How Your Sleep Position Changes Dementia Risk
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 just about sleep duration or even about sleep quality… It really is about which way your body is positioned.
Goodnight, glymphatic system
The association between sleeping position and dementia risk is about glymphatic drainage, which is largely powered by gravity (and thus dependent on which way around your head and neck are oriented), and very important for clearing toxins out of the brain—including beta-amyloid proteins.
This becomes particularly important when the glymphatic system becomes less efficient in midlife, often 15–20 years before cognitive decline symptoms appear.
The video’s thumbnail headline, “SCIENTISTS REVEAL: THE WAY YOUR SLEEP CAN CAUSE DEMENTIA” is overstated and inaccurate, but our adjusted headline “how your sleep position changes dementia risk” is actually representative of the paper on which this video was based; we’ll quote from the paper itself here:
❝This paper concludes that 1. glymphatic clearance plays a major role in Alzheimer’s pathology; 2. the vast majority of waste clearance occurs during sleep; 3. dementias are associated with sleep disruption, alongside an age-related decline in AQP4 polarization; and 4. lifestyle choices such as sleep position, alcohol intake, exercise, omega-3 consumption, intermittent fasting and chronic stress all modulate* glymphatic clearance. Lifestyle choices could therefore alter Alzheimer’s disease risk through improved glymphatic clearance, and could be used as a preventative lifestyle intervention for both healthy brain ageing and Alzheimer’s disease.❞
…and specifically, they found:
❝Glymphatic transport is most efficient in the right lateral sleeping position, with more CSF clearance occurring compared to supine and prone. The average person changes sleeping position 11 times per night, but there was no difference in the number of position changes between neurodegenerative and control groups, making the percentage of time spent in supine position the risk factor, not the number of position changes❞
Read the paper in full here: The Sleeping Brain: Harnessing the Power of the Glymphatic System through Lifestyle Choices
*saying “modulate” here is not as useful as it could be, because they modulate it differently: side-sleeping improves clearance; back sleeping decreases it; front-sleeping isn’t great either. Alcohol intake reduces clearance, exercise (especially cardiovascular exercise) improves it; omega-3 consumption improves it up a degree and does depend on omega-3/6 ratios, intermittent fasting improves it, and chronic stress worsens it.
And for a more pop-science presentation, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
How To Clean Your Brain (Glymphatic Health Primer)
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:
Whole – by Dr. T. Colin Campbell
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.
Most of us have at least a broad idea of what we’re supposed to be eating, what nutrients we should be getting. Many of us look at labels, and try to get our daily dose of this and that and the other.
And what we don’t get from food? There are supplements.
Dr. Campbell thinks we can do better:
Perhaps most critical in this book, where it stands out from others (we may already know, for example, that we should try to eat diverse plants and whole foods) is its treatment of why many supplements aren’t helpful.
We tend to hear “supplements are a waste of money” and sometimes they are, sometimes they aren’t. How to know the difference?
Key: things directly made from whole food sources will tend to be better. Seems reasonable, but… why? The answer lies in what else those foods contain. An apple may contain a small amount of vitamin C, less than a vitamin C tablet, but also contains a whole host of other things—tiny phytonutrients, whose machinations are mostly still mysteries to us—that go with that vitamin C and help it work much better. Lab-made supplements won’t have those.
There’s a lot more to the book… A chunk of which is a damning critique of the US healthcare system (the author argues it would be better named a sicknesscare system). We also learn about getting a good balance of macro- and micronutrients from our diet rather than having to supplement so much.
The style is conversational, while not skimping on the science. The author has had more than 150 papers published in peer-reviewed journals, and is no stranger to the relevant academia. Here, however, he focuses on making things easily comprehensible to the lay reader.
In short: if you’ve ever wondered how you’re doing at getting a good nutritional profile, and how you could do better, this is definitely the book for you.
Click here to check out “Whole” on Amazon today, and level up your daily diet!
Share This Post
How anti-vaccine figures abuse data to trick you
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 anti-vaccine movement is nearly as old as vaccines themselves. For as long as humans have sought to harness our immune system’s incredible ability to recognize and fight infectious invaders, critics and conspiracy theorists have opposed these efforts.
Anti-vaccine tactics have advanced since the early days of protesting “unnatural” smallpox inoculation, and the rampant abuse of scientific data may be the most effective strategy yet.
Here’s how vaccine opponents misuse data to deceive people, plus how you can avoid being manipulated.
Misappropriating raw and unverified safety data
Perhaps the oldest and most well-established anti-vaccine tactic is the abuse of data from the federal Vaccine Adverse Event Reporting System, or VAERS. The Centers for Disease Control and Prevention and the Food and Drug Administration maintain VAERS as a tool for researchers to detect early warning signs of potential vaccine side effects.
Anyone can submit a VAERS report about any symptom experienced at any point after vaccination. That does not mean that these symptoms are vaccine side effects.
VAERS was not designed to determine if a specific vaccine caused a specific adverse event. But for decades, vaccine opponents have misinterpreted, misrepresented, and manipulated VAERS data to convince people that vaccines are dangerous.
Anyone relying on VAERS to draw conclusions about vaccine safety is probably trying to trick you. It isn’t possible to determine from VAERS data alone if a vaccine caused a specific health condition.
VAERS isn’t the only federal data that vaccine opponents abuse. Originally created for COVID-19 vaccines, V-safe is a vaccine safety monitoring system that allows users to report—via text message surveys—how they feel and any health issues they experience up to a year after vaccination. Anti-vaccine groups have misrepresented data in the system, which tracks all health experiences, whether or not they are vaccine-related.
The U.S. Department of Defense’s Defense Medical Epidemiology Database (DMED) has also become a target of anti-vaccine misinformation. Vaccine opponents have falsely claimed that DMED data reveals massive spikes in strokes, heart attacks, HIV, cancer, and blood clots among military service members since the COVID-19 vaccine rollout. The spike was due to an updated policy that corrected underreporting in the previous years
Misrepresenting legitimate studies
A common tactic vaccine opponents use is misrepresenting data from legitimate sources such as national health databases and peer-reviewed studies. For example, COVID-19 vaccines have repeatedly been blamed for rising cancer and heart attack rates, based on data that predates the pandemic by decades.
A prime example of this strategy is a preliminary FDA study that detected a slight increase in stroke risk in older adults after a high-dose flu vaccine alone or in combination with the bivalent COVID-19 vaccine. The study found no “increased risk of stroke following administration of the COVID-19 bivalent vaccines.”
Yet vaccine opponents used the study to falsely claim that COVID-19 vaccines were uniquely harmful, despite the data indicating that the increased risk was almost certainly driven by the high-dose flu vaccine. The final peer-reviewed study confirmed that there was no elevated stroke risk following COVID-19 vaccination. But the false narrative that COVID-19 vaccines cause strokes persists.
Similarly, the largest COVID-19 vaccine safety study to date confirmed the extreme rarity of a few previously identified risks. For weeks, vaccine opponents overstated these rare risks and falsely claimed that the study proves that COVID-19 vaccines are unsafe.
Citing preprint and retracted studies
When a study has been retracted, it is no longer considered a credible source. A study’s retraction doesn’t deter vaccine opponents from promoting it—it may even be an incentive because retracted papers can be held up as examples of the medical establishment censoring so-called “truthtellers.” For example, anti-vaccine groups still herald Andrew Wakefield nearly 15 years after his study falsely linking the measles, mumps, and rubella (MMR) vaccine to autism was retracted for data fraud.
The COVID-19 pandemic brought the lasting impact of retracted studies into sharp focus. The rush to understand a novel disease that was infecting millions brought a wave of scientific publications, some more legitimate than others.
Over time, the weaker studies were reassessed and retracted, but their damage lingers. A 2023 study found that retracted and withdrawn COVID-19 studies were cited significantly more frequently than valid published COVID-19 studies in the same journals.
In one example, a widely cited abstract that found that ivermectin—an antiparasitic drug proven to not treat COVID-19—dramatically reduced mortality in COVID-19 patients exemplifies this phenomenon. The abstract, which was never peer reviewed, was retracted at the request of its authors, who felt the study’s evidence was weak and was being misrepresented.
Despite this, the study—along with the many other retracted ivermectin studies—remains a touchstone for proponents of the drug that has shown no effectiveness against COVID-19.
In a more recent example, a group of COVID-19 vaccine opponents uploaded a paper to The Lancet’s preprint server, a repository for papers that have not yet been peer reviewed or published by the prestigious journal. The paper claimed to have analyzed 325 deaths after COVID-19 vaccination, finding COVID-19 vaccines were linked to 74 percent of the deaths.
The paper was promptly removed because its conclusions were unsupported, leading vaccine opponents to cry censorship.
Applying animal research to humans
Animals are vital to medical research, allowing scientists to better understand diseases that affect humans and develop and screen potential treatments before they are tested in humans. Animal research is a starting point that should never be generalized to humans, but vaccine opponents do just that.
Several animal studies are frequently cited to support the claim that mRNA COVID-19 vaccines are dangerous during pregnancy. These studies found that pregnant rats had adverse reactions to the COVID-19 vaccines. The results are unsurprising given that they were injected with doses equal to or many times larger than the dose given to humans rather than a dose that is proportional to the animal’s size.
Similarly, a German study on rat heart cells found abnormalities after exposure to mRNA COVID-19 vaccines. Vaccine opponents falsely insinuated that this study proves COVID-19 vaccines cause heart damage in humans and was so universally misrepresented that the study’s author felt compelled to dispute the claims.
The author noted that the study used vaccine doses significantly higher than those administered to humans and was conducted in cultured rat cells, a dramatically different environment than a functioning human heart.
How to avoid being misled
The internet has empowered vaccine opponents to spread false information with an efficiency and expediency that was previously impossible. Anti-vaccine narratives have advanced rapidly due to the rampant exploitation of valid sources and the promotion of unvetted, non-credible sources.
You can avoid being tricked by using multiple trusted sources to verify claims that you encounter online. Some examples of credible sources are reputable public health entities like the CDC and World Health Organization, personal health care providers, and peer-reviewed research from experts in fields relevant to COVID-19 and the pandemic.
Read more about anti-vaccine tactics:
- How vaccine opponents spread misinformation
- How misinformation tricks our brains
- How vaccine opponents use kids to spread misinformation
This article first appeared on Public Good News and is republished here under a Creative Commons license.
Share This Post
These Top Few Things Make The Biggest Difference To Health
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 Best Few Interventions For The Best Health
Writer’s note: I was going to do something completely different for today (so that can go out another week now), but when reflecting on my own “what should I focus on in the new year?” (in terms of my own personal health goals and such) it occured to me that I should look back on the year’s articles, to take our own advice myself, and see what most important things I should make sure to focus on.
In so doing for myself, it occured to me that you, our subscribers who like condensed information and simple interventions for big positive effects, might also find value in a similar once-over. And so, today’s main feature was born!
Sometimes at 10almonds we talk about “those five things that affect everything”. They are:
- Good diet
- Good exercise
- Good sleep
- Not drinking
- Not smoking
If we were to add a sixth in terms of things that make a huge difference, it would be “manage stress effectively” and a seventh, beyond the scope of our newsletter, would be “don’t be socioeconomically disadvantaged” (e.g. poor, and/or part of some disprivileged minority group).
But as for those five we listed, it still leaves the question: what are the few most effective things we can do to improve them? Where can we invest our time/energy/effort for greatest effect?
Good diet
Best current science consistently recommends the Mediterranean Diet:
The Mediterranean Diet: What Is It Good For?
But it can be tweaked for specific desired health considerations:
Four Ways To Upgrade The Mediterranean Diet
Other most-effective dietary tweaks that impact a lot of other areas of health include looking after your gut health and looking after your blood sugars:
Making Friends With Your Gut (You Can Thank Us Later)
and
“Let Them Eat Cake”, She Said (10 Ways To Balance Blood Sugars)
Good exercise
Most exercise is good, but two of the most beneficial things that are (for most people) easy to implement are walking, and High-Intensity Interval Training:
How To Do HIIT (Without Wrecking Your Body)
Good sleep
This means quality and quantity! We cannot skimp on either and expect good health:
Why You Probably Need More Sleep
and as for quality,
The Head-To-Head Of Google and Apple’s Top Apps For Getting Your Head Down
Not drinking
According to the World Health Organization, the only safe amount of alcohol is zero.
See also:
Can We Drink To Good Health? (e.g. Red Wine & Heart Health)
and
Not smoking
We haven’t done a main feature on this! It’s probably not really necessary, as it’s not very contentious to say “smoking is bad for everything”.
WHO | Tobacco kills up to half its users who don’t quit
However, as a side-note, while cannabis is generally recognised as not as harmful as tobacco-based products, it has some fairly major drawbacks too. For some people, the benefits (e.g. pain relief) may outweigh the risks, though:
Final thoughts
Not sure where to start? We suggest this order of priorities, unless you have a major health condition that makes something else a higher priority:
- If you smoke, stop
- If you drink, reduce, or ideally stop
- Improve your diet
About that diet…
- Worry less about what to exclude, and instead focus on adding more variety of fruit/veg
- See also: Level-Up Your Fiber Intake! (Without Difficulty Or Discomfort)
- That said, if you’re looking for things to cut, sugar is a top candidate (and red meat is in clear second place albeit some way below)
When it comes to exercise, get your 10,000 daily steps in (actually, science says 8,000 steps is fine), and consider adding HIIT per our above article, when you feel like adding that in. As for that about the steps:
When it comes to sleep, if you’re taking care of the above things then this will probably take care of itself, if you don’t have a sleep-inconvenient lifestyle (e.g. shift work, just had a baby, etc) or a sleep disorder.
Take care!
Share This Post
Related Posts
Algorithms to Live By – by Brian Christian and Tom Griffiths
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.
As humans, we subconsciously use heuristics a lot to make many complex decisions based on “fuzzy logic”. For example:
Do we buy the cheap shoes that may last us a season, or the much more expensive ones that will last us for years? We’ll—without necessarily giving it much conscious thought—quickly weigh up:
- How much do we like each prospective pair of shoes?
- What else might we need to spend money on now/soon?
- How much money do we have right now?
- How much money do we expect to have in the future?
- Considering our lifestyle, how important is it to have good quality shoes?
How well we perform this rapid calculation may vary wildly, depending on many factors ranging from the quality of the advertising to how long ago we last ate.
And if we make the wrong decision, later we may have buyer’s (or non-buyer’s!) remorse. So, how can we do better?
Authors Brain Christian and Tom Griffiths have a manual for us!
This book covers many “kinds” of decision we often have to make in life, and how to optimize those decisions with the power of mathematics and computer science.
The problems (and solutions) run the gamut of…
- Optimal stopping (when to say “alright, that’s good enough”)
- Overcoming cognitive biases
- Scheduling quandaries
- Bayes’ Theorem
- Game Theory
- And when it’s more efficient to just leave things to chance!
…and many more (12 main areas of decision-making are covered).
For all it draws heavily from mathematics and computer science, the writing style is very easy-reading. It’s a “curl up in the armchair and read for pleasure” book, no matter how weighty and practical its content.
Bottom line: if you improve your ability to make the right decisions even marginally, this book will have been worth your while in the long run!
Order your copy of “Algorithms To Live By” from Amazon today!
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:
20 Easy Ways To Lose Belly Fat (Things To *Not* Do)
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.
Waist circumference (and hip to waist ratio) has been found to be a much better indicator of metabolic health than BMI. So, while at 10almonds we generally advocate for not worrying too much about one’s BMI, there are good reasons why it can be good to trim up specifically the visceral belly fat. But how?
What not to do…
Autumn Bates is a nutritionist, and her tips include nutrition and other lifestyle factors; here are some that we agree with:
- Do less cardio! Unless it’s High-Intensity Interval Training, cardio will cause a metabolic slow-down to compensate afterwards.
- Stop adding sugar to coffee, or anything else, really!
- Stop buying smoothies; they spike blood sugars; eat fresh fruit instead
- Stop eating bread; a drastic move, but as a general rule of thumb, it helps a lot of people
- Stop having more than 2 cups of coffee (this is actually about the caffeine, not the coffee; caffeine spikes cortisol in most people, and chronically high cortisol can cause fat to be redistributed to the belly and face)
- Stop sitting for more than an hour; spend more time on your feet
- Stop having more than 1 alcoholic drink per day (we’d advise stop having more than zero alcoholic drinks per day, but that may be a difficult immediate change for some)
- Stop eating “protein” bars; the rest of their contents are usually not good, to say the least.
For more, including to learn what she has against peanut butter, enjoy her video:
Click Here If The Embedded Video Doesn’t Load Automatically
Want to know more?
Check out our previous main feature:
Visceral Belly Fat & How To Lose It
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:
Instant Quiz Results, No Email Needed
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.
❓ Q&A With 10almonds Subscribers!
Q: I like that the quizzes (I’ve done two so far) give immediate results , with no “give us your email to get your results”. Thanks!
A: You’re welcome! That’s one of the factors that influences what things we include here! Our mission statement is “to make health and productivity crazy simple”, and the unwritten part of that is making sure to save your time and energy wherever we reasonably can!
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: