We’re the ‘allergy capital of the world’. But we don’t know why food allergies are so common in Australian children
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Australia has often been called the “allergy capital of the world”.
An estimated one in ten Australian children develop a food allergy in their first 12 months of life. Research has previously suggested food allergies are more common in infants in Australia than infants living in Europe, the United States or Asia.
So why are food allergies so common in Australia? We don’t know exactly – but local researchers are making progress in understanding childhood allergies all the time.
What causes food allergies?
There are many different types of reactions to foods. When we refer to food allergies in this article, we’re talking about something called IgE-mediated food allergy. This type of allergy is caused by an immune response to a particular food.
Reactions can occur within minutes of eating the food and may include swelling of the face, lips or eyes, “hives” or welts on the skin, and vomiting. Signs of a severe allergic reaction (anaphylaxis) include difficulty breathing, swelling of the tongue, swelling in the throat, wheeze or persistent cough, difficulty talking or a hoarse voice, and persistent dizziness or collapse.
Recent results from Australia’s large, long-running food allergy study, HealthNuts, show one in ten one-year-olds have a food allergy, while around six in 100 children have a food allergy at age ten.
In Australia, the most common allergy-causing foods include eggs, peanuts, cow’s milk, shellfish (for example, prawn and lobster), fish, tree nuts (for example, walnuts and cashews), soybeans and wheat.
Allergies to foods like eggs, peanuts and cow’s milk often present for the first time in infancy, while allergies to fish and shellfish may be more common later in life. While most children will outgrow their allergies to eggs and milk, allergy to peanuts is more likely to be lifelong.
Findings from HealthNuts showed around three in ten children grew out of their peanut allergy by age six, compared to nine in ten children with an allergy to egg.
Are food allergies becoming more common?
Food allergies seem to have become more common in many countries around the world over recent decades. The exact timing of this increase is not clear, because in most countries food allergies were not well measured 40 or 50 years ago.
We don’t know exactly why food allergies are so common in Australia, or why we’re seeing a rise around the world, despite extensive research.
But possible reasons for rising allergies around the world include changes in the diets of mothers and infants and increasing sanitisation, leading to fewer infections as well as less exposure to “good” bacteria. In Australia, factors such as increasing vitamin D deficiency among infants and high levels of migration to the country could play a role.
In several Australian studies, children born in Australia to parents who were born in Asia have higher rates of food allergies compared to non-Asian children. On the other hand, children who were born in Asia and later migrated to Australia appear to have a lower risk of nut allergies.
Meanwhile, studies have shown that having pet dogs and siblings as a young child may reduce the risk of food allergies. This might be because having pet dogs and siblings increases contact with a range of bacteria and other organisms.
This evidence suggests that both genetics and environment play a role in the development of food allergies.
We also know that infants with eczema are more likely to develop a food allergy, and trials are underway to see whether this link can be broken.
Can I do anything to prevent food allergies in my kids?
One of the questions we are asked most often by parents is “can we do anything to prevent food allergies?”.
We now know introducing peanuts and eggs from around six months of age makes it less likely that an infant will develop an allergy to these foods. The Australasian Society of Clinical Immunology and Allergy introduced guidelines recommending giving common allergy-causing foods including peanut and egg in the first year of life in 2016.
Our research has shown this advice had excellent uptake and may have slowed the rise in food allergies in Australia. There was no increase in peanut allergies between 2007–11 to 2018–19.
Introducing other common allergy-causing foods in the first year of life may also be helpful, although the evidence for this is not as strong compared with peanuts and eggs.
What next?
Unfortunately, some infants will develop food allergies even when the relevant foods are introduced in the first year of life. Managing food allergies can be a significant burden for children and families.
Several Australian trials are currently underway testing new strategies to prevent food allergies. A large trial, soon to be completed, is testing whether vitamin D supplements in infants reduce the risk of food allergies.
Another trial is testing whether the amount of eggs and peanuts a mother eats during pregnancy and breastfeeding has an influence on whether or not her baby will develop food allergies.
For most people with food allergies, avoidance of their known allergens remains the standard of care. Oral immunotherapy, which involves gradually increasing amounts of food allergen given under medical supervision, is beginning to be offered in some facilities around Australia. However, current oral immunotherapy methods have potential side effects (including allergic reactions), can involve high time commitment and cost, and don’t cure food allergies.
There is hope on the horizon for new food allergy treatments. Multiple clinical trials are underway around Australia aiming to develop safer and more effective treatments for people with food allergies.
Jennifer Koplin, Group Leader, Childhood Allergy & Epidemiology, The University of Queensland and Desalegn Markos Shifti, Postdoctoral Research Fellow, Child Health Research Centre, Faculty of Medicine, The University of Queensland
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Laugh Often, To Laugh Longest!
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Putting The Abs Into Absurdity
We’ve talked before about the health benefits of a broadly positive outlook on life:
Optimism Seriously Increases Longevity!
…and we’re very serious about it, but that’s about optimistic life views in general, and today we’re about not just keeping good humor in questionable circumstances, but actively finding good humor in the those moments—even when the moments in question might not be generally described as good!
After all, laughter really can be the best medicine, for example:
From the roots
First a quick recap on de-toothing the psychological aspect of threats, no matter how menacing they may be:
Hello, Emotions: Time For Radical Acceptance!
…which we can then take a step further:
What’s The Worst That Could Happen?
Choose your frame
Do you remember when that hacker hacked and publicized the US Federal no-fly list, after already hacking a nationwide cloud-based security camera company, getting access to more than 150,000 companies’ and private individuals’ security cameras, amongst various other cyber crimes, mostly various kinds of fraud and data theft?
Imagine how she (age 21) must have felt, when being indicted. What do you suppose this hacker had to say for itself under such circumstances?
❝congress is investigating now 🙂
but i stay silly :3 ❞
…the latter half of which, usually rendered “but I stay silly” or “but we stay silly” has since entered popular Gen-Z parlance, usually after expressing some negative thing, often in a state of powerlessness.
Which is an important life skill if powerlessness is something that is often likely.
It’s important for many Gen-Zs with negligible life prospects economically; it’s equally important for 60-somethings getting cancer diagnoses (statistically the most likely decade to find out one has cancer, by the way), and many other kinds of people younger, older, and in between.
Because at the end of the day, we all start powerless and we all end powerless.
Learned helplessness (two kinds)
In psychology, “learned helplessness” occurs when a person or creature gives up after learning that all and any attempts to resist a Bad Thing™ fail, perhaps even badly. A lab rat may just shut down and sit there getting electroshocked, for example. A person subjected to abuse may stop trying to improve their situation, and just go with the path of least resistance.
But, there’s another kind, wherein someone in a position of absolute powerlessness not only makes their peace with that, but also, decides that the one thing the outside world can’t control, is how they take it. Like the hacker we mentioned earlier.
Sometimes the gallows humor is even more literal, laughing at one’s own impending death. Not as a matter of bravado, but genuinely seeing the funny side.
But how?
Unfortunately, fortunately
The trick here is to “find a silver lining” that is nowhere near enough to compensate for the bad thing—and it may even be worse! But that’s fine:
“Unfortunately, I didn’t have time to do the dishes before leaving for my vacation. Fortunately, I also forgot to turn the oven off, so the house burning down covered up my messy kitchen”
Writer’s personal less drastic example: today I set my espresso machine to press me an espresso; it doesn’t have an auto-off and I got distracted and it overflowed everywhere; my immediate reaction was “Oh! I have been blessed with an abundance of coffee!”
This kind of silly little thing, on a daily basis, builds a very solid habit for life that allows one to see the funny side in even the most absurd situations, even matters of life and death (can confirm: been there enough times personally—so far so good, still alive to find the remembered absurdity silly).
The point is not to genuinely value the “silver lining”, because half the time it isn’t even one, really, and it is useless to pretend, in seriousness.
But to pretend in silliness? Now we’re onto something, and the real benefit is in the laughs we had along the way.
Because those worst moments? Are probably when we need it the most, so it’s good to get some practice in!
Want more ways to find the funny and make it a life habit?
We reviewed a good book recently:
The Humor Habit: Rewire Your Brain To Stress Less, Laugh More, And Achieve More’er – by Paul Osincup
Stay silly!
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Stop Using The Wrong Hairbrush For Your Hair Type
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When you brush your hair, you’re either making it healthier or damaging it, depending on what you’re using and how. To avoid pulling your hair out, and to enjoy healthy hair of whatever kind you have and whatever length suits you, it pays to know a little about different brushes, and the different techniques involved.
Head-to-head
Brush shapes and sizes are designed to achieve different effects in hair, not just for decoration. For example:
- Rat tail combs are excellent for parting and sectioning hair with clean lines. The rat tail part is actually more important than the comb part.
- Regular combs are multipurpose but best for use with flat irons, ensuring straighter hair for a longer time.
- Wide-tooth combs should not be used for detangling as they can cause breakage; instead, use a proper detangling brush. Speaking of detangling…
- Detangling brushes are essential for daily use. Whichever you use, start brushing from the bottom to prevent tangles from stacking and worsening. As for kinds of detangling brush:
- The “Tangle Teaser” is a good beginner option, but it may not detangle well for thicker hair.
- Wet Brush (this is a brand name, and is not about any inherent wetness) is the recommended detangling brush for most people. It can be used on wet or dry hair.
- Mason Pearson brush is a luxury detangling brush (see it here on Amazon) that works slightly more quickly and efficiently, but is expensive and not necessary for most people.
- Teasing brushes are for adding volume by backcombing—but require skill to prevent visible tangles. Best avoided for most people.
- Ceramic round brushes are the best for blow-drying, because they hold tension and help hair dry smoother and shinier.
- Blow-dryer brushes are great for easy blow-drying but should not be used on dry hair, to avoid damage.
- Denman brushes are for people with natural curls, enhancing curls without straightening them like a Wet brush would.
For more on all of these brushes, plus visual demonstrations, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Take care!
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How Are You, Really?
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How Are You, Really? The Free NHS Health Test
We took this surprisingly incisive 10-minute test from the UK’s famous National Health Service—the test is part of the “Better Health” programme, a free-to-all (yes, even those from/in other countries) initiative aimed at keeping people healthy enough to have less need of medical attention.
As one person who took the test wrote:
❝I didn’t expect that a government initiative would have me talking about how I need to keep myself going to be there for the people I love, let alone that a rapid-pace multiple-choice test would elicit these responses and give personalized replies in turn, but here we are❞
It goes beyond covering the usual bases, in that it also looks at what’s most important to you, and why, and what might keep you from doing the things you want/need to do for your health, AND how those obstacles can be overcome.
Pretty impressive for a 10-minute test!
Is Your Health Above Average Already? Take the Free 10-minute NHS test now!
How old are you, in your heart?
Poetic answers notwithstanding (this writer sometimes feels so old, and yet also much younger than she is), there’s a biological answer here, too.
Again free for the use of all*, here’s a heart age calculator.
*It is suitable for you if you are aged 30–95, and do not have a known complicating cardiovascular disease.
It will ask you your (UK) postcode; just leave that field blank if you’re not in the UK; it’ll be fine.
How Old Are You, In Your Heart? Take the Free 10-minute NHS test now!
(Neither test requires logging into anything, and they do not ask for your email address. The tests are right there on the page, and they give the answers right there on the page, immediately)
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Can I take antihistamines everyday? More than the recommended dose? What if I’m pregnant? Here’s what the research says
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Allergies happen when your immune system overreacts to a normally harmless substance like dust or pollen. Hay fever, hives and anaphylaxis are all types of allergic reactions.
Many of those affected reach quickly for antihistamines to treat mild to moderate allergies (though adrenaline, not antihistamines, should always be used to treat anaphylaxis).
If you’re using oral antihistamines very often, you might have wondered if it’s OK to keep relying on antihistamines to control symptoms of allergies. The good news is there’s no research evidence to suggest regular, long-term use of modern antihistamines is a problem.
But while they’re good at targeting the early symptoms of a mild to moderate allergic reaction (sneezing, for example), oral antihistamines aren’t as effective as steroid nose sprays for managing hay fever. This is because nasal steroid sprays target the underlying inflammation of hay fever, not just the symptoms.
Here are the top six antihistamines myths – busted.
Andrea Piacquadio/Pexels Myth 1. Oral antihistamines are the best way to control hay fever symptoms
Wrong. In fact, the recommended first line medical treatment for most patients with moderate to severe hay fever is intranasal steroids. This might include steroid nose sprays (ask your doctor or pharmacist if you’d like to know more).
Studies have shown intranasal steroids relieve hay fever symptoms better than antihistamine tablets or syrups.
To be effective, nasal steroids need to be used regularly, and importantly, with the correct technique.
In Australia, you can buy intranasal steroids without a doctor’s script at your pharmacy. They work well to relieve a blocked nose and itchy, watery eyes, as well as improve chronic nasal blockage (however, antihistamine tablets or syrups do not improve chronic nasal blockage).
Some newer nose sprays contain both steroids and antihistamines. These can provide more rapid and comprehensive relief from hay fever symptoms than just oral antihistamines or intranasal steroids alone. But patients need to keep using them regularly for between two and four weeks to yield the maximum effect.
For people with seasonal allergic rhinitis (hayfever), it may be best to start using intranasal steroids a few weeks before the pollen season in your regions hits. Taking an antihistamine tablet as well can help.
Antihistamine eye drops work better than oral antihistamines to relieve acutely itchy eyes (allergic conjunctivitis).
Myth 2. My body will ‘get used to’ antihistamines
Some believe this myth so strongly they may switch antihistamines. But there’s no scientific reason to swap antihistamines if the one you’re using is working for you. Studies show antihistamines continue to work even after six months of sustained use.
Myth 3. Long-term antihistamine use is dangerous
There are two main types of antihistamines – first-generation and second-generation.
First-generation antihistamines, such as chlorphenamine or promethazine, are short-acting. Side effects include drowsiness, dry mouth and blurred vision. You shouldn’t drive or operate machinery if you are taking them, or mix them with alcohol or other medications.
Most doctors no longer recommend first-generation antihistamines. The risks outweigh the benefits.
The newer second-generation antihistamines, such as cetirizine, fexofenadine, or loratadine, have been extensively studied in clinical trials. They are generally non-sedating and have very few side effects. Interactions with other medications appear to be uncommon and they don’t interact badly with alcohol. They are longer acting, so can be taken once a day.
Although rare, some side effects (such as photosensitivity or stomach upset) can happen. At higher doses, cetirizine can make some people feel drowsy. However, research conducted over a period of six months showed taking second-generation antihistamines is safe and effective. Talk to your doctor or pharmacist if you’re concerned.
Allergies can make it hard to focus. Pexels/Edward Jenner Myth 4. Antihistamines aren’t safe for children or pregnant people
As long as it’s the second-generation antihistamine, it’s fine. You can buy child versions of second-generation antihistamines as syrups for kids under 12.
Though still used, some studies have shown certain first-generation antihistamines can impair childrens’ ability to learn and retain information.
Studies on second-generation antihistamines for children have found them to be safer and better than the first-generation drugs. They may even improve academic performance (perhaps by allowing kids who would otherwise be distracted by their allergy symptoms to focus). There’s no good evidence they stop working in children, even after long-term use.
For all these reasons, doctors say it’s better for children to use second-generation than first-generation antihistimines.
What about using antihistimines while you’re pregnant? One meta analysis of combined study data including over 200,000 women found no increase in fetal abnormalities.
Many doctors recommend the second-generation antihistamines loratadine or cetirizine for pregnant people. They have not been associated with any adverse pregnancy outcomes. Both can be used during breastfeeding, too.
Myth 5. It is unsafe to use higher than the recommended dose of antihistamines
Higher than standard doses of antihistamines can be safely used over extended periods of time for adults, if required.
But speak to your doctor first. These higher doses are generally recommended for a skin condition called chronic urticaria (a kind of chronic hives).
Myth 6. You can use antihistamines instead of adrenaline for anaphylaxis
No. Adrenaline (delivered via an epipen, for example) is always the first choice. Antihistamines don’t work fast enough, nor address all the problems caused by anaphylaxis.
Antihistamines may be used later on to calm any hives and itching, once the very serious and acute phase of anaphylaxis has been resolved.
In general, oral antihistamines are not the best treatment to control hay fever – you’re better off with steroid nose sprays. That said, second-generation oral antihistamines can be used to treat mild to moderate allergy symptoms safely on a regular basis over the long term.
Janet Davies, Respiratory Allergy Stream Co-chair, National Allergy Centre of Excellence; Professor and Head, Allergy Research Group, Queensland University of Technology; Connie Katelaris, Professor of Immunology and Allergy, Western Sydney University, and Joy Lee, Respiratory Allergy Stream member, National Allergy Centre of Excellence; Associate Professor, School of Public Health and Preventive Medicine, Monash University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Life Is in the Transitions – by Bruce Feiler
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Change happens. Sometimes, because we choose it. More often, we don’t get a choice.
Our bodies change; with time, with illness, with accident or incident, or even, sometimes, with effort. People in our lives change; they come, they go, they get sick, they die. Our working lives change; we get a job, we lose a job, we change jobs, our jobs change, we retire.
Whether we’re undergoing cancer treatment or a religious conversion, whether our families are growing or down to the last few standing, change is inescapable.
Our author makes the case that on average, we each undergo at least 5 major “lifequakes”; changes that shake our lives to the core. Sometimes one will come along when we’ve barely got back on our feet from the previous—if we have at all.
What, then, to do about this? We can’t stop change from occurring, and some changes aren’t easy to “roll with”. Feiler isn’t prescriptive about this, but rather, descriptive:
By looking at the stories of hundreds of people he interviewed for this book, he looks at how people pivoted on the spot (or picked up the pieces!) and made the best of their situation—or didn’t.
Bottom line: zooming out like this, looking at many people’s lives, can remind us that while we don’t get to choose what winds we get swept by, we at least get to choose how we set the sails. The examples of others, as this book gives, can help us make better decisions.
Click here to check out Life Is In The Transitions, and get conscious about how you handle yours!
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Who Screens The Sunscreens?
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We Screen The Sunscreens!
Yesterday, we asked you what your sunscreen policy was, and got a spread of answers. Apparently this one was quite polarizing!
One subscriber who voted for “Sunscreen is essential to protect us against skin aging and cancer” wrote:
❝My mom died of complications from melanoma, so we are vigilant about sun and sunscreen. We are a family of campers and hikers and gardeners—outdoors in all seasons—and we never burn❞
Our condolences with regard to your mom! Life is so precious, and when something like that happens, it tends to stick with us. We’re glad you and your family are taking care of yourselves.
Of the subscribers who voted for “I put some on if I think I might otherwise get sunburned”, about half wrote to express uncertainties:
- uncertainty about how safe it is, and
- uncertainty about how helpful it is
…so we’re going to tackle those questions in a moment. But what of those who voted for “Sunscreen is full of harmful chemicals that can cause cancer”?
Of those, only one wrote a message, which was to say one has to be very careful of what is in the formula.
Let’s take a look, then…
Sunscreen is full of harmful chemicals that can cause cancer: True or False?
False—according to current best science. Research is ongoing!
There are four main chemicals (found in most sunscreens) that people tend to worry about:
- Abobenzone
- Oxybenzone
- Octocrylene
- Ecamsule
Now, these two sound like four brands of rocket fuel, but then, dihydrogen monoxide (DHMO), which is also found in most sunscreens, sounds like a deadly toxin too. That’s water, by the way.
But what of these four chemicals? Well, as we say, research is ongoing, but we found a study that measured all four, to see how much got into the blood, and what adverse effects, if any, this caused.
We’ll skip to their conclusion:
❝In this preliminary study involving healthy volunteers, application of 4 commercially available sunscreens under maximal use conditions resulted in plasma concentrations that exceeded the threshold established by the FDA for potentially waiving some nonclinical toxicology studies for sunscreens. The systemic absorption of sunscreen ingredients supports the need for further studies to determine the clinical significance of these findings. These results do not indicate that individuals should refrain from the use of sunscreen.❞
Now, “exceeded the threshold established by the FDA for potentially waiving some nonclinical toxicology studies for sunscreens” sounds alarming, so why did they close with the words “These results do not indicate that individuals should refrain from the use of sunscreen”?
Let’s skip back up to a line from the results:
❝The most common adverse event was rash, which developed in 1 participant with each sunscreen.❞
This was most probably due to the oxybenzone, which can cause allergic skin reactions in some people.
Let us take a moment to remember the most common adverse event that occurs from not wearing sunscreen: sunburn!
You can read the full study here:
None of those ingredients have been found to be carcinogenic, even at the maximal blood plasma concentrations studied, from applications 4x/day to 75% of the body.
UVA rays, on the other hand, are absolutely very much known to cause cancer, and the effect is cumulative.
Sunscreen is essential to protect us against skin aging and cancer: True or False?
True, unequivocally, unless we live indoors and/or otherwise never go about under sunlight.
“But our ancestors—” lived under the same sun we do, and either used sunscreen or got advanced skin aging and cancer.
Sunscreen of times past ranged from mud to mineral lotions, but it’s pretty much always existed. Even non-human animals that have skin and don’t have fur or feathers, tend to take mud-baths in sunny parts of the world.
If you’d like to avoid oxybenzone and other chemicals, though, you might have your reasons. Maybe you’re allergic, or maybe you read that it’s a potential endocrine disruptor with estrogen-like and anti-androgenic properties that you don’t want.
There are other options, to include physical blockers containing zinc and titanium dioxide, which are generally recognized as safe and effective ingredients.
If you’re interested, you can even make your own sunscreen that blocks both UVA and UVB rays (UVA is what causes skin cancer; UVB is “milder” and is what causes sunburn):
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