Saunas: Health Benefits (& Caveats)
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.
The Heat Is On
In Tuesday’s newsletter, we asked you your (health-related) opinion on saunas, and got the above-depicted, below-described, set of responses:
- About 53% said it is “a healthful activity with many benefits”
- About 25% said it is “best avoided; I feel like I’m dying in there”
- About 12% said “it feels good and therefore can’t be all bad”
So what does the science say?
The heat of saunas carries a health risk: True or False?
False, generally speaking, for any practical purposes. Of course, anything in life comes with a health risk, but statistically speaking, your shower at home is a lot more dangerous than a sauna (risk of slipping with no help at hand).
It took a bit of effort to find a paper on the health risks of saunas, because all the papers on PubMed etc coming up for those keywords were initially papers with “reduces the risk of…”, i.e. ways in which the sauna is healthy.
However, we did find one:
❝Contraindications to sauna bathing include unstable angina pectoris, recent myocardial infarction, and severe aortic stenosis.
Sauna bathing is safe, however, for most people with coronary heart disease with stable angina pectoris or old myocardial infarction.
Very few acute myocardial infarctions and sudden deaths occur in saunas, but alcohol consumption during sauna bathing increases the risk of hypotension, arrhythmia, and sudden death, and should be avoided. ❞
~ Dr. Matti Hannuksela & Dr. Samer Ellahham
Source: Benefits and risks of sauna bathing
So, very safe for most people, safe even for most people with heart disease, but there are exceptions so check with your own doctor of course.
And drinking alcohol anywhere is bad for the health, but in a sauna it’s a truly terrible idea. As an aside, please don’t drink alcohol in the shower, either (risk of slipping with no help at hand, and this time, broken glass too).
On the topic of it being safe for most people’s hearts, see also:
Beneficial effects of sauna bathing for heart failure patients
As an additional note, those who have a particular sensitivity to the heat, may (again please check with your own doctor, as your case may vary) actually benefit from moderate sauna use, to reduce the cardiovascular strain that your body experiences during heatwaves (remember, you can get out of a sauna more easily than you can get out of a heatwave, so for many people it’s a lot easier to do moderation and improve thermoregulatory responses):
Sauna usage can bring many health benefits: True or False?
True! Again, at least for most people. As well as the above-discussed items, here’s one for mortality rates in healthy Finnish men:
Not only that, also…
❝The Finnish saunas have the most consistent and robust evidence regarding health benefits and they have been shown to decrease the risk of health outcomes such as hypertension, cardiovascular disease, thromboembolism, dementia, and respiratory conditions; may improve the severity of musculoskeletal disorders, COVID-19, headache and flu, while also improving mental well-being, sleep, and longevity.
Finnish saunas may also augment the beneficial effects of other protective lifestyle factors such as physical activity.
The beneficial effects of passive heat therapies may be linked to their anti-inflammatory, cytoprotective and anti-oxidant properties and synergistic effects on neuroendocrine, circulatory, cardiovascular and immune function.
Passive heat therapies, notably Finnish saunas, are emerging as potentially powerful and holistic strategies to promoting health and extending the healthspan in all populations. ❞
~ Dr. Jari Laukkanen & Dr. Setor Kunutsor
(the repeated clarification of “Finnish sauna” is not a matter of fervent nationalism, by the way, but rather a matter of disambiguating it from Swedish sauna, which has some differences, most notably a lack of steam)
That reminds us: in Scandinavia, it is usual to use a sauna naked, and in Finland in particular, it is a common social activity amongst friends, coworkers, etc. In the US, many people are not so comfortable with nudity, and indeed, many places that provide saunas, may require the wearing of swimwear. But…
Just one problem: if you’re wearing swimwear because you’ve just been swimming in a pool, you now have chlorinated water soaked into your swimwear, which in the sauna, will become steam + chlorine gas. That’s not so good for your health (and is one reason, beyond tradition and simple normalization, for why swimwear is usually not permitted in Finnish saunas).
Want to read more?
You might like our previous main feature,
Turning Up The Heat Against Diabetes & Alzheimer’s ← you guessed it, sauna may be beneficial against these too
Take care!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Recommended
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
Sweet Dreams Are Made of THC (Or Are They?)
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.
It’s Q&A Day at 10almonds!
Have a question or a request? We love to hear from you!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small 😎
❝I’m one of those older folks that have a hard time getting 7 hrs. I know a lot of it my fault…like a few beers at nite…🥰am now trying THC gummies for anxiety, instead of alcohol……less calories 😁how does THC affect our sleep,? Safer than alcohol…..I know your next article 😊😊😊😊❣️😊alot of us older kids do take gummies 😲😲😲thank you❞
Great question! We wrote a little about CBD gummies (not THC) before:
…and went on to explore THC’s health benefits and risks here:
For starters, let’s go ahead and say: you’re right that it’s safer (for most people) than alcohol—but that’s not a strong claim, because alcohol is very bad for pretty much everything, including sleep.
So how does THC measure up when it comes to sleep quality?
Good news: it affects the architecture of sleep in such a way that you will spend longer in deep sleep (delta wave activity), which means you get more restorative and restful sleep!
See also: Alpha, beta, theta: what are brain states and brain waves? And can we control them?
Bad news: it does so at the cost of reducing your REM sleep, which is also necessary for good brain health, and will cause cognitive impairment if you skip too much. Normally, if you are sleep-deprived, the brain will prioritize REM sleep at the cost of other kinds of sleep; it’s that important. However, if you are chemically impaired from getting healthy REM sleep, there’s not much your brain can do to save you from the effects of REM sleep loss.
See: Cannabis, Cannabinoids, and Sleep: a Review of the Literature
This is, by the way, a reason that THC gets prescribed for some sleep disorders, in cases where the initial sleep disruption was because of nightmares, as it will reduce those (along with any other dreams, as collateral damage):
One thing to be careful of if using THC as a sleep aid is that withdrawal may make your symptoms worse than they were to start with:
Updates in the use of cannabis for insomnia
With all that in mind, you might consider (if you haven’t already tried it) seeing whether CBD alone improves your sleep, as while it does also extend time in deep sleep, it doesn’t reduce REM nearly as much as THC does:
👆 this study was paid for by the brand being tested, so do be aware of potential publication bias. That’s not to say the study is necessarily corrupt, and indeed it probably wasn’t, but rather, the publication of the results was dependent on the company paying for them (so hypothetically they could have pulled funding from any number of other research groups that didn’t get the results they wanted, leaving this one to be the only one published). That being said, the study is interesting, which is why we’ve linked it, and it’s a good jumping-off-point for finding a lot of related papers, which you can see listed beneath it.
CBD also has other benefits of its own, even without THC:
CBD Oil: What Does The Science Say?
Take care!
Share This Post
Lifespan – by Dr. David Sinclair
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.
Some books on longevity are science-heavy and heavy-going; others are glorified manifestos with much philosophy but little practical.
This one’s a sciencey-book written for a lay reader. It’s heavily referenced, but not a challenging read.
This book is divided into three parts:
- What we know (the past)
- What we’re learning (the present)
- Where we’re going (the future)
Let us quickly mention: the last part is principally sociology and economics, which are not the author’s wheelhouse. Some readers may enjoy his thoughts regardless, but we’re going to concentrate on where we found the real value of the book to be: in the first and second parts, where he brings his expertise to bear.
The first part lays the foundational knowledge that’s critical for understanding why the second part is so important.
Basically: aging is a genetic disease, and diseases can be cured. No disease has magical properties, even if sometimes it can seem for a while like they do, until we understand them better.
The second part covers a lot of recent and contemporary research into aging. We learn about such things as NAD-agonists that make elderly mice biologically young again, and the Greenland shark that easily lives for 500 years or so (currently the record-holder for vertebrates). And of course, biologically immortal jellyfish.
It’s not all animal studies though…
We learn of how NAD-agonists such as NMN have been promising in human studies too, along with resveratrol and the humble diabetes drug, metformin. These things alone may have the power to extend healthy life by 20%
Other recommendations pertain to lifestyle; the usual five things (diet, exercise, sleep, no alcohol, no smoking), as well as intermittent fasting and cryotherapy (cold showers/baths).
Bottom line: this book is informative and inspiring, and if you’ve been looking for an “in” to understanding the world of biogerontology and/or anti-aging research, this is it.
Get your copy of “Lifespan: Why We Age—And Why We Don’t Have To” from Amazon today!
Share This Post
Fruit, Fiber, & Leafy Greens… On A Low-FODMAP Diet!
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.
Fiber For FODMAP-Avoiders
First, let’s quickly cover: what are FODMAPs?
FODMAPs are fermentable oligosaccharides, disaccharides, monosaccharides, and polyols.
In plainer English: they’re carbohydrates that are resistant to digestion.
This is, for most people most of the time, a good thing, for example:
When Is A Fiber Not A Fiber? When It’s A Resistant Starch.
Not for everyone…
However, if you have inflammatory bowel syndrome (IBS), including ulcerative colitis, Crohn’s disease, or similar, then suddenly a lot of common dietary advice gets flipped on its head:
While digestion-resistant carbohydrates making it to the end parts of our digestive tract are good for our bacteria there, in the case of people with IBS or similar, it can be a bit too good for our bacteria there.
Which can mean gas (a natural by-product of bacterial respiration) accumulation, discomfort, water retention (as the pseudo-fiber draws water in and keeps it), and other related symptoms, causing discomfort, and potentially disease such as diarrhea.
Again: for most people this is not so (usually: quite the opposite; resistant starches improve things down there), but for those for whom it’s a thing, it’s a Big Bad Thing™.
Hold the veg? Hold your horses.
A common knee-jerk reaction is “I will avoid fruit and veg, then”.
Superficially, this can work, as many fruit & veg are high in FODMAPs (as are fermented dairy products, by the way).
However, a diet free from fruit and veg is not going to be healthy in any sustainable fashion.
There are, however, options for low-FODMAP fruit & veg, such as:
Fruits: bananas (if not overripe), kiwi, grapefruit, lemons, limes, melons, oranges, passionfruit, strawberries
Vegetables: alfalfa, bell peppers, bok choy, carrots, celery, cucumbers, eggplant, green beans, kale, lettuce, olives, parsnips, potatoes (and sweet potatoes, yams etc), radishes, spinach, squash, tomatoes*, turnips, zucchini
*our stance: botanically it’s a fruit, but culinarily it’s a vegetable.
For more on the science of this, check out:
Strategies for Producing Low FODMAPs Foodstuffs: Challenges and Perspectives ← table 2 is particularly informative when it comes to the above examples, and table 3 will advise about…
Bonus
Grains: oats, quinoa, rice, tapioca
…and wheat if the conditions in table 3 (linked above) are satisfied
(worth mentioning since grains also get a bad press when it comes to IBS, but that’s mostly because of wheat)
See also: Gluten: What’s The Truth?
Enjoy!
Share This Post
Related Posts
Play Bold – by Magnus Penker
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 book is very different to what you might expect, from the title.
We often see: “play bold, believe in yourself, the universe rewards action” etc… Instead, this one is more: “play bold, pay attention to the data, use these metrics, learn from what these businesses did and what their results were”, etc.
We often see: “here’s an anecdote about a historical figure and/or celebrity who made a tremendous bluff and it worked out well so you should too” etc… Instead, this one is more: “see how what we think of as safety is actually anything but! And how by embracing change quickly (or ideally: proactively), we can stay ahead of disaster that may otherwise hit us”.
Penker’s background is also relevant here. He has decades of experience, having “launched 10 start-ups and acquired, turned around, and sold over 30 SMEs all over Europe”. Importantly, he’s also “still in the game”… So, unlike many authors whose last experience in the industry was in the 1970s and who wonder why people aren’t reaping the same rewards today!
Penker is the therefore opposite of many who advocate to “play bold” but simply mean “fail fast, fail often”… While quietly relying on their family’s capital and privilege to leave a trail of financial destruction behind them, and simultaneously gloating about their imagined business expertise.
In short: boldness does not equate to foolhardiness, and foolhardiness does not equate to boldness.
As for telling the difference? Well, for that we recommend reading the book—It’s a highly instructive one.
Take The First Bold Step Of Checking Out This Book On Amazon!
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:
Master Your Core – by Dr. Bohdanna Zazulak
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 the category of “washboard abs”, this one isn’t particularly interested in how much or how little fat you have. What it’s more interested in is a strong, resilient, and stable core. Including your abs yes, but also glutes, hips, and back.
Nor is the focus on superhuman feats of strength, though certainly one could use these exercises to work towards that. Rather, here we see importance placed on functional performance, mobility, and stability.
Lest mobility and stability seem at odds with each other, understand:
- By mobility we mean the range of movement we are able to accomplish.
- By stability, we mean that any movement we make is intentional, and not because we lost our balance.
Functional performance, meanwhile, is a function of those two things, plus strength.
How does the book deliver on this?
There are exercises to do. Exercises of the athletic kind you might expect, and also exercises including breathing exercises, which gets quite a bit of attention too. Not just “do abdominal breathing”, but quite an in-depth examination of such. There are also habits to form, and lifestyle tweaks to make.
Of course, you don’t have to do all the things she suggests. The more you do, the better results you are likely to get, but if you adopt even some of the practices she recommends, you’re likely to see some benefits. And, perhaps most importantly, reduce age-related loss of mobility, stability, and strength.
Bottom line: a great all-rounder book of core strength, mobility, and stability.
Click here to check out Master Your Core and enjoy the more robust health that comes with it!
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:
Quit Drinking – by Rebecca Dolton
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.
Many “quit drinking” books focus on tips you’ve heard already—cut down like this, rearrange your habits like that, make yourself accountable like so, add a reward element this way, etc.
Dolton takes a different approach.
She focuses instead on the underlying processes of addiction, so as to not merely understand them to fight them, but also to use them against the addiction itself.
This is not just a social or behavioral analysis, by the way, and goes into some detail into the physiological factors of the addiction—including such things as the little-talked about relationship between addiction and gut flora. Candida albans, found in most if not all humans to some extent, gets really out of control when given certain kinds of sugars (including those from alcohol); it grows, eventually puts roots through the intestinal walls (ouch!) and the more it grows, the more it demands the sugars it craves, so the more you feed it.
Quite a motivator to not listen to such cravings! It’s not even you that wants it, it’s the Candida!
Anyway, that’s just one example; there are many. The point here is that this is a well-researched, well-written book that sets itself apart from many of its genre.
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:
