Twenty-One, No Wait, Twenty Tweaks For Better Health
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Dr. Greger’s 21 Tweaks… We say 20, though!
We’ve talked before about Dr. Greger’s Daily Dozen (12 things he advises that we make sure to eat each day, to enjoy healthy longevity), but much less-talked-about are his “21 Tweaks”…
They are, in short, a collection of little adjustments one can make for better health. Some of them are also nutritional, but many are more like lifestyle tweaks. Let’s do a rundown:
At each meal:
- Preload with water
- Preload with “negative calorie” foods (especially: greens)
- Incorporate vinegar (1-2 tbsp in a glass of water will slow your blood sugar increase)
- Enjoy undistracted meals
- Follow the 20-minute rule (enjoy your meal over the course of at least 20 minutes)
Get your daily doses:
- Black cumin ¼ tsp
- Garlic powder ¼ tsp
- Ground ginger (1 tsp) or cayenne pepper (½ tsp)
- Nutritional yeast (2 tsp)
- Cumin (½ tsp)
- Green tea (3 cups)
Every day:
- Stay hydrated
- Deflour your diet
- Front-load your calories (this means implementing the “king, prince, pauper” rule—try to make your breakfast the largest meal of your day, followed my a medium lunch, and a small evening meal)
- Time-restrict your eating (eat your meals within, for example, an 8-hour window, and fast the rest of the time)
- Optimize exercise timing (before breakfast is best for most people, unless you are diabetic)
- Weigh yourself twice a day (doing this when you get up and when you go to bed results in much better long-term weight management than weighing only once per day)
- Complete your implementation intentions (this sounds a little wishy-washy, but it’s about building a set of “if this, then that” principles, and then living by them. An example could be directly physical health-related such as “if there is a choice of stairs or elevator, I will take the stairs”, or could be more about holistic good-living, such as “if someone asks me for help, I will try to oblige them so far as I reasonably can”)
Every night:
- Fast after 7pm
- Get sufficient sleep (7–9 hours is best. As we get older, we tend more towards the lower end of that, but try get at least those 7 hours!)
Experiment with Mild Trendelenburg(better yet, skip this one)*
*This involves a 6º elevation of the bed, at the foot end. Dr. Greger advises that this should only be undertaken after consulting your doctor, though, as a lot of health conditions can contraindicate it. We at 10almonds couldn’t find any evidence to support this practice, and numerous warnings against it, so we’re going to go ahead and say we think this one’s skippable.
Again, we do try to bring you the best evidence-based stuff here at 10almonds, and we’re not going to recommend something just because of who suggested it
As for the rest, you don’t have to do them all! And you may have noticed there was a little overlap in some of them. But, we consider them a fine menu of healthy life hacks from which to pick and choose!
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Dr. Greger’s Anti-Aging Eight
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Dr. Greger’s Anti-Aging Eight
This is Dr. Michael Greger. We’ve featured him before: Brain Food? The Eyes Have It!
This time, we’re working from his latest book, the excellent “How Not To Age”, which we reviewed all so recently. It is very information-dense, but we’re going to be focussing on one part, his “anti-aging eight”, that is to say, eight interventions he rates the most highly to slow aging in general (other parts of the book pertained to slowing eleven specific pathways of aging, or preserving specific bodily functions against aging, for example).
Without further ado, his “anti-aging eight” are…
- Nuts
- Greens
- Berries
- Xenohormesis & microRNA manipulation
- Prebiotics & postbiotics
- Caloric restriction / IF
- Protein restriction
- NAD+
As you may have noticed, some of these are things might appear already on your grocery shopping list; others don’t seem so “household”. Let’s break them down:
Nuts, greens, berries
These are amongst the most nutrient-dense and phytochemical-useful parts of the diet that Dr. Greger advocates for in his already-famous “Dr. Greger’s Daily Dozen”.
For brevity, we’ll not go into the science of these here, but will advise you: eat a daily portion of nuts, a daily portion of berries, and a couple of daily portions of greens.
Xenohormesis & microRNA manipulation
You might, actually, have these on your grocery shopping list too!
Hormesis, you may recall from previous editions of 10almonds, is about engaging in a small amount of eustress to trigger the body’s self-strengthening response, for example:
Xenohormesis is about getting similar benefits, second-hand.
For example, plants that have been grown to “organic” standards (i.e. without artificial pesticides, herbicides, fertilizers) have had to adapt to their relatively harsher environment by upping their levels of protective polyphenols and other phytochemicals that, as it turns out, are as beneficial to us as they are to the plants:
Hormetic Effects of Phytochemicals on Health and Longevity
Additionally, the flip side of xenohormesis is that some plant compounds can themselves act as a source of hormetic stress that end up bolstering us. For example:
In essence, it’s not just that it has anti-oxidant effect; it also provides a tiny oxidative-stress immunization against serious sources of oxidative stress—and thus, aging.
MicroRNA manipulation is, alas, too complex to truly summarize an entire chapter in a line or two, but it has to do with genetic information from the food that we eat having a beneficial or deleterious effect to our own health:
Diet-derived microRNAs: unicorn or silver bullet?
A couple of quick takeaways (out of very many) from Dr. Greger’s chapter on this is to spring for the better quality olive oil, and skip the cow’s milk:
- Impact of Phenol-Enriched Virgin Olive Oils on the Postprandial Levels of Circulating microRNAs Related to Cardiovascular Disease
- MicroRNA exosomes of pasteurized milk: potential pathogens of Western diseases
Prebiotics & Postbiotics
We’re short on space, so we’ll link you to a previous article, and tell you that it’s important against aging too:
Making Friends With Your Gut (You Can Thank Us Later)
An example of how one of Dr. Greger’s most-recommended postbiotics helps against aging, by the way:
- The mitophagy activator urolithin A is safe and induces a molecular signature of improved mitochondrial and cellular health in humans
- Urolithin A improves muscle strength, exercise performance, and biomarkers of mitochondrial health in a randomized trial in middle-aged adults
(Urolithin can be found in many plants, and especially those containing tannins)
See also: How to Make Urolithin Postbiotics from Tannins
Caloric restriction / Intermittent fasting
This is about lowering metabolic load and promoting cellular apoptosis (programmed cell death; sounds bad; is good) and autophagy (self-consumption; again, sounds bad; is good).
For example, he cites the intermittent fasters’ 46% lower risk of dying in the subsequent years of follow-up in this longitudinal study:
For brevity we’ll link to our previous IF article, but we’ll revisit caloric restriction in a main feature on of these days:
Fasting Without Crashing? We sort the science from the hype!
Dr. Greger favours caloric restriction over intermittent fasting, arguing that it is easier to adhere to and harder to get wrong if one has some confounding factor (e.g. diabetes, or a medication that requires food at certain times, etc). If adhered to healthily, the benefits appear to be comparable for each, though.
Protein restriction
In contrast to our recent main feature Protein vs Sarcopenia, in which that week’s featured expert argued for high protein consumption levels, protein restriction can, on the other hand, have anti-aging effects. A reminder that our body is a complex organism, and sometimes what’s good for one thing is bad for another!
Dr. Greger offers protein restriction as a way to get many of the benefits of caloric restriction, without caloric restriction. He further notes that caloric restriction without protein restriction doesn’t decrease IGF-1 levels (a marker of aging).
However, for FGF21 levels (these are good and we want them higher to stay younger), what matters more than lowering proteins in general is lowering levels of the amino acid methionine—found mostly in animal products, not plants—so the source of the protein matters:
For example, legumes deliver only 5–10% of the methionine that meat does, for the same amount of protein, so that’s a factor to bear in mind.
NAD+
This is about nicotinamide adenine dinucleotide, or NAD+ to its friends.
NAD+ levels decline with age, and that decline is a causal factor in aging, and boosting the levels can slow aging:
Therapeutic Potential of NAD-Boosting Molecules: The In Vivo Evidence
Can we get NAD+ from food? We can, but not in useful quantities or with sufficient bioavailability.
Supplements, then? Dr. Greger finds the evidence for their usefulness lacking, in interventional trials.
How to boost NAD+, then? Dr. Greger prescribes…
Exercise! It boosts levels by 127% (i.e., it more than doubles the levels), based on a modest three-week exercise bike regimen:
Skeletal muscle NAMPT is induced by exercise in humans
Another study on resistance training found the same 127% boost:
Take care!
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Maca Root’s Benefits For The Mood And The Ability
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Maca Root: What It Does And Doesn’t Do
Maca root, or Lepidium meyenii, gets thought of as a root vegetable, though it’s in fact a cruciferous vegetable and more closely related to cabbage—notwithstanding that it also gets called “Peruvian ginseng”.
- Nutritionally, it’s full of all manner of nutrients (vitamins, minerals, fiber, and a wide array of phytochemicals)
- Medicinally, it’s long enjoyed traditional use against a wide variety of illnesses, including respiratory infections and inflammatory diseases.
It’s also traditionally an aphrodisiac.
Is it really anti-inflammatory?
Probably not… Unless fermented. This hasn’t been studied deeply, but a 2023 study found that non-fermented and fermented maca root extracts had opposite effects in this regard:
However, this was an in vitro study, so we can’t say for sure that the results will carry over to humans.
Is it really an aphrodisiac?
Actually yes, it seems so. Here’s a study in which 45 women with antidepressant-induced sexual dysfunction found it significantly improved both libido and sexual function:
❝In summary, maca root may alleviate antidepressant-induced sexual dysfunction as women age, particularly in the domain of orgasm❞
~ Dr. Christina Dording et al.
Read in full: A Double-Blind Placebo-Controlled Trial of Maca Root as Treatment for Antidepressant-Induced Sexual Dysfunction in Women
As for men, well these mice (not technically men) found it beneficial too:
Effects of combined extracts of Lepidium meyenii and Allium tuberosum Rottl. on [e-word] dysfunction
(pardon the censorship; we’re trying to avoid people’s spam filters)
It did also improve fertility (and, actually in real men this time):
Does Lepidium meyenii (Maca) improve seminal quality?
Oh, to be in the mood
Here’s an interesting study in which 3g/day yielded significant mood improvement in these 175 (human) subjects:
And yes, it was found to be “well-tolerated” which is scientist-speak for “this appears to be completely safe, but we don’t want to commit ourselves to an absolutist statement and we can’t prove a negative”.
Oh, to have the energy
As it turns out, maca root does also offer benefits in this regard too:
(that’s not an added ingredient; it’s just a relevant chemical that the root naturally contains)
Want to try some?
We don’t sell it, but here for your convenience is an example product on Amazon 😎
Enjoy!
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Can You Shrink A Waist In Seven Days?
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We don’t usually do this sort of video, but it seems timely before the new year. The exercises shown here are very good, and the small dietary tweak is what makes it work:
The method
Firstly, the small dietary tweak is: abstaining from foods that cause bloating, such as flour and dairy. She does say “брожение” (fermentation), but we don’t really use the word that way in English. On which note: she is Ukrainian and speaking Russian (context: many Ukrainians grew up speaking both languages), so you will need the subtitles on if you don’t understand Russian, but a) it’s worth it b) the subtitles have been put in manually so they’re a respectable translation.
Secondly, spoiler, she loses about 2 inches.
The exercises are:
- Pelvic swing-thrusts: sit, supporting yourself on your hands with your butt off the floor; raise your pelvis up to a table position, do 30 repetitions.
- Leg raises in high plank: perform 20 lifts per leg, each to its side.
- Leg raises (lying on back): do 20 repetitions.
- V-crunches: perform 30 repetitions.
- V-twists: lean on hands and do 25 repetitions.
These exercises (all five done daily for the 7 days) are great for core strength, and core muscletone is what keeps your innards in place, rather than letting them drop down (and out).
Thus, there’s only a small amount of actual fat loss going on here (if any), but it slims the waistline by improving muscletone and simultaneously decreasing bloating, which are both good changes.
For more on all of these plus visual demonstrations, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Visceral Belly Fat & How To Lose It
Take care!
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How To Reduce Your Alzheimer’s Risk
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Reduce Your Alzheimer’s Risk
Alzheimer’s is just one cause of dementia, but it’s a very notable one, not least of all because it’s
- a) the most common cause of dementia, and
- b) a measurably terminal disease.
For that reason we’re focusing on Alzheimer’s today, although most of the advice will go for avoiding dementia in general.
First, some things not everyone knows about Alzheimer’s:
- Alzheimer’s is a terminal disease.
- People who get a diagnosis at age 60 are typically given 4–8 years to live.
- Some soldier on for as many as 20, but those are rare outliers.
- Alzheimer’s begins 20 years or more before other symptoms start to develop.
- This makes this information very relevant for younger people approaching 40, for example.
- Alzheimer’s accounts for 60–80% of dementia, and affects around 6% of people over 60.
- By the age of 65, that figure is 10%. By the age of 70, however, the percentage is still about the same—this is because of the mortality rate preventing the accumulation of Alzheimer’s patients over time.
Want to know more? Read: 2023 Alzheimer’s Disease Facts And Figures Special Report ← this is a very comprehensive downloadablereference, by the way, including a lot of information about diagnosis, treatmentpathways, and earlyinterventions.
Speaking of diagnosis…
Know what the symptoms are… and aren’t!
Forgetting your car keys can be frustrating. Forgetting them frequently can be worrying.
But: there’s a difference between forgetting your car keys, and forgetting what car keys are used for. The latter is the kind of memory loss that’s more of a red flag for Alzheimer’s.
Similarly: forgetting someone’s name can be embarrassing. Forgetting someone’s name, asking them, forgetting asking them, asking them again, forgetting again (lather rinse repeat) is more of a red flag for Alzheimer’s.
There are other symptoms too, some of them less commonly known:
❝Difficulty remembering recent conversations, names or events; apathy; and depression are often early symptoms. Communication problems, confusion, poor judgment and behavioral changes may occur next. Difficulty walking, speaking, and swallowing are common in the late stages of the disease❞
If you or a loved one are experiencing worrying symptoms: when it comes to diagnosis and intervention, sooner is a lot better than later, so do talk to your doctor.
As for reducing your risk? First, the obvious stuff:
The usual 5 things that go for almost everything:
- Have a good diet—the Mediterranean Diet is once again recommended (we expect this will not be a surprise to regular readers!)
- Get regular exercise—in the case of avoiding Alzheimer’s and other dementias, typically the most important thing here is heart health, so getting regular cardiovascular exercise, such walking, running, or dancing is great. Cycling too. Swimming, not so much. Not that swimming’s bad or anything, it’s just that when your body is horizontal, the heart has less work to do, especially in the upper part of the body, because it’s not defying gravity. Similarly, yoga is great for the health but won’t particularly help with this, nor will weight training.
- Get good sleep—as we get older, we tend to need less sleep, and tend more towards the lower end of the standard “7–9 hours” prescription, but getting at least those 7 hours makes a huge difference.
- Cut down (or eliminate) alcohol consumption—and especially avoid binge-drinking. While “binge-drinking” is typically associated with young people, that Christmas party where that one uncle gets very drunk is also binge-drinking, for example. Plus, heavy drinking in early life has also been correlated with higher risk of Alzheimer’s later.
- Don’t smoke. It’s bad for everything, and Alzheimer’s risk is no exception.
How much do lifestyle changes alone make a difference?
They make a big difference. This 2022 population-based cohort study (so: huge sample size) looked at people who had 4–5 of the healthy lifestyle factors being studied, vs people who had 0–1 of them. They found:
❝A healthy lifestyle was associated with a longer life expectancy among men and women, and they lived a larger proportion of their remaining years without Alzheimer’s dementia.❞
The numbers of years involved by the way ranged between 3 and 20 years, in terms of life expectancy and years without or with Alzheimer’s, with the average increase of healthy life years being approximately the same as the average increase in years. This is important, because:
A lot of people think “well if I’m going to go senile, I might as well [unhealthy choice that shortens lifespan]”, but they misunderstand a critical factor:
The unhealthy choices will reduce their healthy life years, and simply bring the unhealthy ones (and subsequent death) sooner. If you’re going to spend your last few years in ill-health, it’s better to do so at 90 than 50.
The other thing you may already know… And a thing about it that not everyone considers:
Keeping cognitively active is important. This much is broadly known by the general public, and to clinicians, this was the fourth “healthy factor” in the list of five (instead of the sleep that we put there, because we were listing the 5 things that go for most preventable health issues).
Everyone leaps to mention sudoku at this point, so if that’s your thing, great, enjoy it! (This writer personally enjoys chess, which isn’t everyone’s cup of tea; if it yours though, you can come join her on Chess.com and we’ll keep sharp together)
But the more parts of your mental faculties you keep active, the better. Remember, brainpower (as with many things in health and life) is a matter of “use it or lose it” and this is on a “per skill” basis!
What this means: doing sudoku (a number-based puzzle game) or chess (great as it may be) won’t help as much for keeping your language skills intact, for example. Given that language skills are one of the most impactful and key faculties to get lost to Alzheimer’s disease, neglecting such would be quite an oversight!
Some good ways to keep your language skills tip-top:
- Read—but read something challenging, if possible. It doesn’t have to be Thomas Scanlon’s What We Owe To Each Other, but it should be more challenging than a tabloid, for example. In fact, on the topic of examples:
- This newsletter is written to be easy to read, while not shying away from complex ideas or hard science. Our mission is literally to “make [well-sourced, science-based] health and productivity crazy simple”.
- But the academic papers that we link? Those aren’t written to be easy to read. Go read them, or at least the abstracts (in academia, an abstract is essentially an up-front summary, and is usually the first thing you’ll see when you click a link to a study or such). Challenge yourself!
- Write—compared to reading/listening, producing language is a (related, but) somewhat separate skill. Just ask any foreign language learner which is more challenging: reading or writing!
- Journaling is great, but writing for others is better (as then you’ll be forced to think more about it)
- Learn a foreign language—in this case, what matters it that you’re practicing and learning, so in the scale of easy to hard, or doesn’t matter if it’s Esperanto or Arabic. Duolingo is a great free resource that we recommend for this, and they have a wide range of extensive courses these days.
Now for the least obvious things…
Social contact is important.
Especially in older age, it’s easy to find oneself with fewer remaining friends and family, and getting out and about can be harder for everyone. Whatever our personal inclinations (some people being more introverted or less social than others), we are fundamentally a social species, and hundreds of thousands of years of evolution have built us around the idea that we will live our lives alongside others of our kind. And when we don’t, we don’t do as well.
See for example: Associations of Social Isolation and Loneliness With Later Dementia
If you can’t get out and about easily:
- Online socialising is still socializing.
- Online community is still community.
- Online conversations between friends are still conversations between friends.
If you don’t have much (or anyone) in the category of friends and family, join Facebook groups related to your interests, for example.
Berries are surprisingly good
^This may read like a headline from 200,000 BCE, but it’s relevant here!
Particularly recommended are:
- blueberries
- blackberries
- raspberries
- strawberries
- cranberries
We know that many of these berries seem to have a shelf-life of something like 30 minutes from time of purchase, but… Frozen and dried are perfectly good nutritionally, and in many cases, even better nutritionally than fresh.
Read: Effect of berry-based supplements and foods on cognitive function: a systematic review
Turmeric’s health benefits appear to include protecting against Alzheimer’s
Again, this is about risk reduction, and turmeric (also called curcumin, which is not the same as cumin) significantly reduces the build-up of amyloid plaques in the brain. Amyloid plaques are part of the progression of Alzheimer’s.
See for yourself: Protective Effects of Indian Spice Curcumin Against Amyloid Beta in Alzheimer’s Disease
If you don’t like it as a spice (and even if you do, you probably don’t want to put it in your food every day), you can easily get it as a supplement in capsule form.
Lower your homocysteine levels
Lower our what now? Homocysteine is an amino acid used for making certain proteins, and it’s a risk factor for Alzheimer’s.
Foods high in folate (and possible other B-vitamins) seem to lower homocysteine levels. Top choices include:
- Leafy greens
- Cruciferous vegetables
- Tomatoes
Get plenty of lutein
We did a main feature about specifically this a little while ago, so we’ll not repeat our work here, but lutein is found in, well, the same things we just listed above, and lower levels of lutein are associated with Alzheimer’s disease. It’s not a proven causative factor—we don’t know entirely what causes Alzheimer’s, just a lot of factors that have a high enough correlation that it’d be remiss to ignore them.
Catch up on our previous article: Brain Food? The Eyes Have It
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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:
- Enhanced plaque removal to improve gingival health: 3-month randomized clinical study of the effects of baking soda toothpaste on plaque and gingivitis
- The effects of two baking-soda toothpastes in enhancing mechanical plaque removal and improving gingival health: A 6-month randomized clinical study
- The efficacy of baking soda dentifrice in controlling plaque and gingivitis: A systematic review
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:
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:
- Does the use of alcohol mouthwash increase the risk of developing oral cancer?
- Alcohol-based mouthwash as a risk factor of oral cancer: A systematic review
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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Vaginal Probiotics: What Does The Science Say?
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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 😎
❝Is there any merit to vaginal probiotics?❞
What a fun question! First let’s break it down, as this could mean two different things:
- Probiotics, which you consume, using your mouth, which are marketed as benefiting vaginal health
- Probiotics taken as a vaginal pessary/suppository, to act directly there
The former has limited evidence for it, but generally speaking, improving one’s gut health improves all other areas of health, so it’s not surprising if it helps this too.
See for example:
Some notes:
- candidal vaginitis means a yeast infection causing vaginal inflammation
- bacterial vaginosis means a vaginal bacterial imbalance (generally also featuring vaginal inflammation, though it can be asymptomatic)
In the latter case, the “imbalance” in question is usually a shortage of Lactobacillus sp. (that is to say, the diverse species of the Lactobacillus genus) resulting in an overgrowth of other kinds of bacteria, which in turn results in changing the vaginal microbiome to make it warmer and more acidic than it should be.
While a healthy vagina shouldn’t smell of roses, it shouldn’t smell fishy either; if it does, that’s a sign of bacterial vaginosis.
What it’s supposed to be like: slightly bitter, slightly salty, distinctly umami, along with a cocktail of personal pheromones (and if menstruating or otherwise* vaginally bleeding, then of course add: iron/”metallic”). The pheromones will also reflect any hormonal changes, but should never make anything smell bad, just different.
*e.g. due to PCOS, fibroids, etc. Note that in the case of PCOS, it may also smell a little different (if it does, then usually: a little more musky), due to often different hormone levels. Again: it still shouldn’t smell bad, though, just different.
In the above-linked study, taking more live Lactobacillus acidophilus (in yogurt, eating it, with their mouths) improved levels of L. acidophilus in the vagina. While the study authors concluded “this ingestion of yogurt may have reduced episodes of bacterial vaginosis”, which is rather a weak claim, it can be argued that it merely improving the levels of L. acidophilus in the vagina was already a win.
That was a small (n=42, and only 7 followed through to completion) and old (1996) study, and it bears mentioning that most of the studies into this seem to be small and old, but conclude similarly with weakly positive statements.
However, it does make a difference what kind of Lactobacillus is used, for example in this next study…
- L. fermentum RC-14 worked well (90% success rate)
- L. rhamnosus GR-1 worked somewhat (40% success rate)
- L. rhamnosus GG did not work (0% success rate)
So, diversity is key, and getting a wide range of Lactobacillus sp. seems to be a safe bet.
Short version: enjoying probiotics as part of your diet probably improves vaginal health, just like it improves pretty much everything else.
See also: Make Friends With Your Gut (You Can Thank Us Later)
You would think that this would mean that taking probiotics as a vaginal pessary/suppository would be even better, but the results are weaker, as in this study, which produced temporary improvements in about half the study group, with only 3 out of 28 being free of bacterial vaginosis the next month:
Treatment of bacterial vaginosis with lactobacilli
This study got better results, with a 61% success rate:
Important note
Do note that this last category, involving topical treatments (i.e., manually introducing Lactobacillus sp. to the vagina) were all in cases of pre-existing bacterial vaginosis, not as a prophylactic and/or general health-improving thing.
If your vagina seems happy right now, then do not mess with its happy bacterial balance!
And at all times (regardless of whether it seems happy right now or not): do not douche (it does not need it and will not benefit from it; the vagina is self-cleaning*) as this will wash out many of your Lactobacilli and will do absolutely nothing against any Candida there (C. albicans being a rooted fungus, whereas Lactobacillus is a sausage-shaped bacterium with many tiny appendages but no actual ability to stay put), so Candida will flourish in the Lactobacillus’s absence.
*by the vagina, we are referring to the vaginal canal. The vulva—the outside part consisting of the two pairs of labia, the glans clitoris, and clitoral hood—are not self-cleaning, and should just be washed gently per your normal bath/shower routine; that’s perfectly fine and good.
And definitely don’t put any “cleansing” toiletries inside the vagina (or any toiletries at all, for that matter), even if they are sold and marketed for that purpose; they will not help and they will harm.
Also, due to their neighborliness, messing up the microbiome inside the vagina is a common way to also get Candida inside the urethra:
How To Avoid Urinary Tract Infections (UTIs)
One other option
Finally, unless you have a “very good friend” you have a pressing urge to swap germs with, you might want to leave this one to the scientists, but we share this paper just for interest:
Lastly…
Going back to oral supplementation, if you’d like to try that then check out this for further notes on what, why, how, etc:
How Much Difference Do Probiotic Supplements Make To Health?
Take care!
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