers of couch grass are distinctive)</li> <li>when working in the garden, wear gloves and facial coverings particularly when handling flowers consider converting your garden to a native one. Grevilleas are a great alternative to rose bushes. Coastal rosemary are a fabulous native replacement for lavender. Why not replace your liquid amber tree with a fast growing, evergreen and low-allergenic lilly pilly tree?</li> </ol> <h2>If you do suffer a hay fever attack</h2> Sometimes even with our best efforts, or if it’s not always possible to stay at home, hay fever can still creep up on us. If this happens: <ul> <li>antihistamines will reduce sneezing and itching symptoms</li> <li>corticosteroid nasal sprays are very effective at reducing inflammation and clearing blocked noses</li> <li>decongestants provide quick and temporary relief by drying runny noses but should not be used by those with high blood pressure</li> <li>salt water is a good way to remove excessive mucous from the nasal passages.</li> </ul> Behavioural changes on warm, windy spring days are a good way of avoiding a hay fever attack. An awareness of the plants around us and their basic reproductive biology is also useful in preventing our immune systems from overreacting to pollen proteins that they are not used to encountering. This article first appeared on <a href="https://theconversation.com/sneezing-with-hay-fever-native-plants-arent-usually-the-culprit-190336" target="_blank" rel="noopener">The Conversation</a>. Image: Shutterstock

Body

Guess what's the biggest germ culprit at the airport?

You’re all packed for your overseas holiday and you’re doing a last-minute check before catching a taxi to the airport. Passport? Check. Travel insurance? Check. Hand sanitiser? Wait, what? Just one more thing to remember As if packing for a holiday is not stressful enough, now you have to make sure you don’t forget the hand sanitiser when you’re heading to the airport for your overseas trip. Here’s why. According to a new study published in the <a href="https://bmcinfectdis.biomedcentral.com/track/pdf/10.1186/s12879-018-3150-5">BMC Infectious Diseases</a> journal by experts from the University of Nottingham in the UK and the Finnish National Institute for Health and Welfare, the biggest culprit for spreading germs in airports is the plastic tray where you place your personal items as you pass through security checks. Yes, you read that right. Your phone, wallet, keys, laptop, jacket and various other accoutrements have to share a snug, germ-filled receptacle. The team came to this conclusion after swabbing different surfaces at Helsinki-Vantaa airport in Helsinki, Finland, during the winter of 2016. The most common virus detected in the study was the rhinovirus, the cause of the common cold. There were also traces of the Influenza A virus. Other germ-filled culprits include shop payment terminals, staircase rails, passport checking counters, children’s play areas and even in the air. One of the study’s authors advises that “people can help minimise contagion by hygienic hand washing and coughing into a handkerchief, tissue or sleeve at all times but especially in public places.” Or you can keep a travel-size bottle of hand sanitiser handy and clean your hands every time you touch common surfaces. Just remember, if you’re bringing a bottle in your carry-on luggage, make sure you adhere to the rules on liquids and gels – the maximum size for each container is 100ml. Written by Siti Rohani. This article first appeared in <a href="http://www.readersdigest.com.au/healthsmart/conditions/flu/guess-whats-biggest-germ-culprit-airport">Reader’s Digest</a>. For more of what you love from the world’s best-loved magazine, <a href="https://www.isubscribe.com.au/Readers-Digest-Magazine-Subscription.cfm">here’s our best subscription offer</a>. <img style="width: 100px !important; height: 100px !important;" src="https://oversixtydev.blob.core.windows.net/media/7820640/1.png" alt="" data-udi="umb://media/f30947086c8e47b89cb076eb5bb9b3e2" />

International Travel

Top 5 culprits derailing your diet

How would you describe your relationship to food? Are you controlled and strong-willed? Or do you give in to the first temptation that presents itself? Since we’re all so different when it comes to food and cravings, it makes sense to understand what’s going on in our brains before we get too caught up in what we’re putting in our mouths. That’s where the CSIRO’s new “Diet Type” quiz comes in. “For anyone who has found eating to lose weight difficult, your personal Diet Type, daily habits and lifestyle factors could provide the answer to why some weight loss methods haven’t worked for you in the past,” CSIRO Behavioural Scientist Dr Sinead Golley said. “If you’re frustrated by unsuccessful weight loss attempts, having a better understanding of your personal triggers and diet patterns can be the crucial piece of the puzzle.” Essentially, CSIRO researchers looked at five of the most common diet personality types among Australians in the hope that we can develop a healthier relationship with food. There’s the Foodie (generally healthier, loves trying new foods), the Craver (more prone to obesity, struggles to resist temptation), the Freewheeler (also prone to obesity thanks to their spontaneous, impulsive eating habits), the Socialiser (more common in older people, food and alcohol are a big part of their social life) and the Thinker (the most common type, especially among women, who over-analyse their progress and set unrealistic goals). Each “type” has their own strengths and downfalls, however. “One in five Cravers have tried to lose weight more than 25 times and they say that chocolate and confectionery are the biggest problem foods to resist,” explains Dr Golley. “On the other hand, people with the most common diet personality type – known as the ‘Thinker’ – tend to have high expectations and tend to be perfectionists, giving up when things get challenging.” There were also differences between the generations. “Baby boomers and the older, silent generation (aged 71 years and over) were more likely to be Socialisers and Foodies – suggesting lifestyle and social connections influence a person’s eating patterns at different stages of life – while millennials and Gen X were more likely to be Cravers, Thinkers and Freewheelers. “We also found younger people commonly used fitness trackers and apps to lose weight, while older generations turned to diet books and support groups.” Give it a try for yourself <a href="https://my.totalwellbeingdiet.com/diet-type" target="_blank">here</a> and tell us in the comments below, how accurately did it describe you?

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Extreme weather is landing more Australians in hospital – and heat is the biggest culprit

The “unlikely culprit” worsening lung disease unequally

Sneezing with hay fever? Native plants aren’t usually the culprit

Guess what's the biggest germ culprit at the airport?

Top 5 culprits derailing your diet

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