Is thunderstorm asthma becoming more common?
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
When spring arrives, so do warnings about thunderstorm asthma. But a decade ago, most of us hadn’t heard of it.
So where did thunderstorm asthma come from? Is it a new phenomenon?
In 2016, the world’s most catastrophic thunderstorm asthma event took Melbourne by surprise. An increase in warnings and monitoring is partly a response to this.
But there are also signs climate change may be exacerbating the likelihood of thunderstorm asthma, with more extreme weather, extended pollen seasons and a rise in Australians reporting hay fever.
A landmark catastrophe
The first time many Australians heard of thunderstorm asthma was in November 2016, when a major event rocked Melbourne.
During a late night storm, an estimated 10,000 people were rushed to hospitals with severe asthma attacks. With thousands of calls on emergency lines, ambulances and emergency departments were unprepared to handle the rapid increase in people needing urgent medical care. Tragically, ten of those people died.
This was the most catastrophic thunderstorm asthma event in recorded history and the first time deaths have ever occurred anywhere in the world.
In response, the Victorian Department of Health implemented initiatives, including public awareness campaigns and improvements to health and emergency services, to be ready for future thunderstorm asthma events.
A network of pollen monitoring stations was also set up across the state to gather data that helps to predict future events.
A problem for decades
While this event was unexpected, it wasn’t the first time we’d had thunderstorm asthma in Australia – we’ve actually known about it for decades.
Melbourne reported its first instance of thunderstorm asthma back in 1984, only a year after this phenomenon was first discovered in Birmingham in the United Kingdom.
Thunderstorm asthma has since been reported in other parts of Australia, including Canberra and New South Wales. But it is still most common in Melbourne. Compared to any other city (or country) the gap is significant: over a quarter of all known events worldwide have occurred in Melbourne.
Why Melbourne?
Melbourne’s location makes it a hotspot for these kinds of events. Winds coming from the north of Melbourne tend to be dry and hot as they come from deserts in the centre of Australia, while winds from the south are cooler as they come from the ocean.
When hot and cool air mix above Melbourne, it creates the perfect conditions for thunderstorms to form.
Northern winds also blow a lot of pollen from farmlands into the city, in particular grass pollen. This is not only the most common cause of seasonal hay fever in Melbourne but also a major trigger of thunderstorm asthma.
Why grass pollen?
There’s a particular reason grass pollen is the main culprit behind thunderstorm asthma in Australia. During storms there is a lot of moisture in the air. Grass pollen will absorb this moisture, making it swell up like a water balloon.
If pollen absorbs too much water whilst airborne, it can burst or “rupture,” releasing hundreds of microscopic particles into the air that can be swept by powerful winds.
Normally, when you breathe in pollen it gets stuck in your upper airway – for example, your nose and throat. This is what causes typical hay fever symptoms such as sneezing or runny nose.
But the microscopic particles released from ruptured grass pollen are much smaller and don’t get stuck as easily in the upper airway. Instead, they can travel deep into your airways until they reach your lungs. This may trigger more severe symptoms, such as wheezing or difficulty breathing, even in people with no prior history of asthma.
So who is at risk?
You might think asthma is the biggest risk factor for thunderstorm asthma. In fact, the biggest risk factor is hay fever.
Up to 99% of patients who went to the emergency department during the Melbourne 2016 event had hay fever, while a majority (60%) had no prior diagnosis of asthma.
Every single person hospitalised was allergic to at least one type of grass pollen. All had a sensitivity to ryegrass.
Is thunderstorm asthma becoming more common?
Thunderstorm asthma events are rare, with just 26 events officially recorded worldwide.
However there is evidence these events could become more frequent and severe in coming years, due to climate change. Higher temperatures and pollution could be making plants produce more pollen and pollen seasons last much longer.
Extreme weather events, including thunderstorms, are also expected to become more common and severe.
In addition, there are signs rates that hay fever may be increasing. The number of Australians reporting allergy symptoms have risen from 15% in 2008 to 24% in 2022. Similar trends in other countries has been linked to climate change.
How can I prepare?
Here are three ways you can reduce your risk of thunderstorm asthma:
- stock up on allergy medication and set up an asthma action plan with your GP
- check daily pollen forecasts for the estimated pollen level and risk of a thunderstorm asthma event in your local area
- on days with high pollen or a high risk of thunderstorm asthma, spend less time outside or wear a surgical face mask to reduce your symptoms.
Kira Morgan Hughes, PhD Candidate in Allergy and Asthma, School of Life and Environmental Sciences, Deakin University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Will there soon be a cure for HIV?
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
Human immunodeficiency virus, or HIV, is a chronic health condition that can be fatal without treatment. People with HIV can live healthy lives by taking antiretroviral therapy (ART), but this medication must be taken daily in order to work, and treatment can be costly. Fortunately, researchers believe a cure is possible.
In July, a seventh person was reportedly cured of HIV following a 2015 stem cell transplant for acute myeloid leukemia. The patient stopped taking ART in 2018 and has remained in remission from HIV.
Read on to learn more about HIV, the promise of stem cell transplants, and what other potential cures are on the horizon.
What is HIV?
HIV infects and destroys the immune system’s cells, making people more susceptible to infections. If left untreated, HIV will severely impair the immune system and progress to acquired immunodeficiency syndrome (AIDS). People living with untreated AIDS typically die within three years.
People with HIV can take ART to help their immune systems recover and to reduce their viral load to an undetectable level, which slows the progression of the disease and prevents them passing the virus to others.
How can stem cell transplants cure HIV?
Several people have been cured of HIV after receiving stem cell transplants to treat leukemia or lymphoma. Stem cells are produced by the spongy tissue located in the center of some bones, and they can turn into new blood cells.
A mutation on the CCR5 gene prevents HIV from infecting new cells and creates resistance to the virus, which is why some HIV-positive people have received stem cells from donors carrying this mutation. (One person was reportedly cured of HIV after receiving stem cells without the CCR5 mutation, but further research is needed to understand how this occurred.)
Despite this promising news, experts warn that stem cell transplants can be fatal, so it’s unlikely this treatment will be available to treat people with HIV unless a stem cell transplant is needed to treat cancer. People with HIV are at an increased risk for blood cancers, such as Hodgkin lymphoma and non-Hodgkin lymphoma, which stem cell transplants can treat.
Additionally, finding compatible donors with the CCR5 mutation who share genetic heritage with patients of color can be challenging, as donors with the mutation are typically white.
What are other potential cures for HIV?
In some rare cases, people who started ART shortly after infection and later stopped treatment have maintained undetectable levels of HIV in their bodies. There have also been some people whose bodies have been able to maintain low viral loads without any ART at all.
Researchers are studying these cases in their search for a cure.
Other treatment options researchers are exploring include:
- Gene therapy: In addition to stem cell transplants, gene therapy for HIV involves removing genes from HIV particles in patients’ bodies to prevent the virus from infecting other cells.
- Immunotherapy: This treatment is typically used in cancer patients to teach their immune systems how to fight off cancer. Research has shown that giving some HIV patients antibodies that target the virus helps them reach undetectable levels of HIV without ART.
- mRNA technology: mRNA, a type of genetic material that helps produce proteins, has been used in vaccines to teach cells how to fight off viruses. Researchers are seeking a way to send mRNA to immune system cells that contain HIV.
When will there be a cure for HIV?
The United Nations and several countries have pledged to end HIV and AIDS by 2030, and a 2023 UNAIDS report affirmed that reaching this goal is possible. However, strategies to meet this goal include HIV prevention and improving access to existing treatment alongside the search for a cure, so we still don’t know when a cure might be available.
How can I find out if I have HIV?
You can get tested for HIV from your primary care provider or at your local health center. You can also purchase an at-home HIV test from a drugstore or online. If your at-home test result is positive, follow up with your health care provider to confirm the diagnosis and get treatment.
For more information, talk to your health care provider.
This article first appeared on Public Good News and is republished here under a Creative Commons license.
Share This Post
-
The Mind-Gut Connection – by Dr. Emeran Mayer
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
We’ve reviewed books about the mind-gut connection before, so what makes this one stand out?
Firstly, it’s a lot more comprehensive than the usual “please, we’re begging you, eat some fiber”.
And yes, of course that’s part of it. Prebiotics, probiotics, reduce fried and processed foods, reduce sugar/alcohol, reduce meat, and again, eat some greenery.
But where this book really comes into its own is looking more thoroughly at the gut microbiota and their function. Dr. Mayer goes well beyond “there are good and bad bacteria” and looks at the relationship each of them have with the body’s many hormones, and especially neurotransmitters like serotonin and dopamine.
He also looks at the two-way connection between brain and gut. Yes, our gut gives us “gut feelings”, but 10% of communication between the brain and gut is in the other direction; he explores what that means for us, too.
Finally, he does give a lot of practical advice, not just dietary but also behavioral, to make the most of our mind-gut connection and make it work for our health, rather than against it.
Bottom line: this is the best book on the brain-gut connection that this reviewer has read so far, and certainly the most useful if you already know about gut-healthy nutrition, and are looking to take your understanding to the next level.
Click here to check out The Mind-Gut Connection, and start making yours work for your benefit!
Share This Post
-
How long does back pain last? And how can learning about pain increase the chance of recovery?
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
Back pain is common. One in thirteen people have it right now and worldwide a staggering 619 million people will have it this year.
Chronic pain, of which back pain is the most common, is the world’s most disabling health problem. Its economic impact dwarfs other health conditions.
If you get back pain, how long will it take to go away? We scoured the scientific literature to find out. We found data on almost 20,000 people, from 95 different studies and split them into three groups:
- acute – those with back pain that started less than six weeks ago
- subacute – where it started between six and 12 weeks ago
- chronic – where it started between three months and one year ago.
We found 70%–95% of people with acute back pain were likely to recover within six months. This dropped to 40%–70% for subacute back pain and to 12%–16% for chronic back pain.
Clinical guidelines point to graded return to activity and pain education under the guidance of a health professional as the best ways to promote recovery. Yet these effective interventions are underfunded and hard to access.
More pain doesn’t mean a more serious injury
Most acute back pain episodes are not caused by serious injury or disease.
There are rare exceptions, which is why it’s wise to see your doctor or physio, who can check for signs and symptoms that warrant further investigation. But unless you have been in a significant accident or sustained a large blow, you are unlikely to have caused much damage to your spine.
Your doctor or physio can rule out serious damage.
DG fotostock/ShutterstockEven very minor back injuries can be brutally painful. This is, in part, because of how we are made. If you think of your spinal cord as a very precious asset (which it is), worthy of great protection (which it is), a bit like the crown jewels, then what would be the best way to keep it safe? Lots of protection and a highly sensitive alarm system.
The spinal cord is protected by strong bones, thick ligaments, powerful muscles and a highly effective alarm system (your nervous system). This alarm system can trigger pain that is so unpleasant that you cannot possibly think of, let alone do, anything other than seek care or avoid movement.
The messy truth is that when pain persists, the pain system becomes more sensitive, so a widening array of things contribute to pain. This pain system hypersensitivity is a result of neuroplasticity – your nervous system is becoming better at making pain.
Reduce your chance of lasting pain
Whether or not your pain resolves is not determined by the extent of injury to your back. We don’t know all the factors involved, but we do know there are things that you can do to reduce chronic back pain:
- understand how pain really works. This will involve intentionally learning about modern pain science and care. It will be difficult but rewarding. It will help you work out what you can do to change your pain
- reduce your pain system sensitivity. With guidance, patience and persistence, you can learn how to gradually retrain your pain system back towards normal.
How to reduce your pain sensitivity and learn about pain
Learning about “how pain works” provides the most sustainable improvements in chronic back pain. Programs that combine pain education with graded brain and body exercises (gradual increases in movement) can reduce pain system sensitivity and help you return to the life you want.
Some programs combine education with gradual increases in movement.
Halfpoint/ShutterstockThese programs have been in development for years, but high-quality clinical trials are now emerging and it’s good news: they show most people with chronic back pain improve and many completely recover.
But most clinicians aren’t equipped to deliver these effective programs – good pain education is not taught in most medical and health training degrees. Many patients still receive ineffective and often risky and expensive treatments, or keep seeking temporary pain relief, hoping for a cure.
When health professionals don’t have adequate pain education training, they can deliver bad pain education, which leaves patients feeling like they’ve just been told it’s all in their head.
Community-driven not-for-profit organisations such as Pain Revolution are training health professionals to be good pain educators and raising awareness among the general public about the modern science of pain and the best treatments. Pain Revolution has partnered with dozens of health services and community agencies to train more than 80 local pain educators and supported them to bring greater understanding and improved care to their colleagues and community.
But a broader system-wide approach, with government, industry and philanthropic support, is needed to expand these programs and fund good pain education. To solve the massive problem of chronic back pain, effective interventions need to be part of standard care, not as a last resort after years of increasing pain, suffering and disability.
Sarah Wallwork, Post-doctoral Researcher, University of South Australia and Lorimer Moseley, Professor of Clinical Neurosciences and Foundation Chair in Physiotherapy, University of South Australia
This article is republished from The Conversation under a Creative Commons license. Read the original article.
Share This Post
-
Zero Sugar / One Month – by Becky Gillaspy
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
We’ve reviewed books about the evils of sugar before, so what makes this one different?
This one has a focus on helping the reader quit it. It assumes we already know the evils of sugar (though it does cover that too).
It looks at the mechanisms of sugar addiction (habits-based and physiological), and how to safely and painlessly cut through those to come out the other side, free from sugar.
The author gives a day-by-day plan, for not only eliminating sugar, but also adding and including things to fill the gap it leaves, keeping us sated, energized, and happy along the way.
In the category of subjective criticism, it does also assume we want to lose weight, which may not be the case for many readers. But that’s a by-the-by and doesn’t detract from the useful guide to quitting sugar, whatever one’s reasons.
Bottom line: if you would like to quit sugar but find it hard, this book thinks of everything and walks you by the hand, making it easy.
Click here to check out Zero Sugar / One Month, and reap the health benefits!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Anchovies vs Sardines – Which is Healthier?
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
Our Verdict
When comparing anchovies to sardines, we picked the sardines.
Why?
In terms of macros, sardines have slightly more protein and more than 2x the fat, but the fat profile is healthier than that of anchovies, meaning that the amount of saturated fat is the same, and sardines have more poly- and monounsaturated fats. Breaking it down further, sardines also have more omega-3. Unless you are for whatever reason especially keen to keep your total fat* intake down, sardines win here.
*or calories, which in this case come almost entirely from the fat, and sardines are consequently nearly 2x higher in calories.
When it comes to vitamins, sardines further distinguish themselves; anchovies have more of vitamins B2 and B3, while sardines have more of vitamins A, B1, B6, B12, B9, E, and K—in some cases, by quite large margins (especially the B12 and K, being 14x more and 26x more, respectively). A clear win for sardines.
Minerals are closer to even; anchovies have more copper, iron, and zinc, while sardines have more calcium, manganese, phosphorus, and selenium. That’s already a slight win for sardines, before we take into account that sardines’ margins of difference are also much greater than anchovies’.
In short, enjoy either in moderation if you are so inclined, but sardines win on overall nutritional density.
Want to learn more?
You might like to read:
Farmed Fish vs Wild Caught: More Important Than You Might Think
Take care!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Sleep Smarter – by Shawn Stevenson
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
You probably know to avoid blue light before bed, put a curfew on the caffeine, and have fresh bedding. So, what does this book offer that’s new?
As the subtitle suggests, it’s 21 tips for better sleep, so if even half of them are new, then it’ll still be adding value.
This is a book review, not a book summary, but to give an idea of the kind of thing you might not already know: there’s a section on bedroom houseplants! For example…
- Which plants filter the air best according to NASA, rather than “according to tradition”
- Which plants will thrive in what will hopefully be a cool dark environment
- Which plants produce oxygen even at night, rather than just during the day
The writing style is personable without losing clarity or objectivity:
- We read personal anecdotes, and we read science
- We get “I tried this”, and we get “this sleep study found such-and-such”
- We get not just the “what”, but also the “why” and the “how”
We get the little changes that make a big difference—sometimes the difference between something working or not!
Bottom line: if you’d like to get better sleep and a blue light filter hasn’t wowed you and changed your life, this book will bring your sleep knowledge (and practice) to the next level.
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
