Ice Baths: To Dip Or Not To Dip?

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We asked you for your (health-related) view of ice baths, and got the above-depicted, below-described, set of responses:

  • About 31% said “ice baths are great for the health; we should take them”
  • About 29% said “ice baths’ risks outweigh their few benefits”
  • About 26% said “ice baths’ benefits outweigh their few risks”
  • About 14% said “ice baths are dangerous and can kill you; best avoided”

So what does the science say?

Freezing water is very dangerous: True or False?

True! Water close to freezing point is indeed very dangerous, and can most certainly kill you.

Fun fact, though: many such people are still saveable with timely medical intervention, in part because the same hypothermia that is killing them also slows down the process* of death

Source (and science) for both parts of that:

Cold water immersion: sudden death and prolonged survival

*and biologically speaking, death is a process, not an event, by the way. But we don’t have room for that today!

(unless you die in some sudden violent way, such as a powerful explosion that destroys your brain instantly; then it’s an event)

Ice baths are thus also very dangerous: True or False?

False! Assuming that they are undertaken responsibly and you have no chronic diseases that make it more dangerous for you.

What does “undertaken responsibly” mean?

Firstly, the temperature should not be near freezing. It should be 10–15℃, which for Americans is 50–59℉.

You can get a bath thermometer to check this, by the way. Here’s an example product on Amazon.

Secondly, your ice bath should last no more than 10–15 minutes. This is not a place to go to sleep.

What chronic diseases would make it dangerous?

Do check with your doctor if you have any doubts, as no list we make can be exhaustive and we don’t know your personal medical history, but the main culprits are:

  • Cardiovascular disease
  • Hypertension
  • Diabetes (any type)

The first two are for heart attack risk; the latter is because diabetes can affect core temperature regulation.

Ice baths are good for the heart: True or False?

True or False depending on how they’re done, and your health before starting.

For most people, undertaking ice baths responsibly, repeated ice bath use causes the cardiovascular system to adapt to better maintain homeostasis when subjected to thermal shock (i.e. sudden rapid changes in temperature).

For example: Respiratory and cardiovascular responses to cold stress following repeated cold water immersion

And because that was a small study, here’s a big research review with a lot of data; just scroll to where it has the heading“Specific thermoregulative adaptations to regular exposure to cold air and/or cold water exposure“ for many examples and much discussion:

Health effects of voluntary exposure to cold water: a continuing subject of debate

Ice baths are good against inflammation: True or False?

True! Here’s one example:

Winter-swimming as a building-up body resistance factor inducing adaptive changes in the oxidant/antioxidant status

Uric acid and glutathione levels (important markers of chronic inflammation) are also significantly affected:

Uric acid and glutathione levels during short-term whole body cold exposure

Want to know more?

That’s all we have room for today, but check out our previous “Expert Insights” main feature looking at Wim Hof’s work in cryotherapy:

A Cold Shower A Day Keeps The Doctor Away?

Enjoy!

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  • Sunflower Corn Burger

    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.

    Burgers are rarely a health food, but in this case, everything in the patty is healthy, and it’s packed with protein, fiber, and healthy fats.

    You will need

    • 1 can chickpeas
    • ¾ cup frozen corn
    • ½ cup chopped fresh parsley
    • ⅓ cup sunflower seeds
    • ⅓ cup cornichon pickles
    • ⅓ cup wholegrain bread crumbs (gluten-free, if desired/required)
    • ¼ bulb garlic (or more if you want a stronger flavor)
    • 1 tbsp extra virgin olive oil, plus more for frying
    • 1 tbsp nutritional yeast (or 1 tsp yeast extract)
    • 2 tsp ground cumin
    • 2 tsp red pepper flakes
    • 2 tsp black pepper, coarse ground
    • 1 tsp Dijon mustard
    • To serve: 4 burger buns; these are not usually healthy, so making your own is best, but if you don’t have the means/time, then getting similarly shaped wholegrain bread buns works just fine.
    • Optional: your preferred burger toppings, e.g. greenery, red onion, tomato slices, avocado, jalapeños, whatever does it for you

    Note: there is no need to add salt; there is enough already in the pickles.

    Method

    (we suggest you read everything at least once before doing anything)

    1) Combine all the ingredients except the buns (and any optional toppings) in a food processor, pulsing a few times for a coarse texture (not a purée).

    2) Shape the mixture into 4 burger patties, and let them chill in the fridge for at least 30 minutes.

    3) Heat a skillet over a medium-high heat with some olive oil, and fry the burgers on both sides until they develop a nice golden crust; this will probably take about 4 minutes per side.

    4) Assemble in the buns with any toppings you want, and serve:

    Enjoy!

    Want to learn more?

    For those interested in some of the science of what we have going on today:

    Take care!

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  • Everything You Need To Know About The Menopause – by Kate Muir

    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.

    Kate Muir has made a career out of fighting for peri-menopausal health to be taken seriously. Because… it’s actually far more serious than most people know.

    What people usually know:

    • No more periods
    • Hot flushes
    • “I dunno, some annoying facial hairs maybe”

    The reality encompasses a lot more, and Muir covers topics including:

    • Workplace struggles (completely unnecessary ones)
    • Changes to our sex life (not usually good ones, by default!)
    • Relationship between menopause and breast cancer
    • Relationship between menopause and Alzheimer’s

    “Wait”, you say, “correlation is not causation, that last one’s just an age thing”, and that’d be true if it weren’t for the fact that receiving Hormone Replacement Therapy (HRT) or not is strongly correlated with avoiding Alzheimer’s or not.

    The breast cancer thing is not to be downplayed either. Taking estrogen comes with a stated risk of breast cancer… But what they don’t tell you, is that for many people, not taking it comes with a higher risk of breast cancer (but that’s not the doctor’s problem, in that case). It’s one of those situations where fear of litigation can easily overrule good science.

    This kind of thing, and much more, makes up a lot of the meat of this book.

    Hormonal treatment for the menopause is often framed in the wider world as a whimsical luxury, not a serious matter of health…. If you’ve ever wondered whether you might want something different, something better, as part of your general menopause plan (you have a plan for this important stage of your life, right?), this is a powerful handbook for you.

    Additionally, if (like many!) you justifiably fear your doctor may brush you off (or in the case of mood disorders, may try to satisfy you with antidepressants to treat the symptom, rather than HRT to treat the cause), this book will arm you as necessary to help you get what you need.

    Grab your copy of “Everything You Need To Know About The Menopause” from Amazon today!

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  • The Emperor’s New Klotho, Or Something More?

    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.

    Unzipping The Genes Of Aging?

    Klotho is an enzyme encoded in humans’ genes—specifically, in the KL gene.

    It’s found throughout all living parts of the human body (and can even circulate about in its hormonal form, or come to rest in its membranaceous form), and its subgroups are especially found:

    • α-klotho: in the brain
    • β-klotho: in the liver
    • γ-klotho: in the kidneys

    Great! Why do we care?

    Klotho, its varieties and variants, its presence or absence, are very important in aging.

    Almost every biological manifestation of aging in humans has some klotho-related indicator; usually the decrease or mutation of some kind of klotho.

    Which way around the cause and effect go has been the subject of much debate and research: do we get old because we don’t have enough klotho, or do we make less klotho because we’re getting old?

    Of course, everything has to be tested per variant and per system, so that can take a while (punctuated by research scientists begging for more grants to do the next one). Given that it’s about aging, testing in humans would take an incredibly long while, so most studies so far have been rodent studies.

    The general gist of the results of rodent studies is “reduced klotho hastens aging; increased klotho slows it”.

    (this can be known by artificially increasing or decreasing the level of klotho expression, again something easier in mice as it is harder to arrange transgenic humans for the studies)

    Here’s one example of many, of that vast set of rodent studies:

    Suppression of Aging in Mice by the Hormone Klotho

    Relevance for Alzheimer’s, and a science-based advice

    A few years ago (2020), an Alzheimer’s study was undertaken; they noted that the famous apolipoprotein E4 (apoE4) allele is the strongest genetic risk factor for Alzheimer’s, and that klotho may be another. FGF21 (secreted by the liver, mostly during fasting) binds to its own receptor (FGFR1) and its co-receptor β-klotho. Since this is a known neuroprotective factor, they wondered whether klotho itself may interact with β-amyloid (Aβ), and found:

    ❝Aβ can enhance the ability of klotho to draw FGF21 to regions of incipient neurodegeneration in AD❞

    ~ Dr. Lehrer & Dr. Rheinstein

    In other words: β-amyloid, the substance whose accumulation is associated with neurodegeneration in Alzheimer’s disease, is a mediator in klotho bringing a known neuroprotective factor, FGF21, to the areas of neurodegeneration

    In fewer words: klotho calls the firefighters to the scene of the fire

    Read more: Alignment of Alzheimer’s disease amyloid β-peptide and klotho

    The advice based on this? Consider practicing intermittent fasting, if that is viable for you, as it will give your liver more FGF21-secreting time, and the more FGF21, the more firefighters arrive when klotho sounds the alarm.

    See also: Intermittent Fasting: What’s the truth?

    …and while you’re at it:

    Does intermittent fasting have benefits for our brain?

    A more recent (2023) study with a slightly different (but connected) purpose, found results consistent with this:

    Longevity factor klotho enhances cognition in aged nonhuman primates

    …and, for that matter this (2023) study that found:

    Associations between klotho and telomere biology in high stress caregivers

    …which looks promising, but we’d like to see it repeated with a sounder method (they sorted caregiving into “high-stress” and “low-stress” depending on whether a child was diagnosed with ASD or not, which is by no means a reliable way of sorting this). They did ask for reported subjective stress levels, but to be more objective, we’d like to see clinical markers of stress (e.g. cortisol levels, blood pressure, heart rate changes, etc).

    A very recent (April 2024) study found that it has implications for more aspects of aging—and this time, in humans (but using a population-based cohort study, rather than lab conditions):

    The prognostic value of serum α-klotho in age-related diseases among the US population: A prospective population-based cohort study

    Can I get it as a supplement?

    Not with today’s technology and today’s paucity of clinical trials, you can’t. Maybe in the future!

    However… The presence of senescent (old, badly copied, stumbling and staggering onwards when they should have been killed and eaten and recycled already) cells actively reduces klotho levels, which means that taking supplements that are senolytic (i.e., that kill those senescent cells) can increase serum klotho levels:

    Orally-active, clinically-translatable senolytics restore α-Klotho in mice and humans

    Ok, what can I take for that?

    We wrote about a senolytic supplement that you might enjoy, recently:

    Fisetin: The Anti-Aging Assassin

    Want to know more?

    If you have the time, Dr. Peter Attia interviews Dr. Dena Dubal (researcher in several of the above studies) here:

    Click Here If The Embedded Video Doesn’t Load Automatically

    Enjoy!

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  • Fermenting Everything – by Andy Hamilton

    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.

    This is not justanother pickling book! This is, instead, what it says on the front cover, “fermenting everything”.

    Ok, maybe not literally everything, but every kind of thing that can reasonably be fermented, and it’s probably a lot more things than you might think.

    From habanero chutney to lacto-lemonade, aioli to kombucha, Ukrainian fermented tomatoes to kvass. We could go on, but we’d soon run out of space. You get the idea. If it’s a fermented product (food, drink, condiment) and you’ve heard of it, there’s probably a recipe in here.

    All in all, this is a great way to get in your gut-healthy daily dose of fermented products!

    He does also talk safety, and troubleshooting too. And so long as you have a collection of big jars and a fairly normally-furnished kitchen, you shouldn’t need any more special equipment than that, unless you decide to you your fermentation skills for making beer (which does need some extra equipment, and he offers advice on that—our advice as a health science publication is “don’t drink beer”, though).

    Bottom line: with this in hand, you can create a lot of amazing foods/drinks/condiments that are not only delicious, but also great for gut health.

    Click here to check out Fermenting Everything, and widen your culinary horizons!

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  • What you need to know about PCOS

    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.

    In 2008, microbiologist Sasha Ottey saw her OB-GYN because she had missed some periods. The doctor ran blood tests and gave her an ultrasound, diagnosing her with polycystic ovary syndrome (PCOS). She also told her not to worry, referred her to an endocrinologist (a doctor who specializes in hormones), and told her to come back when she wanted to get pregnant. 

    “I found [that] quite dismissive because that was my reason for presenting to her,” Ottey tells PGN. “I felt that she was missing an opportunity to educate me on PCOS, and that was just not an accurate message: Missing periods can lead to other serious, life-threatening health conditions.” 

    During the consultation with the endocrinologist, Ottey was told to lose weight and come back in six months. “Again, I felt dismissed and left up to my own devices to understand this condition and how to manage it,” she says. 

    Following that experience, Ottey began researching and found that thousands of people around the world had similar experiences with their PCOS diagnoses, which led her to start and lead the advocacy and support organization PCOS Challenge

    PCOS is the most common hormonal condition affecting people with ovaries of reproductive age. In the United States, one in 10 women of childbearing age have the condition, which affects the endocrine and reproductive systems and is a common cause of infertility. Yet, the condition is significantly underdiagnosed—especially among people of color—and under-researched

    Read on to find out more about PCOS, what symptoms to look out for, what treatments are available, and useful resources. 

    What is PCOS, and what are its most common symptoms? 

    PCOS is a chronic hormonal condition that affects how the ovaries work. A hormonal imbalance causes people with PCOS to have too much testosterone, the male sex hormone, which can make their periods irregular and cause hirsutism (extra hair), explains Dr. Melanie Cree, associate professor at the University of Colorado School of Medicine and director of the Multi-Disciplinary PCOS clinic at Children’s Hospital Colorado. 

    This means that people can have excess facial or body hair or experience hair loss. 

    PCOS also impacts the relationship between insulin—the hormone released when we eat—and testosterone. 

    “In women with PCOS, it seems like their ovaries are sensitive to insulin, and so when their ovaries see insulin, [they] make extra testosterone,” Cree adds. “So things that affect insulin levels [like sugary drinks] can affect testosterone levels.”

    Other common symptoms associated with PCOS include:

    • Acne
    • Thinning hair
    • Skin tags or excess skin in the armpits or neck 
    • Ovaries with many cysts
    • Infertility
    • Anxiety, depression, and other mental health conditions
    • Sleep apnea, a condition where breathing stops and restarts while sleeping

    What causes PCOS?

    The cause is still unknown, but researchers have found that the condition is genetic and can be inherited. Experts have found that exposure to harmful chemicals like PFAs, which can be present in drinking water, and BPA, commonly used in plastics, can also increase the risk for PCOS

    Studies have shown that “BPA can change how the endocrine system develops in a developing fetus … and that women with PCOS tend to also have more BPA in their bodies,” adds Dr. Felice Gersh, an OB-GYN and founder and director of the Integrative Medical Group of Irvine, which treats patients with PCOS. 

    How is PCOS diagnosed?

    PCOS is diagnosed through a physical exam; a conversation with your health care provider about your symptoms and medical history; a blood test to measure your hormone levels; and, in some cases, an ultrasound to see your ovaries. 

    PCOS is what’s known as a “diagnosis of exclusion,” Ottey says, meaning that the provider must rule out other conditions, such as thyroid disease, before diagnosing it. 

    Why isn’t more known about PCOS?

    Research on PCOS has been scarce, underfunded, and narrowly focused. Research on the condition has largely focused on the reproductive system, Ottey says, even though it also affects many aspects of a person’s life, including their mental health, appearance, metabolism, and weight. 

    “There is the point of getting pregnant, and the struggle to get pregnant for so many people,” Ottey adds. “[And] once that happens, [the condition] also impacts your ability to carry a healthy pregnancy, to have healthy babies. But outside of that, your metabolic health is at risk from having PCOS, your mental health is at risk, [and] overall health and quality of life, they’re all impacted by PCOS.” 

    People with PCOS are more likely to develop other serious health issues, like high blood pressure, heart problems, high cholesterol, uterine cancer, and diabetes. Cree says that teenagers with PCOS and obesity have “an 18-fold higher risk of type 2 diabetes” in their teens and that teenagers who get type 2 diabetes are starting to die in their late 20s and early 30s. 

    What are some treatments for PCOS?

    There is still no single medication approved by the Food and Drug Administration specifically for PCOS, though advocacy groups like PCOS Challenge are working with the agency to incorporate patient experiences and testimonials into a possible future treatment. Treatment depends on what symptoms you experience and what your main concerns are.

    For now, treatment options include the following:

    • Birth control: Your provider may prescribe birth control pills to lower testosterone levels and regulate your menstrual cycle. 
    • Lifestyle changes: Because testosterone can affect insulin levels, Cree explains that regardless of a patient’s weight, a diet with lower simple carbohydrates (such as candy, sugar, sweets, juices, sodas, and coffee drinks) is recommended.

      “When you have a large amount of sugar like that, especially as a liquid, it gets into your bloodstream very quickly,” adds Cree. “And so you then release a ton of insulin that goes to the ovary, and you make a bunch of testosterone.” 


      More exercise is also recommended for both weight loss and weight maintenance, Cree says: “Food changes and better activity work directly to lower insulin, to lower testosterone.”


    • Metformin: Even though it’s a medication for type 2 diabetes, it’s used in patients with PCOS because it can reduce insulin levels, and as a result, lower testosterone levels. 

    What should I keep in mind if I have (or think I may have) PCOS?

    If your periods are irregular or you have acne, facial hair, or hair loss, tell your provider—it could be a sign that you have PCOS or another condition. And ask questions.

    “I call periods a vital sign for women, if you’re not taking hormones,” Cree says. “Our bodies are really smart: Periods are to get pregnant, and if our body senses that we’re not healthy enough to get pregnant, then we don’t have periods. That means we’ve got to figure out why.” 

    Once you’re diagnosed, Ottey recommends that you “don’t go through extremes, yo-yo dieting, or trying to achieve massive weight loss—it only rebounds.” 

    She adds that “when you get this diagnosis, [there’s] a lot that might feel like it’s being taken away from you: ‘Don’t do this. Don’t eat this. Don’t do that.’ But what I want everyone to think of is what brings you joy, and do more of that and incorporate a lot of healthy activities into your life.” 

    Resources for PCOS patients:

    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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  • Is Unnoticed Environmental Mold Harming Your Health?

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    Environmental mold can be a lot more than just the famously toxic black mold that sometimes makes the headlines, and many kinds you might not notice, but it can colonizes your sinuses and gut just the same:

    Breaking the mold

    Around 25% of homes in North America are estimated to have mold, though the actual number is likely to be higher, affecting both older and new homes. For that matter, mold can grow in unexpected areas, like inside air conditioning units, even in dry regions.

    If mold just sat where it is minding its own business, it might not be so bad, but instead they release their spores, which are de facto airborne mycotoxins, which can colonize places like the sinuses or gut, causing significant health issues.

    Not everyone in the same household is affected the same way by mold due to genetic differences and varying pre-existing health conditions. But as a general rule of thumb, mold inflames the brain, nerves, gut, and skin, and can negatively impact the vagal nerve, which is linked to the gut-brain connection. Mycotoxins also damage mitochondria, leading to symptoms like fatigue, brain fog, and cognitive issues. To complicate matters further, mold illness can mimic other conditions like anxiety, chronic fatigue, fibromyalgia, IBS, and more, making it difficult to diagnose.

    Testing is possible, though they all have limitations, e.g:

    • Home testing: testing the home for mold spores and mycotoxins is crucial for effective treatment; professional mold remediation companies are a good idea (to do a thorough job of cleaning, without also breathing in half the mold while cleaning it).
    • Mold allergy testing: mold allergy testing (IgE testing or skin tests) is often used, but it doesn’t diagnose mold-related illnesses linked to severe symptoms like fatigue or neurodegeneration.
    • Serum antibody testing: tests for immune reactions (IgG) to mycotoxins may not always show positive results if the immune system is weakened by long-term exposure.
    • Urine mycotoxin testing: urine tests can detect mycotoxins in the body, though are likely to be more expensive, being probably not covered by public health in Canada or insurance in the US.
    • Organic acid testing: this urine test can indicate mold colonization in areas like the sinuses or gut. Again, cost/availability may vary, though.

    For more information on all of this, enjoy:

    Click Here If The Embedded Video Doesn’t Load Automatically!

    Want to learn more?

    You might also like to read:

    Mythbusting Moldy Food

    Take care!

    Don’t Forget…

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