Children can be more vulnerable in the heat. Here’s how to protect them this summer
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Extreme heat is increasingly common in Australia and around the world and besides making us uncomfortable, it can harm our health. For example, exposure to extreme heat can exacerbate existing medical conditions, or cause problems such as heat stroke.
Due to a combination of physiology and behaviour, children are potentially more vulnerable to severe heat-related illness such as heat stroke or heat exhaustion.
But these are not the only heat-related health issues children might experience on a very hot day. In a new study, we looked at emergency department (ED) visits and unplanned hospital admissions among children in New South Wales on heatwave days.
We found a significant increase in children attending hospital compared to milder days – with a range of health issues.
Why are children more vulnerable in the heat?
Sweating is the main way we lose heat from our bodies and cool down.
Children have a greater skin surface area to body mass ratio, which can be an advantage for sweating – they can lose more heat through evaporation for a given body mass. But this also means children can lose fluids and electrolytes faster through sweating, theoretically making them more susceptible to dehydration.
Meanwhile, younger children, particularly babies, can’t sweat as much as older children and adults. This means they can’t cool down as effectively.
Children in general also tend to engage in more outdoor physical activity, which might see them more exposed to very hot temperatures.
Further, children may be less in-tune to the signals their body is giving them that they’re overheating, such as excessive sweating or red skin. So they might not stop and cool down when they need to. Young children especially may not recognise the early signs of heat stress or be able to express discomfort.
Our study
We wanted to examine children’s exposure to extreme heat stress and the associated risks to their health.
We measured extreme heat as “heatwave days”, at least two consecutive days with a daily maximum temperature above the 95th percentile for the relevant area on a universal thermal climate index. This ranged from 27°C to 45°C depending on the area.
We assessed health outcomes by looking at ED visits and unplanned hospital admissions among children aged 0–18 years from NSW between 2000 and 2020. This totalled around 8.2 million ED visits and 1.4 million hospital admissions.
We found hospital admissions for heat-related illness were 104% more likely on heatwave days compared to non-heatwave days, and ED visits were 78% more likely. Heat-related illness includes a spectrum of disorders from minor conditions such as dehydration to life-threatening conditions such as heat stroke.
But heat-related illness wasn’t the only condition that increased on heatwave days. There was also an increase in childhood infections, particularly infectious enteritis possibly related to food poisoning (up 6% for ED visits and 17% for hospital admissions), ear infections (up 30% for ED visits and 3% for hospital admissions), and skin and soft tissue infections (up 6% for ED visits and 4% for hospital admissions).
We know many infectious diseases are highly seasonal. Some, like the flu, peak in winter. But heat and humidity increase the risk of certain infections caused by bacterial, viral and fungal pathogens.
For example, warmer weather and higher humidity can increase the survival of bacteria, such as Salmonella, on foods, which increases the risk of food poisoning.
Hot weather can also increase the risk of ear infections. Children may be at greater risk during hot weather because they often swim or play at the beach or pool. Water can stay in the ear after swimming and a moist environment in the ear canal can cause growth of pathogens leading to ear infections.
Which children are most vulnerable?
During heatwaves, we found infants aged under one were at increased risk of ED visits and hospital admission for any reason compared to older children. This is not surprising, because babies can’t regulate their body temperature effectively and are reliant on their caregivers to keep them cool.
Our study also found children from the most disadvantaged areas were more vulnerable to heat-related illness on heatwave days. Although we don’t know exactly why, we hypothesised families from poorer areas might have limited access to air-conditioning and could be more likely to live in hotter neighbourhoods.
Keeping kids cool: tips for parents
The highest levels of heat exposure on hot days for young children is usually when they’re taken outside in prams and strollers. To protect their children from direct sunlight, parents often instinctively cover their stroller with a cloth such as a muslin.
However, a recent study from our group showed this actually increases temperatures inside a stroller to as much as 3–4˚C higher than outside.
But if the cloth is wet with water, and a small fan is used to circulate the air close to the child, stroller temperatures can be 4–5˚C lower than outside. Wetting the cloth every 15–20 minutes (for example, with a spray bottle) maintains the cooling effect.
When young children are not in a stroller, and for older children, there are a few things to consider to keep them cool and safe.
Remember temperatures reported on weather forecasts are measured in the shade, and temperatures in the sun can be up to 15˚C higher. So sticking to the shade as much as possible is important.
Exercise generates heat inside the body, so activities should be shortened, or rescheduled to cooler times of the day.
Sunscreen and hats are important when outdoors, but neither are especially effective for keeping cool. Spraying water on the child’s skin – not just the face but arms, legs and even the torso if possible – can help. Wetting their hats is another idea.
Proper hydration on hot days is also essential. Regular water breaks, including offering water before, during and after activity, is important. Offering foods with high water content such as watermelon and orange can help with hydration too.
Wen-Qiang He, Research Fellow in Biostatistics and Epidemiology, Faculty of Medicine and Health, University of Sydney; James Smallcombe, Post-doctoral Research Associate, Faculty of Medicine and Health, University of Sydney; Natasha Nassar, Professor of Paediatric and Perinatal Epidemiology and Chair in Translational Childhood Medicine, University of Sydney, and Ollie Jay, Professor of Heat & Health; Director of Heat & Health Research Incubator; Director of Thermal Ergonomics Laboratory, University of Sydney
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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What Your Doctor May Not Tell You About Fibromyalgia – by Dr. R. Paul St Amand
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The core claim of the book is that guaifenesin, an over-the-counter expectorant (with a good safety profile) usually taken to treat a chesty cough, is absorbed from the gastrointestinal tract, and is rapidly metabolized and excreted into the urine—and on the way, it lowers uric acid levels, which is a big deal for fibromyalgia sufferers.
He goes on to explain how the guaifenesin, by a similar biochemical mechanism, additionally facilitates the removal of other excess secretions that are associated with fibromyalgia.
The science for all this is… Compelling and logical, while not being nearly so well-established yet as his confidence would have us believe.
In other words, he could be completely wrong, because adequate testing has not yet been done. However, he also could be right; scientific knowledge is, by the very reality of scientific method, always a step behind hypothesis and theory (in that order).
Meanwhile, there are certainly many glowing testimonials from fibromyalgia sufferers, saying that this helped a lot.
Bottom line: if you have fibromyalgia and do not mind trying a relatively clinically untested (yet logical and anecdotally successful) protocol to lessen then symptoms (allegedly, to zero), then this book will guide you through that and tell you everything to watch out for.
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The Life-Changing Manga Of Tidying Up – by Marie Kondo
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Everyone knows the slogan “does this spark joy?”, but there’s a whole method to the magic that goes far beyond that. It spans all manner of things from the over-arching strategy of taking on a house-sized tidying project, to practical little tips like “store these things this way instead; now they’re safe, tidy and accessible—and look good too!”.
You may be wondering: why are we reviewing this book instead of the much more famous “The Life-Changing Magic of Tidying Up”?
It’s simple: here at 10almonds, we like things to be super simple and easy to digest.
This book is smaller, simpler, and more digestible than her more famous book, without sacrificing content. And you know what? We held it in our hands and it sparked joy
Bottom line is: it’s useful, it’s beautiful, it will change your life (and your underwear drawer).
PS: this 10almonds team-member gifted a copy to her 12-year-old son. He implemented it the same day, unbidden. Magic indeed!
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Artichoke vs Cabbage – Which is Healthier?
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Our Verdict
When comparing artichoke to cabbage, we picked the artichoke.
Why?
Looking at the macros first of all, artichoke has more than 2x the protein; it also has nearly 2x the carbs, but to more than counterbalance that, it has more than 2x the fiber. An easy win for artichoke in the macros category.
In the category of vitamins, both are very respectable; artichoke has more of vitamins B1, B2, B3, B5, B9, E, and choline, while cabbage has more of vitamins A, C, and K. Superficially, that’s a 7:3 win for artichoke, but the margins of difference for artichoke’s vitamins are very small (meaning cabbage is hot on its heels for those vitamins), whereas cabbage’s A, C, and K are with big margins of difference (3–7x more), and arguably those vitamins are higher priority in the sense that B-vitamins of various kinds are found in most foods, whereas A, C, and K aren’t, and while E isn’t either, artichoke had a tiny margin of difference for that. All in all, we’re calling this category a tie, as an equally fair argument could be made for either vegetable here.
When it comes to minerals, there’s a much clearer winner: artichoke has a lot more copper, iron, magnesium, manganese, phosphorus, potassium, and zinc, while cabbage has a tiny bit more selenium. The two vegetables are equal on calcium.
Adding up two clear artichoke wins and a tie, makes for an overall clear win for artichoke. Of course, enjoy both though; diversity is almost always best of all!
Want to learn more?
You might like to read:
What’s Your Plant Diversity Score?
Take care!
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Top 10 Early Warning Signs Of Dementia
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What’s a harmless momentary mind-blank, and what’s a potential warning sign of dementia? Dementia Careblazers, a dementia care organization, has input:
The signs
With the caveat that this is a list of potential warning signs, not a diagnostic tool, the 10 signs are:
- Memory loss: e.g. forgetting important or well-learned information, such as one’s home address
- Challenges in planning or solving problems: e.g. difficulty with tasks such as paying bills (for organizational rather than financial reasons), following recipes, or managing medications
- Difficulty completing familiar tasks: e.g. trouble remembering rules of a familiar game, or directions to a familiar place
- Confusion with place or time: e.g. forgetting where one is, or making mistakes with the date, season, or other time-related details. Note that anyone can be momentarily unsure of today’s date, but if someone thinks it’s 1995, probably something wrong is not quite right. Similarly, being wrong about who is the current national leader is often used as a test, too—assuming countries with enough political stability to not have five different national leaders in the past four years, including one who did not outlast a lettuce *side-eyeing the UK*
- Trouble understanding visual images and spatial relationships: e.g. increased clumsiness, difficulty parking, or bumping into objects
- New problems with speaking or writing: e.g. losing track in conversations, or struggling to find the right words
- Misplacing things: e.g. losing items and being unable to retrace one’s steps to find them
- Decreased or poor judgment: e.g. falling for scams, giving out too much information or money without investigating appropriately first
- Withdrawal from social activities or hobbies: e.g. losing interest in activities one used to enjoy or avoiding social interactions
- Changes in mood and personality: e.g. increased irritability, anxiety, or other noticeable changes in behavior and personality
For more information on each of these, enjoy:
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Want to learn more?
You might also like to read:
Dementia: Spot The Signs (Because None Of Us Are Immune)
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Dopamine Nation – by Dr. Anna Lembke
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We live in an age of abundance, though it often doesn’t feel like it. Some of that is due to artificial scarcity, but a lot of it is due to effectively whiting out our dopamine circuitry through chronic overuse.
Psychiatrist Dr. Anna Lembke explores the neurophysiology of pleasure and pain, and how each can (and does) lead to the other. Is the answer to lead a life of extreme neutrality? Not quite.
Rather, simply by being more mindful of how we seek each (yes, both pleasure and pain), we can leverage our neurophysiology to live a better, healthier life—and break/avoid compulsive habits, while we’re at it.
That said, the book itself is quite compelling reading, but as Dr. Lembke shows us, that certainly doesn’t have to be a bad thing.
Bottom line: if you sometimes find yourself restlessly cycling through the same few apps (or TV channels) looking for dopamine that you’re not going to find there, this is the book for you.
Click here to check out Dopamine Nation, and get a handle on yours!
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Passion Fruit vs Persimmon – Which is Healthier?
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Our Verdict
When comparing passion fruit to persimmon, we picked the passion fruit.
Why?
You may be wondering: “what is this fruit passionate about?” and the answer is: delivering nutrients of many kinds!
Looking at the macros first, passion fruit has a little more protein and a lot more fiber, while persimmon has more carbs. This means that while persimmon’s glycemic index isn’t bad, passion fruit’s glycemic index is a lot lower.
In terms of vitamins, passion fruit has a lot more of vitamins A, B2, B3, B6, B9, E, K, and choline, while persimmon has more vitamin C. For the record passion fruit is also a good source of vitamin C, with a cup of passion fruit already giving a day’s daily dose of vitamin C, but persimmon gives twice that. Still, that’s a 8:1 win for passion fruit.
When it comes to minerals, passion fruit has more copper, magnesium, phosphorus, potassium, selenium, and zinc, while persimmon has more calcium and iron, meaning a 6:2 win for passion fruit.
Adding up the three convincing individual victories shows a clear overall win for passion fruit.
Enjoy (passionately, even)!
Want to learn more?
You might like to read:
- Glycemic Index vs Glycemic Load vs Insulin Index
- Which Sugars Are Healthier, And Which Are Just The Same?
- Why You’re Probably Not Getting Enough Fiber (And How To Fix It)
Take care!
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