Why You Don’t Need 8 Glasses Of Water Per Day
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The idea that you need to drink eight glasses of water daily is a myth. For most people most of the time, this practice will not make your skin brighter, improve mental clarity, or boost energy levels. All that will happen as a result of drinking beyond your thirst, is that you’ll pee more.
A self-regulating system
Our kidneys regulate hydration by monitoring blood volume and salt levels. When blood becomes slightly saltier or its volume drops, such as through sweating, the kidneys absorb more water into the bloodstream. If needed, the body triggers thirst signals to encourage fluid intake.
In most cases, you can rely on your body’s natural thirst cues to manage hydration. Thirst is a reliable indicator of when you need to drink water, making constant monitoring of water intake unnecessary for most people.
There are some exceptions, though! Some people, such as those with kidney stones, especially older adults, or those with specific medical considerations and resultant advice from your doctor, may need to pay closer attention to their water intake.
Nor does hydration have to be a matter of “drinking water”: many foods and drinks, such as fruit, coffee, soups, etc, contribute to your daily water intake and (because the body processes it more slowly) are often more hydrating than plain water (which can just pass straight through if you take more than a certain amount at once). If you listen to your body’s thirst signals, there’s no need to rigidly count eight glasses of water each day.
For more on all of this, enjoy:
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Want to learn more?
You might also like to read:
Hydration Mythbusting ← this also covers why urine color is not as good a guide as your thirst
Take care!
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Latest Alzheimer’s Prevention Research Updates
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Questions and Answers at 10almonds
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
This newsletter has been growing a lot lately, and so have the questions/requests, and we love that! 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 am now in the “aging” population. A great concern for me is Alzheimers. My father had it and I am so worried. What is the latest research on prevention?
One good thing to note is that while Alzheimer’s has a genetic component, it doesn’t appear to be hereditary per se. Still, good to be on top of these things, and it’s never too early to start with preventive measures!
You might like a main feature we did on this recently:
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How To Improve Your Heart Rate Variability
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How’s your heart rate variability?
The hallmarks of a good, strong cardiovascular system include a medium-to-low resting heart rate (for adults: under 60 beats per minute is good; under 50 is typical of athletes), and healthy blood pressure (for adults: under 120/80, while still above 90/60, is generally considered good).
Less talked-about is heart rate variability, but it’s important too…
What is heart rate variability?
Heart rate variability is a measure of how quickly and easily your heart responds to changes in demands placed upon it. For example:
- If you’re at rest and then start running your fastest (be it for leisure or survival or anything in between), your heart rate should be able to jump from its resting rate to about 180% of that as quickly as possible
- When you stop, your heart rate should be able to shift gears back to your resting rate as quickly as possible
The same goes, to a commensurately lesser extent, to changes in activity between low and moderate, or between moderate and high.
- When your heart can change gears quickly, that’s called a high heart rate variability
- When your heart is sluggish to get going and then takes a while to return to normal after exertion, that’s called a low heart rate variability.
The rate of change (i.e., the variability) is measured in microseconds per beat, and the actual numbers will vary depending on a lot of factors, but for everyone, higher is better than lower.
Aside from quick response to crises, why does it matter?
If heart rate variability is low, it means the sympathetic nervous system is dominating the parasympathetic nervous system, which means, in lay terms, your fight-or-flight response is overriding your ability to relax.
See for example: Stress and Heart Rate Variability: A Meta-Analysis and Review of the Literature
This has a lot of knock-on effects for both physical and mental health! Your heart and brain will take the worst of this damage, so it’s good to improve things for them impossible.
This Saturday’s Life Hacks: how to improve your HRV!
Firstly, the Usual Five Things™:
- A good diet (that avoids processed foods)
- Good exercise (that includes daily physical activity—more often is more important than more intense!)
- Good sleep (7–9 hours of good quality sleep per night)
- Reduce or eliminate alcohol consumption (this is dose-dependent; any reduction is an improvement)
- Don’t smoke (just don’t)
Additional regular habits that help a lot:
- Breathing exercises, mindfulness, meditation
- Therapy, especially CBT and DBT
- Stress-avoidance strategies, for example:
- Get (and maintain) your finances in good order
- Get (and maintain) your relationship(s) in good order
- Get (and maintain) your working* life in good order
*Whatever this means to you. If you’re perhaps retired, or otherwise a home-maker, or even a student, the things you “need to do” on a daily basis are your working life, for these purposes.
In terms of simple, quick-fix, physical tweaks to focus on if you’re already broadly leading a good life, two great ones are:
- Exercise: get moving! Walk to the store even if you buy nothing but a snack or drink to enjoy while walking back. If you drove, make more trips with the shopping bags rather than fewer. If you like to watch TV, consider an exercise bike or treadmill to use while watching. If you have a partner, double-up and make it a thing you do together! Take the stairs instead of the elevator. Take the scenic route when walking someplace. Go to the bathroom that’s further away. Every little helps!
- Breathe: even just a couple of times a day, practice mindful breathing. Start with even just a minute a day, to get the habit going. What breathing exercise you do isn’t so important as that you do it. Notice your breathing; count how long each breath takes. Don’t worry about “doing it right”—you’re doing great, just observe, just notice, just slowly count. We promise that regular practice of this will have you feeling amazing
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CBD Against Diabetes!
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
❝CBD for diabetes! I’ve taken CBD for body pain. Did no good. Didn’t pay attention as to diabetes. I’m type 1 for 62 years. Any ideas?❞
Thanks for asking! First up, for reference, here’s our previous main feature on the topic of CBD:
CBD Oil: What Does The Science Say?
There, we touched on CBD’s effects re diabetes:
in mice / in vitro / in humans
In summary, according to the above studies, it…
- lowered incidence of diabetes in non-obese diabetic mice. By this they mean that pancreatic function improved (reduced insulitis and reduced inflammatory Th1-associated cytokine production). Obviously this has strong implications for Type 1 Diabetes in humans—but so far, just that, implications (because you are not a mouse).
- attenuated high glucose-induced endothelial cell inflammatory response and barrier disruption. Again, this is promising, but it was an in vitro study in very controlled lab conditions, and sometimes “what happens in the Petri dish, stays in the Petri dish”—in order words, these results may or may not translate to actual living humans.
- Improved insulin response ← is the main take-away that we got from reading through their numerical results, since there was no convenient conclusion given. Superficially, this may be of more interest to those with type 2 diabetes, but then again, if you have T1D and then acquire insulin resistance on top of that, you stand a good chance of dying on account of your exogenous insulin no longer working. In the case of T2D, “the pancreas will provide” (more or less), T1D, not so much.
So, what else is there out there?
The American Diabetes Association does not give a glowing review:
❝There’s a lot of hype surrounding CBD oil and diabetes. There is no noticeable effect on blood glucose (blood sugar) or insulin levels in people with type 2 diabetes. Researchers continue to study the effects of CBD on diabetes in animal studies. ❞
~ American Diabetes Association
Source: ADA | CBD & Diabetes
Of course, that’s type 2, but most research out there is for type 2, or else have been in vitro or rodent studies (and not many of those, at that).
Here’s a relatively more recent study that echoes the results of the previous mouse study we mentioned; it found:
❝CBD-treated non-obese diabetic mice developed T1D later and showed significantly reduced leukocyte activation and increased FCD in the pancreatic microcirculation.
Conclusions: Experimental CBD treatment reduced markers of inflammation in the microcirculation of the pancreas studied by intravital microscopy. ❞
~ Dr. Christian Lehmann et al.
Read more: Experimental cannabidiol treatment reduces early pancreatic inflammation in type 1 diabetes
…and here’s a 2020 study (so, more recent again) that was this time rats, and/but still more promising, insofar as it was with rats that had full-blown T1D already:
Read in full: Two-weeks treatment with cannabidiol improves biophysical and behavioral deficits associated with experimental type-1 diabetes
Finally, a paper in July 2023 (so, since our previous article about CBD), looked at the benefits of CBD against diabetes-related complications (so, applicable to most people with any kind of diabetes), and concluded:
❝CBDis of great value in the treatment of diabetes and its complications. CBD can improve pancreatic islet function, reduce pancreatic inflammation and improve insulin resistance. For diabetic complications, CBD not only has a preventive effect but also has a therapeutic value for existing diabetic complications and improves the function of target organs❞
…before continuing:
❝However, the safety and effectiveness of CBD are still needed to prove. It should be acknowledged that the clinical application of CBD in the treatment of diabetes and its complications has a long way to go.
The dissecting of the pharmacology and therapeutic role of CBD in diabetes would guide the future development of CBD-based therapeutics for treating diabetes and diabetic complications❞
~ Ibid.
Now, the first part of that is standard ass-covering, and the second part of that is standard “please fund more studies please”. Nevertheless, we must also not fail to take heed—little is guaranteed, especially when it comes to an area of research where the science is still very young.
In summary…
It seems well worth a try, and with ostensibly nothing to lose except the financial cost of the CBD.
If you do, you might want to keep careful track of a) your usual diabetes metrics (blood sugar levels before and after meals, insulin taken), and b) when you took CBD, what dose, etc, so you can do some citizen science here.
Lastly: please remember our standard disclaimer; we are not doctors, let alone your doctors, so please do check with your endocrinologist before undertaking any such changes!
Want to read more?
You might like our previous main feature:
How To Prevent And Reverse Type 2 Diabetes ← obviously this will not prevent or reverse Type 1 Diabetes, but avoiding insulin resistance is good in any case!
If you’re not diabetic and you’ve perhaps been confused throughout this article, then firstly thank you for your patience, and secondly you might like this quick primer:
The Sweet Truth About Diabetes: Debunking Diabetes Myths! ← this gives a simplified but fair overview of types 1 & 2
(for space, we didn’t cover the much less common types 3 & 4; perhaps another time we will)
Meanwhile, take care!
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Making Friends With Your Gut (You Can Thank Us Later)
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.
Gut Health 101
We have so many microorganisms inside us, that by cell count, their cells outnumber ours more than ten-to-one. By gene count, we have 23,000 and they have more than 3,000,000. In effect, we are more microbe than we are human. And, importantly: they form a critical part of what keeps our overall organism ticking on.
Read all about it: The role of the gut microbiota in nutrition and health
Our trillions of tiny friends keep us alive, so it really really pays to return the favor.
But how?
Probiotics and fermented foods
You probably guessed this one, but it’d be remiss not to mention it first. It’s no surprise that probiotics help; the clue is in the name. In short, they help add diversity to your microbiome (that’s a good thing).
Read from the NIH: Probiotics: What You Need To Know
As for fermented foods, not every fermented food will boost your microbiota, but great options include…
- Fermented vegetables (sauerkraut, pickles, etc)
- You’ll often hear kimchi mentioned; that is also pickled vegetables, usually mostly cabbage. It’s just the culinary experience that differs. Unlike sauerkraut, kimchi is usually spiced, for example.
- Kombucha (a fermented sweet tea)
- Miso & tempeh (different preparations of fermented soy)
The health benefits vary based on the individual strains of bacteria involved in the fermentation, so don’t get too caught up on which is best.
The best one is the one you enjoy, because then you’ll have it regularly!
Feed them plenty of prebiotic fibers
Those probiotics you took? The bacteria in them eat the fiber that you can’t digest without them. So, feed them those sorts of fibers.
Great options include:
- Bananas
- Garlic
- Onions
- Whole grains
Read more: Effects of Probiotics, Prebiotics, and Synbiotics on Human Health
Don’t feed them sugar and sweeteners
Sugar and (and, counterintuitively, aspartame) can cause unfortunate gut microbe imbalances. Put simply, they kill some of your friends and feed some of your enemies. For example…
Candida, which we all have in us to some degree, feeds on sugar (including the sugar formed from breaking down alcohol, by the way) and refined carbs. Then it grows, and puts its roots through your intestinal walls, linking with your neural system. Then it makes you crave the very things that will feed it and allow it to put bigger holes in your intestinal walls.
Do not feed the Candida.
Don’t believe us? Read: Candida albicans-Induced Epithelial Damage Mediates Translocation through Intestinal Barriers
(That’s scientist-speak for “Candida puts holes in your intestines, and stuff can then go through those holes”)
And as for how that comes about, it’s like we said:
❝Colonization of the intestine and translocation through the intestinal barrier are fundamental aspects of the processes preceding life-threatening systemic candidiasis. In this review, we discuss the commensal lifestyle of C. albicans in the intestine, the role of morphology for commensalism, the influence of diet, and the interactions with bacteria of the microbiota.❞
Source: Candida albicans as a commensal and opportunistic pathogen in the intestine
The usual five things
- Good diet (Mediterranean Diet is good; plant-based version of it is by far the best for this)
- Good exercise (yes, really)
- Good sleep (helps them, and they’ll help you get better sleep in return)
- Limit or eliminate alcohol consumption (what a shocker)
- Don’t smoke (it’s bad for everything, including gut health)
One last thing you should know:
If you’re used to having animal products in your diet, and make a sudden change to all plants, your gut will object very strongly. This is because your gut microbiome is used to animal products, and a plant-based diet will cause many helpful microbes to flourish in great abundance, and many less helpful microbes will starve and die. And they will make it officially Not Fun™ for you.
So, you have two options to consider:
- Do it anyway, and sit it out (and believe us, you’ll be sitting), get the change over with quickly, and enjoy the benefits and much happier gut that follows.
- Make the change gradual. Reduce portions of animal products slowly, have “Meatless Mondays” etc, and slowly make the change over. This—for most people—is pretty comfortable, easy, and effective.
And remember: the effects of these things we’ve talked about today compound when you do more than one of them, but if you don’t want to take probiotics or really hate kombucha or absolutely won’t consider a plant-based diet or struggle to give up sugar or alcohol, etc… Just do what you can do, and you’ll still have a net improvement!
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- Fermented vegetables (sauerkraut, pickles, etc)
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Do You Know Which Supplements You Shouldn’t Take Together? (10 Pairs!)
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Dr. LeGrand Peterson wants us to get the most out of our supplements, so watch out for these…
Time to split up some pairs…
In most cases these are a matter of competing for absorption; sometimes to the detriment of both, sometimes to the detriment of one or the other, and sometimes, the problem is entirely different and they just interact in a way that could potentially cause other problems. Dr. Peterson advises as follows:
- Vitamin C and vitamin B12: taking these together can reduce the absorption of Vitamin B12, as vitamin C can overpower it.
- Vitamin C and copper: high amounts of vitamin C can decrease copper absorption, especially in those who are severely copper deficient.
- Magnesium and calcium: these two minerals compete for absorption in the intestines, potentially reducing the effectiveness of both.
- Calcium and iron: calcium can decrease iron absorption, so they should not be taken together, especially if you are iron deficient.
- Calcium and zinc: calcium also competes with zinc, reducing zinc absorption; they should be taken at different times.
- Zinc and copper: zinc and copper compete for absorption, so they should be taken at separate times.
- Iron and zinc: iron can decrease zinc absorption, and thus, they should not be taken together.
- Iron and green tea: perhaps a surprising one, but green tea can reduce iron absorption, so they should not be taken simultaneously.
- Vitamin E and vitamin K: vitamin E increases bleeding risk, while vitamin K promotes clotting, making them opposites and risky to take together.
- Fish oil and ginkgo biloba: both are anticoagulants and can increase the risk of bleeding, especially if taken with blood thinners like warfarin.
If you need to take supplements that compete (or conflict or otherwise potentially adversely interact) with each other, it’s recommended to separate them by at least 4 hours, or better yet, take one in the morning and the other at night. If in doubt, do speak with your pharmacist or doctor for personalized advice
You may be thinking: half my foods contain half of these nutrients! And yes, assuming you have a nutritionally dense diet, this is probably the case. Foods typically release nutrients more slowly than supplements, and unlike supplements, do not usually contain megadoses (although they can, such as the selenium content of Brazil nuts, or vitamin A in carrots). Basically, food is in most cases safer and gentler than supplements. If concerned, do speak with your nutritionist or doctor for personalized advice.
For more information on all of these, enjoy:
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Want to learn more?
You might also like to read:
Do We Need Supplements, And Do They Work?
Take care!
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Eggcellent News Against Dementia?
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It’s that time of the week again… We hope all our readers have had a great and healthy week! Here are some selections from health news from around the world:
Moderation remains key
Eggs have come under the spotlight for their protective potential against dementia, largely due to their content of omega-3 fatty acids, choline, and other nutrients.
Nevertheless, the study had some limitations (including not measuring the quantity of eggs consumed, just the frequency), and while eating eggs daily showed the lowest rates of dementia, not eating them at all did not significantly alter the risk.
Eating more than 2 eggs per day is still not recommended, however, for reasons of increasing the risk of other health issues, such as heart disease.
Read in full: Could eating eggs prevent dementia?
Related: Eggs: Nutritional Powerhouse or Heart-Health Timebomb?
More than suitable
It’s common for a lot of things to come with the warning “not suitable for those who are pregnant or nursing”, with such frequency that it can be hard to know what one can safely do/take while pregnant or nursing.
In the case of COVID vaccines, though, nearly 90% of babies who had to be hospitalized with COVID-19 had mothers who didn’t get the vaccine while they were pregnant.
And as for how common that is: babies too young to be vaccinated (so, under 6 months) had the highest covid hospitalization rate of any age group except people over 75.
Read in full: Here’s why getting a covid shot during pregnancy is important
Related: The Truth About Vaccines
Positive dieting
Adding things into one’s diet is a lot more fun than taking things out, is generally easier to sustain, and (as a general rule of thumb; there are exceptions of course) give the greatest differences in health outcomes.
This is perhaps most true of beans and pulses, which add many valuable vitamins, minerals, protein, and perhaps most importantly of all (single biggest factor in reducing heart disease risk), fiber.
Read in full: Adding beans and pulses can lead to improved shortfall nutrient intakes and a higher diet quality in American adults
Related: Intuitive Eating Might Not Be What You Think
Clearing out disordered thinking
Hoarding is largely driven by fear of loss, and this radical therapy tackles that at the root, by such means as rehearsing alternative outcomes of discarding through imagery rescripting, and examining the barriers to throwing things away—to break down those barriers one at a time.
Read in full: Hoarding disorder: sensory CBT treatment strategy shows promise
Related: When You Know What You “Should” Do (But Knowing Isn’t The Problem)
Superfluous
Fluoridated water may not be as helpful for the teeth as it used to be prior to about 1975. Not because it became any less effective per se, but because of the modern prevalence of fluoride-containing toothpastes, mouthwashes, etc rendering it redundant in more recent decades.
Read in full: Dental health benefits of fluoride in water may have declined, study finds
Related: Water Fluoridation, Atheroma, & More
Off-label?
With rising costs of living including rising healthcare costs, and increasing barriers to accessing in-person healthcare, it’s little wonder that many are turning to the gray market online to get their medications.
These websites typically use legal loopholes to sell prescription drugs to the public, by employing morally flexible doctors who are content to expediently rubber-stamp prescriptions upon request, on the basis of the patient having filled out a web form and checked boxes for their symptoms (and of course also having waived all rights of complaint or legal recourse).
However, some less scrupulous sorts are exploiting this market, to sell outright fake medications, using a setup that looks like a “legitimate” gray market website. Caveat emptor indeed.
Read in full: CDC warns of fake drug dangers from online pharmacies
Related: Are You Taking PIMs? Getting Off The Overmedication Train
A rising threat
In 2021 (we promise the paper was published only a few days ago!), the leading causes of death were:
- COVID-19
- Heart disease
- Stroke
…which latter represented a rising threat, likely in part due to the increase in the aging population.
Read in full: Stroke remains a leading cause of death globally, with increased risk linked to lifestyle factors
Related: 6 Signs Of Stroke (One Month In Advance)
Take care!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
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