Asbestos in mulch? Here’s the risk if you’ve been exposed
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Mulch containing asbestos has now been found at 41 locations in New South Wales, including Sydney parks, schools, hospitals, a supermarket and at least one regional site. Tests are under way at other sites.
As a precautionary measure, some parks have been cordoned off and some schools have closed temporarily. Fair Day – a large public event that traditionally marks the start of Mardi Gras – was cancelled after contaminated mulch was found at the site.
The New South Wales government has announced a new taskforce to help investigate how the asbestos ended up in the mulch.
Here’s what we know about the risk to public health of mulch contaminated with asbestos, including “friable” asbestos, which has been found in one site (Harmony Park in Surry Hills).
What are the health risks of asbestos?
Asbestos is a naturally occurring, heat-resistant fibre that was widely used in building materials from the 1940s to the 1980s. It can be found in either a bonded or friable form.
Bonded asbestos means the fibres are bound in a cement matrix. Asbestos sheeting that was used for walls, fences, roofs and eaves are examples of bonded asbestos. The fibres don’t escape this matrix unless the product is severely damaged or worn.
A lot of asbestos fragments from broken asbestos products are still considered bonded as the fibres are not released as they lay on the ground.
Tomas Regina/Shutterstock
Friable asbestos, in contrast, can be easily crumbled by touch. It will include raw asbestos fibres and previously bonded products that have worn to the point that they crumble easily.
The risk of disease from asbestos exposure is due to the inhalation of fibres. It doesn’t matter if those fibres are from friable or bonded sources.
However, fibres can more easily become airborne, and therefore inhalable, if the asbestos is friable. This means there is more of a risk of exposure if you are disturbing friable asbestos than if you disturb fragments of bonded asbestos.
Who is most at risk from asbestos exposure?
The most important factor for disease risk is exposure – you actually have to inhale fibres to be at risk of disease.
Just being in the vicinity of asbestos, or material containing asbestos, does not put you at risk of asbestos-related disease.
For those who accessed the contaminated areas, the level of exposure will depend on disturbing the asbestos and how many fibres become airborne due to that disturbance.
However, if you have been exposed to, and inhaled, asbestos fibres it does not mean you will get an asbestos-related disease. Exposure levels from the sites across Sydney will be low and the chance of disease is highly unlikely.
The evidence for disease risk from ingestion remains highly uncertain, although you are not likely to ingest sufficient fibres from the air, or even the hand to mouth activities that may occur with playing in contaminated mulch, for this to be a concern.
The risk of disease from exposure depends on the intensity, frequency and duration of that exposure. That is, the more you are exposed to asbestos, the greater the risk of disease.
Most asbestos-related disease has occurred in people who work with raw asbestos (for example, asbestos miners) or asbestos-containing products (such as building tradespeople). This has been a tragedy and fortunately asbestos is now banned.
There have been cases of asbestos-related disease, most notably mesothelioma – a cancer of the lining of the lung (mostly) or peritoneum – from non-occupational exposures. This has included people who have undertaken DIY home renovations and may have only had short-term exposures. The level of exposure in these cases is not known and it is also impossible to determine if those activities have been the only exposure.
There is no known safe level of exposure – but this does not mean that one fibre will kill. Asbestos needs to be treated with caution.
As far as we are aware, there have been no cases of mesothelioma, or other asbestos-related disease, that have been caused by exposure from contaminated soils or mulch.
Has asbestos been found in mulch before?
Asbestos contamination of mulch is, unfortunately, not new. Environmental and health agencies have dealt with these situations in the past. All jurisdictions have strict regulations about removing asbestos products from the green waste stream but, as is happening in Sydney now, this does not always happen.
gibleho/Shutterstock
What if I’ve been near contaminated mulch?
Exposure from mulch contamination is generally much lower than from current renovation or construction activities and will be many orders of magnitude lower than past occupational exposures.
Unlike activities such as demolition, construction and mining, the generation of airborne fibres from asbestos fragments in mulch will be very low. The asbestos contamination will be sparsely spread throughout the mulch and it is unlikely there will be sufficient disturbance to generate large quantities of airborne fibres.
Despite the low chance of exposure, if you’re near contaminated mulch, do not disturb it.
If, by chance, you have had an exposure, or think you have had an exposure, it’s highly unlikely you will develop an asbestos-related disease in the future. If you’re worried, the Asbestos Safety and Eradication Agency is a good source of information.
Peter Franklin, Associate Professor and Director, Occupational Respiratory Epidemiology, The University of Western Australia
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Clean – by Dr. James Hamblin
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Our skin is our largest organ, and it’s easy to forget that, and how much it does for us. All things considered, it’s good to take good care of it! But what if we sometimes take too much “care” of it?
Dr. James Hamblin, a medical doctor-turned-writer, has explored this a lot both personally and in research. Through such, he has come to the conclusion there’s definitely a “sweet spot” of personal hygiene:
- Too little, and the Bubonic plague sweeps through Europe, or other plagues sweep through other places when European invaders came.
- Too much, and we strip our skin of one of its greatest qualities: the ability to protect us.
Dr. Hamblin asks (and answers) such questions as:
- What is good hygiene, and what is neurotically doing ourselves multiple levels of harm because advertising companies shamed us into doing so?
- Is it good or bad to use a series of products, each to undo the problem caused by the previous?
- What the difference between a 5-step skincare routine, and a series of gratuitous iatrogenic damage?
- Which products clean us most helpfully, and which clean us most harmfully?
- How often should we bathe/shower, really?
If the book has a weak point, it’s that it’s written mostly with his body in mind. That makes a difference when it comes to hairwashing, for example. He’s a white guy with short hair. If you’re black and/or have long hair, for example, your haircare needs will be quite different. Similarly, many women engage in shaving/depilation in places that most men don’t, and the consequences of that choice (and implications for any extra washing needs/harms) aren’t covered.
Bottom line: notwithstanding the aforementioned blind-spots, this book will help readers reduce the amount of harm we are doing to our bodies with our washing routines, without sacrificing actual hygiene.
Click here to check out Clean and help your skin to help you!
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Flexible Dieting – by Alan Aragon
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This is the book from which we were working, for the most part, in our recent Expert Insights feature with Alan Aragon. We’ll re-iterate here: despite not being a Dr. Aragon, he’s a well-published research scientist with decades in the field of nutritional science, as well as being a personal trainer and fitness educator.
As you may gather from our other article, there’s a lot more to this book than “eat what you like”. Specifically, as the title suggests, there’s a lot of science—decades of it, and while we had room to cite a few studies in our article, he cites many many more; several citations per page of a 288-page book.
So, that sets the book apart from a lot of its genre; instead of just “here’s what some gym-bro thinks”, it’s “here’s what decades of data says”.
Another strength of this book is how clearly he explains such a lot of science—he explains terms as they come up, as well as having a generous glossary. He also explains things clearly and simply without undue dumbing down—just clarity of communication.
The style is to-the-point and instructional; it’s neither full of fitness-enthusiast hype nor dry academia, and keeps a light and friendly conversational tone throughout.
Bottom line: if you’d like to get your diet in order and you want to do it right while also knowing which things still need attention (and why) and which you can relax about (and why), then this book will get you there.
Click here to check out Flexible Dieting, and take an easy, relaxed control of yours!
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PCOS Repair Protocol – by Tamika Woods
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PCOS (Polycystic Ovary Syndrome) affects about 1 in 5 women, and the general position of the medical establishment is “Oh dear, how sad; never mind”.
…which leaves a lot of people suffering with symptoms with little to no help.
This book looks to address that, and while it doesn’t claim to cure PCOS, it offers a system for managing (including: reducing) the symptoms. The author, a clinical nutritionist by academic background, tackles this in large part via being mindful about what one eats, in the context of the gut and endocrine system specifically.
It’s not just “have a gut healthy diet and eat foods with these nutrients”, though (although yes: also that). Rather, the author walks us through in-depth quizzes and lab testing advice, to advise the reader on how to understand the root cause of your PCOS symptoms, and then address each of those with an individualized management plan.
The style is on the low-end of pop-science, notwithstanding the clinically-informed content. For those who like a very chatty informal approach, you’ll find this one perfect. For those who don’t, well, you won’t find this one perfect, but you will most likely find it informative all the same.
Bottom line: if you or someone you care about (do you know 5 women?) has PCOS, the information in here could make a difference.
Click here to check out PCOS Repair Protocol, and suffer less!
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Women’s Strength Training Anatomy – by Frédéric Delavier
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.
Fitness guides for women tend to differ from fitness guides for men, in the wrong ways:
“Do some squats and jumping jacks, and here’s a exercise for your abs; you too can look like our model here”
In those other books we are left wonder: where’s the underlying information? Where are the explanations that aren’t condescending? Where, dare we ask, is the understanding that a woman might ever lift something heavier than a baby?
Delavier, in contrast, delivers. With 130 pages of detailed anatomical diagrams for all kinds of exercises to genuinely craft your body the way you want it for you. Bigger here, smaller there, functional strength, you decide.
And rest assured: no, you won’t end up looking like Arnold Schwarzenegger unless you not only eat like him, but also have his genes (and possibly his, uh, “supplement” regime).
What you will get though, is a deep understanding of how to tailor your exercise routine to actually deliver the personalized and specific results that you want.
Pick Up Today’s Book on Amazon!
Not looking for a feminine figure? You may like the same author’s book for men:
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What does it mean to be immunocompromised?
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Our immune systems help us fight off disease, but certain health conditions and medications can weaken our immune systems. People whose immune systems don’t work as well as they should are considered immunocompromised.
Read on to learn more about how the immune system works, what causes people to be immunocompromised, and how we can protect ourselves and the immunocompromised people around us from illness.
What is the immune system?
The immune system is a network of cells, organs, and chemicals that helps our bodies fight off infections caused by invaders, such as bacteria, viruses, fungi, and parasites.
Some important parts of the immune system include:
- White blood cells, which attack and kill germs that don’t belong inside our bodies.
- Lymph nodes, which help our bodies filter out germs.
- Antibodies, which help our bodies recognize invaders.
- Cytokines, which tell our immune cells what to do.
What causes people to be immunocompromised?
Some health conditions and medications can prevent our immune systems from functioning optimally, which makes us more vulnerable to infection. Health conditions that compromise the immune system fall into two categories: primary immunodeficiency and secondary immunodeficiency.
Primary immunodeficiency
People with primary immunodeficiency are born with genetic mutations that prevent their immune systems from functioning as they should. There are hundreds of types of primary immunodeficiencies. Since these mutations affect the immune system to varying degrees, some people may experience symptoms and get diagnosed early in life, while others may not know they’re immunocompromised until adulthood.
Secondary immunodeficiency
Secondary immunodeficiency happens later in life due to an infection like HIV, which weakens the immune system over time, or certain types of cancer, which prevent the body from producing enough white blood cells to adequately fight off infection. Studies have also shown that getting infected with COVID-19 may cause immunodeficiency by reducing our production of “killer T-cells,” which help fight off infections.
Sometimes necessary treatments for certain medical conditions can also cause secondary immunodeficiency. For example, people with autoimmune disorders—which cause the immune system to become overactive and attack healthy cells—may need to take immunosuppressant drugs to manage their symptoms. However, the drugs can make them more vulnerable to infection.
People who receive organ transplants may also need to take immunosuppressant medications for life to prevent their body from rejecting the new organ. (Given the risk of infection, scientists continue to research alternative ways for the immune system to tolerate transplantation.)
Chemotherapy for cancer patients can also cause secondary immunodeficiency because it kills the immune system’s white blood cells as it’s trying to kill cancer cells.
What are the symptoms of a compromised immune system?
People who are immunocompromised may become sick more frequently than others or may experience more severe or longer-term symptoms than others who contract the same disease.
Other symptoms of a compromised immune system may include fatigue; digestive problems like cramping, nausea, and diarrhea; and slow wound healing.
How can I find out if I’m immunocompromised?
If you think you may be immunocompromised, talk to your health care provider about your medical history, your symptoms, and any medications you take. Blood tests can determine whether your immune system is producing adequate proteins and cells to fight off infection.
I’m immunocompromised—how can I protect myself from infection?
If you’re immunocompromised, take precautions to protect yourself from illness.
Wash your hands regularly, wear a well-fitting mask around others to protect against respiratory viruses, and ensure that you’re up to date on recommended vaccines.
Immunocompromised people may need more doses of vaccines than people who are not immunocompromised—including COVID-19 vaccines. Talk to your health care provider about which vaccines you need.
How can I protect the immunocompromised people around me?
You never know who may be immunocompromised. The best way to protect immunocompromised people around you is to avoid spreading illnesses.
If you know you’re sick, isolate whenever possible. Wear a well-fitting mask around others—especially if you know that you’re sick or that you’ve been exposed to germs. Make sure you’re up to date on recommended vaccines, and practice regular hand-washing.
If you’re planning to spend time with someone who is immunocompromised, ask them what steps you can take to keep them safe.
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.
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The Brain Health Book – by Dr. John Randolph
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The author, a clinical neuropsychologist and brain health consultant, brings his professional knowledge and understanding to bear on the questions of what works, what doesn’t, and why?
In practical terms, the focus is mostly on maintaining/improving attention, memory, and executive functions. To that end, he covers what kinds of exercises to do (physical and mental!), and examines what strategies make the most difference—including the usual lifestyle considerations of course, but also more specifically than that, what to prioritize over what when it comes to daily choices.
The style is easy pop-science, with an emphasis on being directly useful to the reader, rather than giving an overabundance of citations for everything as we go along. He does, however, explain the necessary science as we go, making the book educational without being academic.
Bottom line: if you’d like to maintain/improve your brain, this book can certainly help with that, and as a bonus (unless you are already an expert) you’ll learn plenty about the brain as you go.
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