Gentler Hair Health Options
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Hair, Gently
We have previously talked about the medicinal options for combatting the thinning hair that comes with age especially for men, but also for a lot of women. You can read about those medicinal options here:
Hair-Loss Remedies, By Science
We also did a whole supplement spotlight research review for saw palmetto! You can read about how that might help you keep your hair present and correct, here:
One Man’s Saw Palmetto Is Another Woman’s Serenoa Repens
Today we’re going to talk options that are less “heavy guns”, and/but still very useful.
Supplementation
First, the obvious. Taking vitamins and minerals, especially biotin, can help a lot. This writer takes 10,000µg (that’s micrograms, not milligrams!) biotin gummies, similar to this example product on Amazon (except mine also has other vitamins and minerals in, but the exact product doesn’t seem to be available on Amazon).
When thinking “what vitamins and minerals help hair?”, honestly, it’s most of them. So, focus on the ones that count for the most (usually: biotin and zinc), and then cover your bases for the rest with good diet and additional supplementation if you wish.
Caffeine (topical)
It may feel silly, giving one’s hair a stimulant, but topical caffeine application really does work to stimulate hair growth. And not “just a little help”, either:
❝Specifically, 0.2% topical caffeine-based solutions are typically safe with very minimal adverse effects for long-term treatment of AGA, and they are not inferior to topical 5% minoxidil therapy❞
(AGA = Androgenic Alopecia)
Argan oil
As with coconut oil, argan oil is great on hair. It won’t do a thing to improve hair growth or decrease hair shedding, but it will help you hair stay moisturized and thus reduce breakage—thus, may not be relevant for everyone, but for those of us with hair long enough to brush, it’s important.
Bonus: get an argan oil based hair serum that also contains keratin (the protein used to make hair), as this helps strengthen the hair too.
Here’s an example product on Amazon
Silk pillowcases
Or a silk hair bonnet to sleep in! They both do the same thing, which is prevent damaging the hair in one’s sleep by reducing the friction that it may have when moving/turning against the pillow in one’s sleep.
- Pros of the bonnet: if you have lots of hair and a partner in bed with you, your hair need not be in their face, and you also won’t get it caught under you or them.
- Pros of the pillowcase: you don’t have to wear a bonnet
Both are also used widely by people without hair loss issues, but with easily damaged and/or tangled hair—Black people especially with 3C or tighter curls in particular often benefit from this. Other people whose hair is curly and/or gray also stand to gain a lot.
Here are Amazon example products of a silk pillowcase (it’s expensive, but worth it) and a silk bonnet, respectively
Want to read more?
You might like this article:
From straight to curly, thick to thin: here’s how hormones and chemotherapy can change your hair
Take care!
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Chromium Picolinate For Blood Sugar Control & Weight Loss
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First, a quick disambiguation:
- chromium found in food, trivalent chromium of various kinds, is safe (in the quantities usually consumed) and is sometimes considered an essential mineral, sometimes considered unnecessary but beneficial. It’s hard to know for sure, since it’s in a lot of foods (naturally, like many trace elements)
- chromium found in pollution, hexavalent chromium (so: twice as many cationic bonds, if this writer’s chemistry serves her correctly) is poisonous.
We’re going to be writing about the food kind, which is also possible to take as a supplement.
In this case, supplementing vs getting from food is quite a big difference, by the way, since (unlike for a lot of things, which are often the other way around) the bioavailability of chromium from food is very low (around 2.5%), whereas chromium picolinate, one of the most commonly-used supplement forms, boasts higher bioavailability.
Does it work for blood sugars?
Yes, it does! At least, it does in the case of people with type 2 diabetes. Rather than bombard you with many individual studies, here’s a systematic review and meta-analysis of 22 criteria-meeting randomized clinical trials that found:
❝The available evidence suggests favourable effects of chromium supplementation on glycaemic control in patients with diabetes.
Chromium monosupplement may additionally improve triglycerides and HDL-C levels.❞
Type 1 diabetes does not have anything like the same weight of evidence, and indeed,
we couldn’t find a single human study. It was beneficial for mice with artificially-induced T1D, thoughwait no, we have an update! We found literally a single human study:Chromium picolinate supplementation for diabetes mellitus
Literally, as in: it’s a case study of one person, and the results were a modest reduction in Hb A1c levels after 3 months of 600μg daily; the researchers concluded that ❝chromium picolinate continues to fall squarely within the scope of “alternative medicine,” with both unproven benefits and unknown risks❞.
As for people without diabetes, it may reduce the risk of diabetes:
Risk of Type 2 Diabetes Is Lower in US Adults Taking Chromium-Containing Supplements
However! This was an observational study, and correlation ≠ causation.
Furthermore, they said:
❝Over one-half the adult US population consumes nutritional supplements, and over one-quarter consumes supplemental chromium. The odds of having T2D were lower in those who, in the previous 30 d, had consumed supplements containing chromium❞
That “over one-quarter consumes supplemental chromium” brought our attention to the fact that this is not talking about specifically chromium “monosupplements” (definitely not quarter of the adult population take those), but rather, “multivitamin and mineral” supplements that also contain a tiny amount (often under 50μg) of chromium.
In other words, this ruins the data and honestly the benefit could have been from anything in the “multivitamin and mineral” supplement, or indeed, could just be “the kind of person who takes supplements is the kind of person who lives a lifestyle that is less conducive to becoming diabetic”.
Does it work for weight loss?
We’re running out of space here, so we’ll be brief:
No.
There are many papers that have concluded this, but here are two:
Chromium picolinate supplementation for overweight or obese adults
and
Is it safe?
Science’s current best answer is “we don’t know; it hasn’t been tested enough; we haven’t even established the tolerable upper limit, which is usually step 1 of establishing safety”.
Nor is there an estimated average requirement (if indeed there even is a requirement, which question is also not as yet answered conclusively by science), and science falls back to “here’s an average of what people consume in their diet, so that’s probably safe, we guess”.
(that average was reckoned as 25μg/day for young women and 25μg/day for young men, by the way; older ages not as yet reckoned)
You can read about this sorry state of affairs here.
Want to try some?
Notwithstanding the above lack of data for safety, it does have benefits for blood sugars, so if that’s a gamble you’re willing to make, then here’s an example product on Amazon.
Note: the dosage per capsule there (800μg) is half of the low end of the dose that was implicated in the serious kidney condition caused in this case study (1200–2400μg), so if you are going to try it, we strongly recommend not taking more than one per day.
Take care!
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Tea tree oil may affect fertility, the EU says. A pharmacologist explains why that’s so misleading
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The heady scent of tea tree is one of the iconic smells of the Australian bush. And the essential oils derived from tea trees have been used as medicines, first by Indigenous people, then by colonists.
Today, many of us have a bottle of tea tree oil at home, or use shampoo or creams containing it. Tea tree oil is also a major export earner for Australia.
Now media reports suggest the European Union (EU) is concerned tea tree oil may affect people’s fertility and may ban imports.
Let’s see whether we really need to worry about any impact of tea tree oil on our reproductive system.
Stephanie (strph)/Wikimedia, CC BY-SA The many uses of tea tree oil
Leaves of Melaleuca alternifolia trees and other species of Melaleuca produce an essential oil that’s used medicinally and in a variety of toiletries and cosmetics. This oil is a complex mixture of nearly 100 aromatic compounds.
Tea tree oil has been used as an antiseptic since it became commercially available in the 1930s. It has antibacterial, antifungal, anti-parasite and antioxidant properties.
Laboratory experiments suggest it may also help reduce inflammation and enhance healing.
It’s used to treat acne, seborrhoeic dermatitis, and as a mouthwash to treat gingivitis (gum disease). However, the clinical evidence for these uses is not strong.
Tea tree oil is also used in cosmetics and toiletries, such as shower gel and face wash, in various concentrations.
Is tea tree oil safe?
The most common adverse effects of tea tree oil are when it’s used on the skin. In some people, the skin can become sensitive and allergic contact dermatitis can develop. This is particularly when used neat (using the pure oil) rather than after using cosmetics and toiletries, which contain lower concentrations.
Acute toxicity, when there are rapid side-effects coming on within minutes, to tea tree oil via skin application is rare.
Drinking tea tree oil, even diluted or in small concentrations, is not recommended as this can be deadly. There have been reports of cases of depression of the central nervous system (where brain activity slows down) and possible injury to the lungs.
How about the reproductive system?
The EU has been concerned about the potential impact of tea tree oil on the reproductive system for several years.
In November 2023, the European Chemicals Agency’s Committee for Risk Assessment proposed tea tree oil be classified as a presumed human reproductive toxicant, under category IB.
This classification would mean a ban on tea tree oil in pesticides, and cosmetics and toiletries used in the EU.
The decision rested on the results of reproductive toxicity experiments. This involved administering tea tree oil to rats orally at various concentration for ten days, before mating. Female rats also received tea tree oil while pregnant and up to the weaning of the offspring.
In the females, measures of fertility, including the number of embryos implanted and mean litter size, were no different to those that had not been given tea tree oil.
At the highest doses, the sperm counts of male rats were lower. But this wasn’t the case for rats given tea tree at 25 milligrams of tea tree oil per kilogram of body-weight per day. That’s around 0.028 millilitres of tea tree oil per kilogram a day.
This doesn’t sound much, but for a 60kg human, that would be equivalent to drinking about one-and-a-half millilitres of pure tea tree oil a day. Nobody is going to be drinking that amount day in, day out. Virtually every application says not to ingest any tea tree oil because of its known human oral toxicity.
This is the level that has no effect on reproduction. The level for reproductive toxicity is twice that.
In cosmetics and toiletries, no-one would be exposed to that much tea tree oil. Less than 4% of tea tree oil components are absorbed via the skin. So even if you did smear that much tea tree oil on yourself, the concentration your body would be exposed to is less than a tenth of the amount that has no effect.
Rats also metabolise tea tree oil components differently to humans. They produce a toxic byproduct that affects sperm. By comparison, humans only produce trace levels of this byproduct.
So what happened recently?
In November 2025, another European committee, the Scientific Committee on Consumer Safety gave its update.
It considered the issues of dose and metabolism outlined above. It also considered human pharmacovigilance data (where therapies are monitored over time to track any potential safety issues). The pharmacovigilance data showed no sign of reproductive toxicity associated with human use of existing products.
It considered tea tree oil’s use in cosmetics and toiletries to be safe up to the maximum concentration of:
- 2.0% in shampoo
- 1.0% in shower gel
- 1.0% in face wash
- 0.1% in face cream.
The United Kingdom has also weighed in. In August 2025, its Health and Safety Executive didn’t classify tea tree oil as a reproductive toxicant.
What this means for the EU’s classification of tea tree oil in the future is unclear. Shifting it to another category – toxicity category 2, a suspected human reproductive toxicant – would be an option.
In a nutshell
Europe’s initial evaluation of tea tree oil as a presumed human reproductive toxicant in 2023 understandably sounds alarming. But the 2025 update has toned down warnings.
The subsequent re-evaluation of evidence – of tea tree oil’s concentrations and applications, species-specific toxicity, and real-world data tracking safety in humans – means we can be much more confident of its safety.
Tea tree oil, when used as directed, is much safer than the headlines suggest.
Ian Musgrave, Senior Lecturer in Pharmacology, Adelaide University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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How To Grow In Comfort
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How To Grow (Without Leaving Your Comfort Zone)
“You have to get out of your comfort zone!” we are told, from cradle to grave.
When we are young, we are advised (or sometimes more forcefully instructed!) that we have to try new things. In our middle age, we are expected to be the world’s greatest go-getters, afraid of nothing and always pushing limits. And when we are old, people bid us “don’t be such a dinosaur”.
It is assumed, unquestioned, that growth can only occur through hardship and discomfort.
But what if that’s a discomforting lie?
Butler (2023) posited an idea: “We never achieve success faster and with less effort than when we are in our comfort zone”
Her words are an obvious callback to the ideas of Csikszentmihalyi (1970) in the sense of “flow”, in the sense in which that word is used in psychology.
Flow is: when a person is in a state of energized focus, full involvement, and enjoyment of an activity.
As a necessary truth (i.e: a function of syllogistic logic), the conditions of “in a state of flow” and “outside of one’s comfort zone” cannot overlap.
From there, we can further deduce (again by simple logic) that if flow can be found, and/but cannot be found outside of the comfort zone, then flow can only be found within the comfort zone.
That is indeed comforting, but what about growth?
Imagine you’ve never gone camping in your life, but you want to get outside of your comfort zone, and now’s the time to do it. So, you check out some maps of the Yukon, purchase some camping gear, and off you go into the wilderness. In the event that you survive to report it, you will indeed be able to say “it was not comfortable”.
But, did growth occur? Maybe, but… it’s a folly to say “what doesn’t kill us makes us stronger” as a reason to pursue such things. Firstly, there’s a high chance it may kill us. Secondly, what doesn’t kill us often leaves us incredibly weakened and vulnerable.
When Hannibal famously took his large army of mostly African mercenaries across the Alps during winter to march on Rome from the other side, he lost most of his men on the way, before proceeding to terrorize Northern Italy convincingly with the small remainder. But! Their hard experience hadn’t made them stronger; it had just removed the weaker soldiers, making the resultant formations harder to break.
All this to say, please do not inflict hardship and discomfort and danger in the hopes it’ll make you stronger; it will probably do the opposite.
But…
If, instead of wilderness trekking in the Yukon…
- You start off with a camper van holiday, then you’ll be taking a fair amount of your comfort with you. In effect, you will be stretching and expanding your comfort zone without leaving it.
- Then maybe another year you might try camping in a tent on a well-catered camping site.
- Later, you might try “roughing it” at a much less well-catered camping site.
- And so on.
Congratulations, you have tried new things and undergone growth, taking your comfort zone with you all the way!
This is more than just “easing yourself into” something
It really is about taking your comfort with you too. If you want to take up running, don’t ask “how can I run just a little bit first” or “how can I make it easier” (well, feel free to ask those things too, but) ask yourself: how can I bring my comfort with me? Comfortable shoes, perhaps, an ergonomic water bottle, shade for your head, maybe.
❝Any fool can rough it, but a good soldier can make himself comfortable in any circumstances❞
~ British Army maxim
This goes for more than just physical stuff, too
If you want to learn a new skill, the initial learning curve can be anxiety-inducing, especially if you are taking a course and worried about keeping up or “not being good enough”.
So, “secretly” study in advance, at your leisure, get yourself a head start. Find a degree of comfort in what you’ve learned so far, and then bring that comfort with you into your entry-level course that is now less intimidating.
Discomfort isn’t a badge of honor (and impedes growth)
Take that extra rest stop on the highway. Bring your favorite coffee with you. Use that walking stick, if it helps.
Whatever it takes to bring your comfort with you, bring it.
Trust us, you’ll get further that way.
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Mimosa For Healing Your Body & Mind
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Today we’re looking at mimosa (no relation to the cocktail!), which is a name given to several related plant species that belong to the same genus or general clade, look similar, and have similar properties and behavior.
As a point of interest that’s not useful: mimosa is one of those plants whereby if you touch it, it’ll retract its leaves and shrink away from you. The leaves also droop at nighttime (perfectly healthily; they’re not wilting or anything; this too is just plant movement), and spring back up in the daytime.
So that’s what we mean when we say “and behavior” 😉
Antidepressant & anxiolytic
Mimosa bark and leaves have long been used in Traditional Chinese Medicine, as well as (albeit different species) in the North-East of Brazil, and (again, sometimes different species) in Mexico.
Animal studies, in vivo studies, and clinical practice in humans, have found this to be effective, for example:
❝[Mimosa pudica extract] has anti-anxiety, anti-depressant and memory enhancing activities that are mediated through multiple mechanisms❞
Source: Effects of Mimosa pudica L. leaves extract on anxiety, depression and memory
Research is ongoing with regard to how, exactly, mimosa does what it does. Here’s a paper about another species mimosa:
(notwithstanding the genus name, it’s still part of the mimosa clade)
Anti-inflammatory & analgesic
In this case, mimosa has traditionally been used as a topical tincture (for skin damage of many kinds, ranging from cuts and abrasions to burns to autoimmune conditions and more), so what does the science say about that?
❝In summary, the present study provided evidence that the [mimosa extract], its fractions and the isolated compound sakuranetin showed significant anti-inflammatory and antinociceptive activities❞
Wound healing
About those various skin damages, here’s another application, and a study showing that it doesn’t just make it feel better, it actually helps it to heal, too:
❝Therapeutic effectiveness occurred in all patients of the extract group; after the 8th treatment week, ulcer size was reduced by 92% as mean value in this group, whereas therapeutic effectiveness was observed only in one patient of the control group (chi(2), p=0.0001). No side effects were observed in any patient in either group.❞
Very compelling stats!
Read more: Therapeutic effectiveness of a Mimosa tenuiflora cortex extract in venous leg ulceration treatment
Is it safe?
Yes, for most people, with some caveats:
- this one comes with a clear “don’t take if pregnant or breastfeeding” warning, as for unknown reasons it has caused a high incidence of fetal abnormalities or fetal death in animal studies.
- while the stem bark (the kind used in most mimosa supplements and most readily found online) has negligible psychoactivity, as do many species of mimosa in general, the root of M. tenuiflora has psychedelic effects similar to ayahuasca if taken orally, for example as a decoction, if in the presence of a monoamine oxidase inhibitor (MAOI), as otherwise MAO would metabolize the psychoactive component in the gut before it can enter the bloodstream.
That’s several “ifs”, meaning that the chances of unwanted psychedelic effects are slim if you’re paying attention, but as ever, do check with your doctor/pharmacist to be sure.
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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Behind Book Recommendations
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It’s Q&A Day!
Each Thursday, we respond to subscriber questions and requests! If it’s something small, we’ll answer it directly; if it’s something bigger, we’ll do a main feature in a follow-up day instead!
So, no question/request to big or small; they’ll just get sorted accordingly
Remember, you can always hit reply to any of our emails, or use the handy feedback widget at the bottom. We always look forward to hearing from you!
Q: What’s the process behind the books you recommend? You seem to have a limitless stream of recommendations
We do our best!
The books we recommend are books that…
- are on Amazon—it makes things tidy, consistent, and accessible. And if you end up buying one of the books, we get a small affiliate commission*.
- we have read—we would say “obviously”, but you might be surprised how many people write about books without having read them.
- pertain in at least large part to health and/or productivity.
- are written by humans—bookish people (and especially Kindle Unlimited users) may have noticed lately that there are a lot of low quality AI-written books flooding the market, sometimes with paid 5-star reviews to bolster them. It’s frustrating, but we can tell the difference and screen those out.
- are of a certain level of quality. They don’t have to be “top 5 desert-island books”, because well, there’s one every day and the days keep coming. But they do have to genuinely deliver the value that we describe, and merit a sincere recommendation.
- are varied—we try to not give a run of “samey” books one after another. We will sometimes review a book that covers a topic another previously-reviewed book did, but it must have something about it that makes it different. It may be a different angle or a different writing style, but it needs something to set it apart.
*this is from Amazon and isn’t product-specific, so this is not affecting our choice of what books to review at all—just that they will be books that are available on Amazon.
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What Omega-3 Fatty Acids Really Do For Us
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What Omega-3 Fatty Acids Really Do For Us
Shockingly, we’ve not previously covered this in a main feature here at 10almonds… Mostly we tend to focus on less well-known supplements. However, in this case, the supplement may be well known, while some of its benefits, we suspect, may come as a surprise.
So…
What is it?
In this case, it’s more of a “what are they?”, because omega-3 fatty acids come in multiple forms, most notably:
- Alpha-linoleic acid (ALA)
- Eicosapentaenoic acid (EPA)
- Docosahexanoic acid (DHA)
ALA is most readily found in certain seeds and nuts (chia seeds and walnuts are top contenders), while EPA and DHA are most readily found in certain fish (hence “cod liver oil” being a commonly available supplement, though actually cod aren’t even the best source—salmon and mackerel are better; cod is just cheaper to overfish, making it the cheaper supplement to manufacture).
Which of the three is best, or do we need them all?
There are two ways of looking at this:
- ALA is sufficient alone, because it is a precursor to EPA and DHA, meaning that the body will take ALA and convert it into EPA and DHA as required
- EPA and DHA are superior because they’re already in the forms the body will use, which makes them more efficient
As with most things in health, diversity is good, so you really can’t go wrong by getting some from each source.
Unless you have an allergy to fish or nuts, in which case, definitely avoid those!
What do omega-3 fatty acids do for us, according to actual research?
Against inflammation
Most people know it’s good for joints, as this is perhaps what it’s most marketed for. Indeed, it’s good against inflammation of the joints (and elsewhere), and autoimmune diseases in general. So this means it is indeed good against common forms of arthritis, amongst others:
Read: Omega-3 fatty acids in inflammation and autoimmune disease
Against menstrual pain
Linked to the above-referenced anti-inflammatory effects, omega-3s were also found to be better than ibuprofen for the treatment of severe menstrual pain:
Don’t take our word for it: Comparison of the effect of fish oil and ibuprofen on treatment of severe pain in primary dysmenorrhea
Against cognitive decline
This one’s a heavy-hitter. It’s perhaps to be expected of something so good against inflammation (bearing in mind that, for example, a large part of Alzheimer’s is effectively a form of inflammation of the brain); as this one’s so important and such a clear benefit, here are three particularly illustrative studies:
- Inadequate supply of vitamins and DHA in the elderly: implications for brain aging and Alzheimer-type dementia
- Fish consumption and cognitive decline with age in a large community study
- Fish consumption, long-chain omega-3 fatty acids and risk of cognitive decline or Alzheimer disease
Against heart disease
The title says it all in this one:
But what about in patients who do have heart disease?
Mozaffarian and Wu did a huge meta-review of available evidence, and found that in fact, of all the studied heart-related effects, reducing mortality rate in cases of cardiovascular disease was the single most well-evidenced benefit:
How much should we take?
There’s quite a bit of science on this, and—which is unusual for something so well-studied—not a lot of consensus.
However, to summarize the position of the academy of nutrition and dietetics on dietary fatty acids for healthy adults, they recommend a minimum of 250–500 mg combined EPA and DHA each day for healthy adults. This can be obtained from about 8 ounces (230g) of fatty fish per week, for example.
If going for ALA, on the other hand, the recommendation becomes 1.1g/day for women or 1.6g/day for men.
Want to know how to get more from your diet?
Here’s a well-sourced article about different high-density dietary sources:
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