Toothpastes & Mouthwashes: Which Help And Which Harm?

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Toothpastes and mouthwashes: which kinds help, and which kinds harm?

You almost certainly brush your teeth. You might use mouthwash. A lot of people floss for three weeks at a time, often in January.

There are a lot of options for oral hygiene; variations of the above, and many alternatives too. This is a big topic, so rather than try to squeeze it all in one, this will be a several-part series.

For today, let’s look at toothpastes and mouthwashes, to start!

Toothpaste options

Toothpastes may contain one, some, or all of the following, so here are some notes on those:

Fluoride

Most toothpastes contain fluoride; this is generally recognized as safe though is not without its controversies. The fluoride content is the reason it’s recommended not to swallow toothpaste, though.

The fluoride in toothpaste can cause some small problems if overused; if you see unusually white patches on your teeth (your teeth are supposed to be ivory-colored, not truly white), that is probably a case of localized overcalcification because of the fluoride, and yes, you can have too much of a good thing.

Overall, the benefits are considered to far outweigh the risks, though.

Baking soda

Whether by itself or as part of a toothpaste, baking soda is a safe and effective choice, not just for cosmetic purposes, but for boosting genuine oral hygiene too:

Activated charcoal

Activated charcoal is great at removing many chemicals from things it touches. That includes the kind you might see on your teeth in the form of stains.

A topical aside on safety: activated charcoal is a common ingredient in a lot of black-colored Halloween-themed foods and drinks around this time of year. Beware, if you ingest these, there’s a good chance of it also cleaning out any meds you are taking. Ask your pharmacist about your own personal meds, but meds that (ingested) activated charcoal will usually remove include:

  • Oral HRT / contraceptives
  • Antidepressants (many kinds)
  • Heart medications (at least several major kinds)

Toothpaste, assuming you are spitting-not-swallowing, won’t remove your medications though. Nor, in case you were worrying, will it strip tooth enamel, even if you have extant tooth enamel erosion:

Source: Activated charcoal toothpastes do not increase erosive tooth wear

However, it’s of no special extra help when it comes to oral hygiene itself, just removing stains.

So, if you’d like to use it for cosmetic reasons, go right ahead. If not, no need.

Hydrogen peroxide

This is generally not a good idea, speaking for the health. For whitening, yes, it works. But for health, not so much:

Hydrogen peroxide-based products alter inflammatory and tissue damage-related proteins in the gingival crevicular fluid of healthy volunteers: a randomized trial

To be clear, when they say “alter”, they mean “in a bad way”. It increases inflammation and tissue damage.

If buying commercially-available whitening toothpaste made with hydrogen peroxide, the academic answer is that it’s a lottery, because brands’ proprietorial compounding processes vary widely and constantly with little oversight and even less transparency:

Is whitening toothpaste safe for dental health?: RDA-PE method

Mouthwash options

In the case of fluoride and hydrogen peroxide, the same advice (for and against) goes as per toothpaste.

Alcohol

There has been some concern about the potential carcinogenic effect of alcohol-based mouthwashes. According to the best current science, this one’s not an easy yes-or-no, but rather:

  • If there are no other cancer risk factors, it does not seem to increase cancer risk
  • If there are other cancer risk factors, it does make the risk worse

Read more:

Non-Alcohol

Non-alcoholic mouthwashes are not without their concerns either. In this case, the potential problem is changing the oral microbiome (we are supposed to have one!), and specifically, that the spread of what it kills and what it doesn’t may result in an imbalance that causes a lowering of the pH of the mouth.

Put differently: it makes your saliva more acidic.

Needless to say, that can cause its own problems for teeth. The research on this is still emerging, with regard to whether the benefits outweigh the problems, but the fact that it has this effect seems to be a consensus. Here’s an example paper; there are others:

Effects of Chlorhexidine mouthwash on the oral microbiome

Flossing, scraping, and alternatives

These are important (and varied, and interesting) enough to merit their own main feature, rather than squeezing them in at the end.

So, watch this space for a main feature on these soon!

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  • 7 Invisible Eating Disorders

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    It’s easy to assume that anyone with an eating disorder can be easily recognized by the resultantly atypical body composition, but it’s often not so.

    Beyond the obvious

    We’ll not keep them a mystery; the 7 invisible eating disorders discussed by therapist Kati Morton in this video are:

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    • Atypical Bulimia: similar to bulimia nervosa, but the frequency or duration of binge-purge behaviors does not meet the usual diagnostic criteria and thus can fly under the radar.
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  • Taurine: An Anti-Aging Powerhouse? Exploring Its Unexpected Benefits

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    Dr. Mark Rosenberg explains:

    Not a stimulant, but…

    • Its presence in energy drinks often causes people to assume it’s a stimulant, but it’s not. In fact, it’s a GABA-agonist, thus having a calming effect.
    • The real reason it’s in energy drinks is because it helps increase mitochondrial ATP production (ATP = adenosine triphosphate = how cells store energy that’s ready to use; mitochondria take glucose and make ATP)
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  • Three Critical Kitchen Prescriptions

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    Three Critical Kitchen Prescriptions

    This is Dr. Saliha Mahmood-Ahmed. She’s a medical doctor—specifically, a gastroenterologist. She’s also a chef, and winner of the BBC’s MasterChef competition. So, from her gastroenterology day-job and her culinary calling, she has some expert insights to share on eating well!

    ❝Food and medicine are inextricably linked to one another, and it is an honour to be a doctor who specialises in digestive health and can both cook, and teach others to cook❞

    ~ Dr. Saliha Mahmood-Ahmed, after winning MasterChef and being asked if she’d quit medicine to be a full-time chef

    Dr. Mahmood-Ahmed’s 3 “Kitchen Prescriptions”

    They are:

    1. Cook, cook, cook
    2. Feed your gut bugs
    3. Do not diet

    Let’s take a look at each of those…

    Cook, cook, cook

    We’re the only species on Earth that cooks food. An easy knee-jerk response might be to think maybe we shouldn’t, then, but… We’ve been doing it for at least 30,000 years, which is about 1,500 generations, while a mere 100 generations is generally sufficient for small evolutionary changes. So, we’ve evolved this way now.

    More importantly in this context: we, ourselves, should cook our own food, at least per household.

    Not ready meals; we haven’t evolved for those (yet! Give it another few hundred generations maybe)

    Feed your gut bugs

    The friendly ones. Enjoy prebiotics, probiotics, and plenty of fiber—and then be mindful of what else you do or don’t eat. Feeding the friendly bacteria while starving the unfriendly ones may seem like a tricky task, but it actually can be quite easily understood and implemented. We did a main feature about this a few weeks ago:

    Making Friends With Your Gut (You Can Thank Us Later)

    Do not diet

    Dr. Mahmood-Ahmed is a strong critic of calorie-counting as a weight-loss strategy:

    Rather than focusing on the number of calories consumed, try focusing on introducing enough variety of food into your daily diet, and on fostering good microbial diversity within your gut.

    It’s a conceptual shift from restrictive weight loss, to prescriptive adding of things to one’s diet, with fostering diversity of microbiota as a top priority.

    This, too, she recommends be undertaken gently, though—making small, piecemeal, but sustainable improvements. Nobody can reasonably incorporate, say, 30 new fruits and vegetables into one’s diet in a week; it’s unrealistic, and more importantly, it’s unsustainable.

    Instead, consider just adding one new fruit or vegetable per shopping trip!

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  • Early Bird Or Night Owl? Genes vs Environment

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    A Sliding Slope?

    In Tuesday’s newsletter, we asked you how much control you believe we have over our sleep schedule, and got the above-depicted, below-described, set of responses:

    • 45% said “most people can control it; some people with sleep disorders cannot
    • 35% said “our genes predispose us to early/late, but we can slide it a bit
    • 15% said: “going against our hardwired sleep schedules is a road to ruin”
    • 5% said “anyone can adjust their sleep schedule with enough willpower”

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    However, those are the responses we got, so here we are!

    What does the science say?

    Anyone can adjust their sleep with enough willpower: True or False?

    False, simply. It’s difficult for most people, but for many people with sleep disorders, it is outright impossible.

    In a battle of narcolepsy vs willpower, for example, no amount of willpower will stop the brain from switching to sleep mode when it thinks it’s time to sleep:

    ❝Narcolepsy is the most common neurological cause of chronic sleepiness. The discovery about 20 years ago that narcolepsy is caused by selective loss of the neurons producing orexins sparked great advances in the field

    [There is also] developing evidence that narcolepsy is an autoimmune disorder that may be caused by a T cell-mediated attack on the orexin neurons and explain how these new perspectives can inform better therapeutic approaches.❞

    ~ Dr. Carrie Mahoney et al. (lightly edited for brevity)

    Source: The neurobiological basis of narcolepsy

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    Our genes predispose us to early/late, but we can slide it a bit: True or False?

    True! First, about our genes predisposing us:

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    …and also:

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    Going against our hardwired sleep schedule is a road to ruin: True or False?

    False, contextually. By this we mean: our “hardwired” sleep schedule is (for most of us), genetically predisposed but not predetermined.

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    Some genetic predispositions are just plain bad for us, and genes can be a bit of a lottery.

    That said, we do recommend getting some insider knowledge (literally), by getting personal genomics tests done, if that’s a viable option for you, so you know what’s really a genetic trait (and what to do with that information) and what’s probably caused by something else (and what to do with that information):

    Genetic Testing: Health Benefits & Methods

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    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

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