Water Fluoridation, Atheroma, & More
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It’s Q&A Day 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!
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 watched a documentary recently on Fluoride in our drinking water & the dangers of it. Why are we poisoning our water?❞
This is a great question, and it certainly is controversial. It sounds like the documentary you watched was predominantly or entirely negative, but there’s a lot of science to back both sides of this, and it’s not even that the science is contradictory (it’s not). It’s that what differs is people’s opinions about whether benefiting one thing is worth creating a risk to another, and that means looking at:
- What is the risk associated with taking no action (error of omission)?
- What is the risk associated with taking an action (error of commission)?
The whole topic is worth a main feature, but to summarize a few key points:
- Water fluoridation is considered good for the prevention of dental cavities
- Water fluoridation aims to deliver fluoride and doses far below dangerous levels
- This requires working on consumer averages, though
- ”Where do we put the safety margins?” is to some extent a subjective question, in terms of trading off one aspect of health for another
- Too much fluoride can also be bad for the teeth (at least cosmetically, creating little white* spots)
- Detractors of fluoride tend to mostly be worried about neurological harm
- However, the doses in public water supplies are almost certainly far below the levels required to cause this harm.
- That said, again this is working on consumer averages, though.
- However, the doses in public water supplies are almost certainly far below the levels required to cause this harm.
- A good guide is: watch your teeth! Those white* spots will be “the canary in the coal mine” of more serious harm that could potentially come from higher levels due to overconsumption of fluorine.
*Teeth are not supposed to be pure white. The “Hollywood smile” is a lie. Teeth are supposed to be a slightly off-white, ivory color. Anything whiter than that is adding something else that shouldn’t be there, or stripping something off that should be there.
❝How does your diet change clean out your arteries of the bad cholesterol?❞
There’s good news and bad news here, and they can both be delivered with a one-word reply:
Slowly.
Or rather: what’s being cleaned out is mostly not the LDL (bad) cholesterol, but rather, the result of that.
When our diet is bad for cardiovascular health, our arteries get fatty deposits on their walls. Cholesterol gets stuck here too, but that’s not the main physical problem.
Our body’s natural defenses come into action and try to clean it up, but they (for example macrophages, a kind of white blood cell that consumes invaders and then dies, before being recycled by the next part of the system) often get stuck and become part of the buildup (called atheroma), which can lead to atherosclerosis and (if calcium levels are high) hardening of the arteries, which is the worst end of this.
This can then require medical attention, precisely because the body can’t remove it very well—especially if you are still maintaining a heart-unhealthy diet, thus continuing to add to the mess.
However, if it is not too bad yet, yes, a dietary change alone will reverse this process. Without new material being added to the arterial walls, the body’s continual process of rejuvenation will eventually fix it, given time (free from things making it worse) and resources.
In fact, your arteries can be one of the quickest places for your body to make something better or worse, because the blood is the means by which the body moves most things (good or bad) around the body.
All the more reason to take extra care of it, since everything else depends on it!
You might also like our previous main feature:
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Mung Beans vs Black Beans – Which is Healthier?
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Our Verdict
When comparing mung beans to black beans, we picked the black beans.
Why?
Both are great! But…
In terms of macros, black beans have more protein, carbs, and fiber, as well as the lower glycemic index (although both are already low). So, a clear win for black beans here.
In the category of vitamins, mung beans have more of vitamins A, B5, B9, and C, while black beans have more of vitamins B1, B6, E, K, and choline. Thus, a slight win for black beans this time.
When it comes to minerals, mung beans have more selenium and zinc, while black beans have more calcium, copper, iron, magnesium, manganese, phosphorus, and potassium. An easy win for black beans.
Of course, enjoy either or both—but if you’re going to pick one, we say black beans win the day.
Want to learn more?
You might like to read:
Plant vs Animal Protein: Head-to-Head
Take care!
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Unlimited Memory – by Kevin Horsley
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Premise: there are easily learnable techniques to rapidly (and greatly) improve one’s memory. We’ve touched on some of these methods before at 10almonds, but being a newsletter rather than a book, we’ve not been able to go as deeply into it as Horsley!
Your memory is far, far, far more powerful than you might realize, and this book will help unlock that. To illustrate…
Some of the book is given over to what are for most purposes “party tricks”, such as remembering pi to 10,000 places. Those things are fun, even if not as practical in today’s world of rarely needing to even know the actual digits of a phone number. However, they do also serve as a good example of just how much of “super memory” isn’t a matter of hard work, so much as being better organized about it.
Most of the book is focused on practical methods to improve the useful aspects of memory—including common mistakes!
If the book has any flaw it’s that the first chapter or so is spent persuading the reader of things we presumably already believe, given that we bought the book. For example, that remembering things is a learnable skill and that memory is functionally limitless. However, we still advise to not skip those chapters as they do contain some useful reframes as well.
Bottom line: if you read this book you will be astonished by how much you just learned—because you’ll be able to recall whole sections in detail! And then you can go apply that whatever areas of your life you wanted to when you bought the book.
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Hack Your Hunger
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.
When it comes to dealing with hunger, a common-sense way of dealing with it is “eat something”. However, many people find that they then eat the wrong things, in the wrong quantities, and end up in a cycle of overeating and being hungry.
If this gets to the extreme, it can turn into a full-blown eating disorder:
Eating Disorders: More Varied (And Prevalent) Than People Think
…and even in more moderate presentations, the cycle of hunger and overeating is not great for the health. So, how to avoid that?
Listen to your body (but: actually listen)
Your body says: we’re running a little low on glycogen reserves so our energy’s going to start suffering in a few hours if we don’t eat some fruit, kill something and eat its fatty organs, or perhaps find some oily nuts.
You hear: eat something bright and sugary, shout at the dog, eat some fried food, got it!
Your body says: our water balance is a little off, we could do with some sodium, potassium, and perhaps some phosphorus to correct it.
You hear: eat something salty, got it, potato chips coming right up!
…and so on. Now, we know 10almonds readers are quite a health-conscious readership, so perhaps your responses are not quite like that. But the take-away point is still important: we need to listen to the whole message, and give the body what it actually needs, not what will just shut the message off the most quickly.
Here’s how: Intuitive Eating Might Not Be What You Think
Bonus: Interoception: Improving Our Awareness Of Body Cues
About those cravings…
As illustrated a little above, a lot of cravings might not be what they first appear, and in evolutionary terms, our body is centuries behind industrialization, in terms of adaptations, which means that even if we try to take the above into account, our responses can sometimes be inappropriate in the age of supermarkets.
See also: The Science of Hunger, And How To Sate Cravings
Natural appetite suppressants
Eating more is not always the answer, not even if it’s more healthy food. And hunger pangs can be especially inconvenient if, for example, we are fasting at present, which is by the way a very healthful thing for most people:
Learn more: Intermittent Fasting: What’s the truth?
One way to suppress hunger is simply to trigger the stomach into sending “full” signals, which involves filling it. Since you do not want to overeat, the trick here is imply to use high-volume food.
Consider for example: 30 grapes and 30 raisins have approximately the same calorie count (what with raisins being dried grapes, and the calories didn’t evaporate), but the bowl of fresh fruit is going to physically fill your stomach a lot more quickly than the tiny amount of dried fruit.
More on this: Some Surprising Truths About Hunger And Satiety
Protein is of course also an appetite suppressant, but it takes about 20 minutes for the signal to kick in. So a “hack” here is to snack on something proteinous at least 15 minutes before your main meal (for example, a portion of nuts while cooking, unless you’re allergic, or some dried fish unless you’re vegetarian/vegan; you get it, pick something high in protein and good for snacking, and have a small portion before your main meal).
Nor is protein the only option!
See also: 3 Natural Appetite Suppressants Better Than Ozempic
Scale it down
Related to the above, there is a feedback loop that occurs here. The more you eat, the more your stomach slowly grows to accommodate it; the less you eat, the more your stomach slowly shrinks because the body tries hard to be an efficient organism, and will not maintain something that isn’t being used.
So, there’s a bit of a catch-22; sate your hunger by filling your stomach with high volume foods, but filling it will cause it to grow?
The trick is: do the “eat until 80% full” thing. That’s full enough that you have had a nice meal and are not suffering, without stretching the stomach.
Enjoy your food
Seriously! Actually enjoy it. Which means paying full attention to it. Eating can and should be a wonderful experience, so it’s best savored rather than inhaling a bowl of something in 30 seconds.
Have you seen those dog bowls that have obstructions to slow down how quickly a dog eats? We can leverage that kind of trick too! While you might not want to eat from a dog bowl, how about having a little bowl of pistachio nuts rather than ready-to-eat peanuts? Or any shelled nuts that we must shell as we go. If you’re allergic to nuts, there are plenty of other foods with a high work-to-food ratio. Take some time and enjoy that pomegranate, for instance!
Not that we necessarily have to make things difficult for ourselves either; we can just take appropriate care to ensure a good dining experience. Life is for living, so why not enjoy it?
See also: Mindful Eating: How To Get More Out Of What’s On Your Plate
Enjoy!
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Stop Using The Wrong Hairbrush For Your Hair Type
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.
When you brush your hair, you’re either making it healthier or damaging it, depending on what you’re using and how. To avoid pulling your hair out, and to enjoy healthy hair of whatever kind you have and whatever length suits you, it pays to know a little about different brushes, and the different techniques involved.
Head-to-head
Brush shapes and sizes are designed to achieve different effects in hair, not just for decoration. For example:
- Rat tail combs are excellent for parting and sectioning hair with clean lines. The rat tail part is actually more important than the comb part.
- Regular combs are multipurpose but best for use with flat irons, ensuring straighter hair for a longer time.
- Wide-tooth combs should not be used for detangling as they can cause breakage; instead, use a proper detangling brush. Speaking of detangling…
- Detangling brushes are essential for daily use. Whichever you use, start brushing from the bottom to prevent tangles from stacking and worsening. As for kinds of detangling brush:
- The “Tangle Teaser” is a good beginner option, but it may not detangle well for thicker hair.
- Wet Brush (this is a brand name, and is not about any inherent wetness) is the recommended detangling brush for most people. It can be used on wet or dry hair.
- Mason Pearson brush is a luxury detangling brush (see it here on Amazon) that works slightly more quickly and efficiently, but is expensive and not necessary for most people.
- Teasing brushes are for adding volume by backcombing—but require skill to prevent visible tangles. Best avoided for most people.
- Ceramic round brushes are the best for blow-drying, because they hold tension and help hair dry smoother and shinier.
- Blow-dryer brushes are great for easy blow-drying but should not be used on dry hair, to avoid damage.
- Denman brushes are for people with natural curls, enhancing curls without straightening them like a Wet brush would.
For more on all of these brushes, plus visual demonstrations, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Take care!
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Lifespan – by Dr. David Sinclair
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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!
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Keep Inflammation At Bay
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How to Prevent (or Reduce) Inflammation
You asked us to do a main feature on inflammation, so here we go!
Before we start, it’s worth noting an important difference between acute and chronic inflammation:
- Acute inflammation is generally when the body detects some invader, and goes to war against it. This (except in cases such as allergic responses) is usually helpful.
- Chronic inflammation is generally when the body does a civil war. This is almost never helpful.
We’ll be tackling the latter, which frees up your body’s resources to do better at the former.
First, the obvious…
These five things are as important for this as they are for most things:
- Get a good diet—the Mediterranean diet is once again a top-scorer
- Exercise—move and stretch your body; don’t overdo it, but do what you reasonably can, or the inflammation will get worse.
- Reduce (or ideally eliminate) alcohol consumption. When in pain, it’s easy to turn to the bottle, and say “isn’t this one of red wine’s benefits?” (it isn’t, functionally*). Alcohol will cause your inflammation to flare up like little else.
- Don’t smoke—it’s bad for everything, and that goes for inflammation too.
- Get good sleep. Obviously this can be difficult with chronic pain, but do take your sleep seriously. For example, invest in a good mattress, nice bedding, a good bedtime routine, etc.
*Resveratrol (which is a polyphenol, by the way), famously found in red wine, does have anti-inflammatory properties. However, to get enough resveratrol to be of benefit would require drinking far more wine than will be good for your inflammation or, indeed, the rest of you. So if you’d like resveratrol benefits, consider taking it as a supplement. Superficially it doesn’t seem as much fun as drinking red wine, but we assure you that the results will be much more fun than the inflammation flare-up after drinking.
About the Mediterranean Diet for this…
There are many causes of chronic inflammation, but here are some studies done with some of the most common ones:
- Beneficial effect of Mediterranean diet in systemic lupus erythematosus patients
- How the Mediterranean diet and some of its components modulate inflammatory pathways in arthritis
- The effects of the Mediterranean diet on biomarkers of vascular wall inflammation and plaque vulnerability in subjects with high risk for cardiovascular disease
- Adherence to Mediterranean diet and 10-year incidence of diabetes: correlations with inflammatory and oxidative stress biomarkers*
*Type 1 diabetes is a congenital autoimmune disorder, as the pancreas goes to war with itself. Type 2 diabetes is different, being a) acquired and b) primarily about insulin resistance, and/but this is related to chronic inflammation regardless. It is also possible to have T1D and go on to develop insulin resistance, and that’s very bad, and/but beyond the scope of today’s newsletter, in which we are focusing on the inflammation aspects.
Some specific foods to eat or avoid…
Eat these:
- Leafy greens
- Cruciferous vegetables
- Tomatoes
- Fruits in general (berries in particular)
- Healthy fats, e.g. olives and olive oil
- Almonds and other nuts
- Dark chocolate (choose high cocoa, low sugar)
Avoid these:
- Processed meats (absolute worst offenders are hot dogs, followed by sausages in general)
- Red meats
- Sugar (includes most fruit juices, but not most actual fruits—the difference with actual fruits is they still contain plenty of fiber, and in many cases, antioxidants/polyphenols that reduce inflammation)
- Dairy products (unless fermented, in which case it seems to be at worst neutral, sometimes even a benefit, in moderation)
- White flour (and white flour products, e.g. white bread, white pasta, etc)
- Processed vegetable oils
See also: 9 Best Drinks To Reduce Inflammation, Says Science
Supplements?
Some supplements that have been found to reduce inflammation include:
(links are to studies showing their efficacy)
Consider Intermittent Fasting
Remember when we talked about the difference between acute and chronic inflammation? It’s fair to wonder “if I reduce my inflammatory response, will I be weakening my immune system?”, and the answer is: generally, no.
Often, as with the above supplements and dietary considerations, reducing inflammation actually results in a better immune response when it’s actually needed! This is because your immune system works better when it hasn’t been working in overdrive constantly.
Here’s another good example: intermittent fasting reduces the number of circulating monocytes (a way of measuring inflammation) in healthy humans—but doesn‘t compromise antimicrobial (e.g. against bacteria and viruses) immune response.
See for yourself: Dietary Intake Regulates the Circulating Inflammatory Monocyte Pool ← the study is about the anti-inflammatory effects of fasting
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