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.
  • 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:

All Things Heart Health

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  • Avoiding Razor Burn, Ingrown Hairs & Other Shaving Irritation

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    How Does The Video Help?

    Dr. Simi Adedeji’s incredibly friendly persona makes this video (below) on avoiding skin irritation, ingrown hairs, and razor burn after shaving a pleasure to watch.

    To keep things simple, she breaks down her guide into 10 simple tips.

    What Are The 10 Simple Tips?

    Tip 1: Prioritize Hydration. Shaving dry hair can lead to increased skin irritation, so Dr. Simi recommends moistening the hair by showering or using a warm, wet towel for 2-4 minutes before getting the razor out.

    Tip 2: Avoid Dry Shaving. Dry shaving not only removes hair but can also remove the protective upper layer of skin, which contributes to razor burn. To prevent this, simply use some shaving gel or cream.

    Tip 3: Keep Blades New and Sharp. This one’s simple: dull blades can cause skin irritation, whilst a sharp blade ensures a smoother and more comfortable shaving experience.

    Tip 4: Avoid Shaving the Same Area Repeatedly. Multiple passes over the same area can remove skin layers, leading to cuts and irritation. Aim to shave each area only once for safer results.

    Tip 5: Consider Hair Growth Direction. Shaving in the direction of hair growth results in less irritation, although it may not provide the closest shave.

    Tip 6: Apply Gentle Pressure While Shaving. Excessive pressure can lead to cuts and nicks. Use a gentle touch to reduce these risks.

    Tip 7: Incorporate Exfoliation into Your Routine. Exfoliating helps release trapped hairs and reduces the risk of ingrown hairs. For those with sensitive skin, it’s recommended to exfoliate either two days before or after shaving.

    Tip 8: Avoid Excessive Skin Stretching. Over-stretching the skin during shaving can cause hairs to become ingrown.

    Tip 9: Moisturize After Shaving. Shaving can compromise the skin barrier, leading to dryness. Using a moisturizer can be a simple fix.

    Tip 10: Regularly Rinse Your Blade. Make sure that, during the shaving process, you are rinsing your blade frequently to remove hair and skin debris. This keeps it sharp during your shave.

    If this summary doesn’t do it for you, then you can watch the full video here:

    How did you find that video? If you’ve discovered any great videos yourself that you’d like to share with fellow 10almonds readers, then please do email them to us!

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  • To Err Is Human; To Forgive, Healthy

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    How To Forgive (And Why)

    There’s an old saying that holding onto a grudge is like drinking poison and expecting the other person to die. If only it were so simple and easy as just choosing to let go!

    But it’s not, is it?

    When people have wronged us and/or wronged our loved ones, it’s hard to forgive, especially if they have not changed. For that matter, it can be hard to forgive ourselves for mistakes that we made, too.

    Either way, “drinking that poison” can be close to literal, in terms of what harboring such anger and resentment can do for our cortisol levels.

    So, what to do about it?

    If you have a dialogue with the person, our previous article on communication may help a lot.

    If you don’t, there are various other angles that can be taken:

    The Unsent Letter

    You can even send it, if you like, but it’s not the point here. The idea is to write to the person, expressing your grievances. But, (as per the above-linked article on communication) try to focus at least as much on your feelings as their actions. “When you did/said x, I felt y”, etc.

    This is important for helping you process your feelings. If you send the letter, it’s also important for the other person to be able to understand your feelings.

    Sometimes, we feel the things we do so strongly because we don’t have an outlet for them. Pouring out our emotions in such a fashion, on the other hand, means (to labor the metaphor) they’re no longer bottled up. Even just in and of itself, that can provide us a lot of relief.

    And when we the negative emotions are no longer such high pressure, it can be easier to let go of them.

    Mindfulness

    Following on from the above idea, a good strategy can be simply sitting and feeling everything you need to feel, noticing it without judgement, like a curious observer.

    Sometimes what we need is just to be heard, and that starts with hearing ourselves.

    Compassion

    There’s a Buddhist exercise that involves actively feeling compassion for three people: a loved one, a stranger, and an enemy. Many people report that it’s actually harder to feel compassion for a random stranger, than an enemy. Why? Because we don’t know them; we don’t know what’s good and bad about them in our estimation.

    If you’re reading this because you want to be able to gain the peace of being able to forgive someone (even if that someone is yourself), then in at least some respect right now, that person is in the “enemy” category. So how do we unpack that?

    To err is human. Everybody screws up sometimes. And also, everyone has a reason (or a complex of reasons) for acting the way they do. This does not mean that those reasons excuse the behavior, but it can explain it.

    You don’t get angry at a storm for soaking you through. Even if you might not understand the physics of it in the way a meteorologist might, you understand that there were things that led to that, and you were just in the wrong place at the wrong time.

    So why do we get angry at someone else for wronging us? Even if we might not understand the personal background of it in the way their psychologist or therapist might, we (hopefully) understand that there were things that caused them to be the way they were, and we were just in the wrong place at the wrong time.

    And ourselves? We probably know, when we made a mistake, why we made it. Maybe we were afraid, insecure, reactive, forgetful, or too focused on some other thing. Whatever it was, we did our best at the time and, apparently, our best wasn’t as good as we’d like.

    If we didn’t deserve forgiveness, we wouldn’t be critical of our past selves in the first place.

    And, the science is very clear that it’s important for our health for other reasons besides cortisol management, too.

    And as for others? They did the best they knew how. Maybe they were afraid, insecure, reactive, forgetful, or too focused on some other thing. Same story, different character.

    Remembering that can be key to “accepting the apology we never received”.

    Forgiving without forgetting

    Developing the ability to forgive is a useful tool for our own mental health. It doesn’t mean we must or even should make ourselves a doormat.

    “I forgive you” does not have to mean a clean slate; it means remembering that the thing happened, and just not holding on to the anger/resentment associated with it.

    It may be water under the bridge now, but it might have been a devastatingly destructive wave at the time, and continuing to acknowledge truth that is sensible. Just, from a position of peace now, hopefully.

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  • 5 Self-Care Trends That Are Actually Ruining Your Mental Health

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    Ok, some of these are trends; some are more perennial to human nature. For example, while asceticism is not a new idea, the “dopamine detox” is, and “bed rotting” is not a trend that this writer has seen recommended anywhere, but on the other hand, there are medieval illustrations of it—there was no Netflix in sight in the medieval illustrations, but perhaps a label diagnosing it as “melancholy”, for example.

    So without further ado, here are five things to not do…

    Don’t fall into these traps

    The 5 things to watch out for are:

    1. Toxic positivity: constantly promoting positivity regardless of the reality of a situation can shame or invalidate genuine emotions, preventing people from processing their real feelings and leading to negative mental health outcomes—especially if it involves a “head in sand” approach to external problems as well as internal ones (because then those problems will never actually get dealt with).
    2. Self-indulgence: excessive focus on personal desires can make you more self-centered, less disciplined, and ultimately dissatisfied, which hinders personal growth and mental wellness.
    3. Bed rotting: spending prolonged time in bed for relaxation or entertainment can decrease motivation, productivity, and lead to (or worsen) depression rather than promoting genuine rest and rejuvenation.
    4. Dopamine detox: abstaining from pleasurable activities to “reset” the brain simply does not work and can lead to loneliness, boredom, and worsen mental health, especially when done excessively.
    5. Over-reliance on self-help: consuming too much self-help content or relying on material possessions for well-being can lead to information overload, unrealistic expectations, and the constant need for self-fixing, rather than fostering self-acceptance and authentic growth. Useful self-help can be like taking your car in for maintenance—counterproductive self-help is more like having your car always in for maintenance and never actually on the road.

    For more on all of these, enjoy:

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

    Want to learn more?

    You might also like to read, and yes these are pretty much one-for-one with the 5 items above, doing a deeper dive into each in turn,

    1. How To Get Your Brain On A More Positive Track (Without Toxic Positivity)
    2. Self-Care That’s Not Just Self-Indulgence
    3. The Mental Health First-Aid That You’ll Hopefully Never Need
    4. The Dopamine Myth
    5. Behavioral Activation Against Depression & Anxiety

    Take care!

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  • Simply The Pits: These Underarm Myths!

    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.

    Are We Taking A Risk To Smell Fresh As A Daisy?

    Yesterday, we asked you for your health-related view of underarm deodorants.

    So, what does the science say?

    They can cause (or increase risk of) cancer: True or False?

    False, so far as we know. Obviously it’s very hard to prove a negative, but there is no credible evidence that deodorants cause cancer.

    The belief that they do comes from old in vitro studies applying the deodorant directly to the cells in question, like this one with canine kidney tissues in petri dishes:

    Antiperspirant Induced DNA Damage in Canine Cells by Comet Assay

    Which means that if you’re not a dog and/or if you don’t spray it directly onto your internal organs, this study’s data doesn’t apply to you.

    In contrast, more modern systematic safety reviews have found…

    ❝Neither is there clear evidence to show use of aluminum-containing underarm antiperspirants or cosmetics increases the risk of Alzheimer’s Disease or breast cancer.

    Metallic aluminum, its oxides, and common aluminum salts have not been shown to be either genotoxic or carcinogenic.

    Source: Systematic review of potential health risks posed by pharmaceutical, occupational and consumer exposures to metallic and nanoscale aluminum, aluminum oxides, aluminum hydroxide and its soluble salts

    (however, one safety risk it did find is that we should avoid eating it excessively while pregnant or breastfeeding)

    Alternatives like deodorant rocks have fewer chemicals and thus are safer: True or False?

    True and False, respectively. That is, they do have fewer chemicals, but cannot in scientific terms be qualifiably, let alone quantifiably, described as safer than a product that was already found to be safe.

    Deodorant rocks are usually alum crystals, by the way; that is to say, aluminum salts of various kinds. So if it was aluminum you were hoping to avoid, it’s still there.

    However, if you’re trying to cut down on extra chemicals, then yes, you will get very few in deodorant rocks, compared to the very many in spray-on or roll-on deodorants!

    Soap and water is a safe, simple, and sufficient alternative: True or False?

    True or False, depending on what you want as a result!

    • If you care that your deodorant also functions as an antiperspirant, then no, soap and water will certainly not have an antiperspirant effect.
    • If you care only about washing off bacteria and eliminating odor for the next little while, then yes, soap and water will work just fine.

    Bonus myths:

    There is no difference between men’s and women’s deodorants, apart from the marketing: True or False?

    False! While to judge by the marketing, the only difference is that one smells of “evening lily” and the other smells of “chainsaw barbecue” or something, the real difference is…

    • The “men’s” kind is designed to get past armpit hair and reach the skin without clogging the hair up.
    • The “women’s” kind is designed to apply a light coating to the skin that helps avoid chafing and irritation.

    In other words… If you are a woman with armpit hair or a man without, you might want to ignore the marketing and choose according to your grooming preferences.

    Hopefully you can still find a fragrance that suits!

    Shaving (or otherwise depilating) armpits is better for hygiene: True or False?

    True or False, depending on what you consider “hygiene”.

    Consistent with popular belief, shaving means there is less surface area for bacteria to live. And empirically speaking, that means a reduction in body odor:

    A comparative clinical study of different hair removal procedures and their impact on axillary odor reduction in men

    However, shaving typically causes microabrasions, and while there’s no longer hair for the bacteria to enjoy, they now have access to the inside of your skin, something they didn’t have before. This can cause much more unpleasant problems in the long-run, for example:

    ❝Hidradenitis suppurativa is a chronic and debilitating skin disease, whose lesions can range from inflammatory nodules to abscesses and fistulas in the armpits, groin, perineum, inframammary region❞

    Read more: Hidradenitis suppurativa: Basic considerations for its approach: A narrative review

    And more: Hidradenitis suppurativa: Epidemiology, clinical presentation, and pathogenesis

    If this seems a bit “damned if you do; damned if you don’t”, this writer’s preferred way of dodging both is to use electric clippers (the buzzy kind, as used for cutting short hair) to trim hers down low, and thus leave just a little soft fuzz.

    What you do with yours is obviously up to you; our job here is just to give the information for everyone to make informed decisions whatever you choose 🙂

    Take care!

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  • Awakening Your Ikigai – by Dr. Ken Mogi

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    It’s been well-established in supercentenarian studies that one of the key factors beyond diet or exercise or suchlike (important as those things definitely are), is having a purpose to one’s life.

    Neuroscientist Dr. Ken Mogi explains in this very easy-to-read book, how we can bring ikigai into our lives.

    From noticing the details of the small things in life, to reorienting one’s life around what’s most truly most important to us, Dr. Mogi gives us not just a “this is ikigai” exposé, but rather, a practical and readily applicable how-to guide.

    Bottom line: if you’ve so far been putting off ikigai as “I’ll get to that”, the time to start is today.

    Click here to check out Awakening Your Ikigai, and actually awaken yours!

    Don’t Forget…

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  • Why You’re Tired & How To Fix It

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    This is Sadia Badiei. A dietician by academic and professional background, she’s nowadays hung up her lab coat for a chef’s jacket, and is best known for her “Pick Up Limes” brand. Today, we’ll be taking her advice on managing energy levels with what’s on our plates!

    Quick note: our usual medical/legal disclaimer applies, and this article cannot diagnose you from afar, and thus neither can it make any certain prescription; this is for educational purposes, and aimed at being applicable to most of our readers.

    There are many possible things that can cause chronic fatigue, and not all of them can be fixed by diet. Your doctor will have access to tests and such that we, being a humble health science publication, do not.

    You may recognize her; we’ve featured her videos occasionally, mostly recently:

    Pick Up A Zest For Life: 10 Lessons For A Healthy Mind & Body

    But, what does she want us to know about living life with more energy?

    It starts with balance

    Badiei makes the case that we should strive for a nutritionally-balanced diet; that may not come as much of a revelation, but what does that look like for a vegan (Badiei advocates for plant-based eating)?

    She recommends that our diet consist of:

    • About 50% fruits and vegetables
    • About 25% grains and starches
    • About 25% proteins
    • Modest amounts of fats
    • A little of well-chosen dairy substitutions
    • Finally, a few judicious supplements to top it off

    That does add up to more than 100%, but 1) we did say “About n%” and 2) this is not a bad thing to note, actually, since Badiei advocates (as we do) for focussing more on what we add into our diet, rather than what we take out.

    Breaking it down a little further, she recommends making sure to get “the foundational seven”, which is a little like “Dr. Greger’s Daily Dozen”, but in this case it’s counted on a per-food-type basis.

    Thus, she recommends:

    1. Dark green leafy vegetables
    2. Assorted other non-starchy vegetables (your choice what kind)
    3. Fruit, of any kinds (unlike Dr. Greger separating berries)
    4. Grains and starches (so for example, potatoes are lumped in with rice here, botanically very different, but often fulfil a similar culinary role)
    5. Nuts and seeds
    6. Legumes
    7. Fortified dairy alternatives

    For full details including how much of each, and “what counts”, etc, see:

    Pick Up Limes | The Nourish Method

    Time your carbs

    Slow-release carbohydrates, those with the most fiber, are best most of the time, giving us more sustained fuel, keeping us energized for longer after meals—even if we would rather sleep:

    She cites: Fiber and Saturated Fat Are Associated with Sleep Arousals and Slow Wave Sleep

    Quick-release carbohydrates, those with what’s generally considered a less favorable carb:fiber ratio, are best if we’re going to eat nearer to bedtime. We know, eating before bed is often considered a bit of a no-no, but Badiei bids us indulge if we so desire, as the quicker-absorbed carbohydrates support tryptophan reaching our brain more efficiently, and thus promote sleep onset.

    See also: Should You Go Light Or Heavy On Carbs?

    About that fat

    We mentioned (or rather, Badiei’s citation mentioned) saturated fat. It is indeed linked with difficulty falling asleep, and/but omega-3 fatty acids, on the other hand, promote better sleep.

    She cites: The relationship between sleep duration, sleep quality and dietary intake in adults

    While you’re enjoying those nuts and seeds (for the omega-3 fatty acids), you might also note that several also star in Badiei’s list of plant-based foods that are rich in tryptophan, such as soy, cashews, pumpkin seeds, sunflower seeds, beans, green vegetables, and mushrooms.

    Micronutrients

    Badiei’s focus here is on B-vitamins, iron, magnesium, selenium, and zinc. We imagine most of our readers here are taking steps to ensure to get a full daily coverage of vitamins and minerals anyway, but you might want to read what she has to say about iron on a plant-based diet, because the numbers may be different than you think.

    The reason for this is that while animal products contain mostly heme iron, which is easier to absorb but associated with a risk increase in some diseases, plant-based foods usually* contain only non-heme iron, which is healthier but not as bioavailable, so if eating only plants, we need more of it:

    Pick Up Limes | Iron on a Plant-Based Diet

    *If you eat a carnivorous plant, guess what, it’ll have heme iron in it, tangling that food web.

    “What if I know I have chronic fatigue for non-dietary reasons?”

    Well, that sucks, and we’re not going to pretend the above will magically fix it. However, there are still things that can at least relatively improve your experience:

    Eat To Beat Chronic Fatigue! Yes, Even When Fatigued Chronically

    (it’s a good guide to being able to consistently eat healthily when your energy levels are consistently at minimal, meaning that a lot of common advice becomes unusable)

    Take care!

    Don’t Forget…

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    Learn to Age Gracefully

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