Can You Reverse Gray Hair? A Dermatologist Explains
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Betteridge’s Law of Headlines states “any headline that ends in a question mark can be answered by the word no“—it’s not really a universal truth, but it’s true surprisingly often, and, as board certified dermatologist “The Beauty MD” Dr. Sam Ellis explains, it’s true in this case.
But, all is not lost.
Physiological Factors
Hair color is initially determined by genes and gene expression, instructing the body to color it with melanin (brown and black) and/or pheomelanin (blonde and red). If and when the body produces less of those pigments, our hair will go gray.
Factors that affect if/when our hair will go gray include:
- Genetics: primary determinant, essentially a programmed change
- Age: related to the above, but critically, the probability of going gray in any given year increases with age
- Ethnicity: the level of melanin in our skin is an indicator of how long we are likely to maintain melanin in our hair. Black people with the darkest skintones will thus generally go gray last, whereas white people with the lightest skintones will generally go gray first, and so on for a spectrum between the two.
- Medical conditions: immune conditions such as vitiligo, thyroid disease, and pernicious anemia promote an earlier loss of pigmentation
- Stress: oxidative stress, mainly, so factors like smoking will cause earlier graying. But yes, also chronic emotional stress does lead to oxidative stress too. Interestingly, this seems to be more about norepinephrine than cortisol, though.
- Nutrient deficiencies: the body can make a lot of things, but it needs the raw ingredients. Not having the right amounts of important vitamins and minerals will result in a loss of pigmentation (amongst other more serious problems). Vitamins B6, B9, and B12 are talked about in the video, as are iron and zinc. Copper is also needed for some hair colors. Selenium is needed for good hair health in general (but not too much, as an excess of selenium paradoxically causes hair loss), and many related things will stop working properly without adequate magnesium. Hair health will also benefit a lot from plenty of vitamin B7.
So, managing the above factors (where possible; obviously some of the above aren’t things we can influence) will result in maintaining one’s hair pigment for longer. As for texture, by the way, the reason gray hair tends to have a rougher texture is not for the lack of pigment itself, but is due to decreased sebum production. Judicious use of exogenous hair oils (e.g. argan oil, coconut oil, or whatever your preference may be) is a fine way to keep your grays conditioned.
However, once your hair has gone gray, there is no definitive treatment with good evidence for reversing that, at present. Dye it if you want to, or don’t. Many people (including this writer, who has just a couple of streaks of gray herself) find gray hair gives a distinguished look, and such harmless signs of age are a privilege not everyone gets to reach, and thus may be reasonably considered a cause for celebration
For more on all of the above, enjoy:
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Stop Using The Wrong Hairbrush For Your Hair Type
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When you brush your hair, you’re either making it healthier or damaging it, depending on what you’re using and how. To avoid pulling your hair out, and to enjoy healthy hair of whatever kind you have and whatever length suits you, it pays to know a little about different brushes, and the different techniques involved.
Head-to-head
Brush shapes and sizes are designed to achieve different effects in hair, not just for decoration. For example:
- Rat tail combs are excellent for parting and sectioning hair with clean lines. The rat tail part is actually more important than the comb part.
- Regular combs are multipurpose but best for use with flat irons, ensuring straighter hair for a longer time.
- Wide-tooth combs should not be used for detangling as they can cause breakage; instead, use a proper detangling brush. Speaking of detangling…
- Detangling brushes are essential for daily use. Whichever you use, start brushing from the bottom to prevent tangles from stacking and worsening. As for kinds of detangling brush:
- The “Tangle Teaser” is a good beginner option, but it may not detangle well for thicker hair.
- Wet Brush (this is a brand name, and is not about any inherent wetness) is the recommended detangling brush for most people. It can be used on wet or dry hair.
- Mason Pearson brush is a luxury detangling brush (see it here on Amazon) that works slightly more quickly and efficiently, but is expensive and not necessary for most people.
- Teasing brushes are for adding volume by backcombing—but require skill to prevent visible tangles. Best avoided for most people.
- Ceramic round brushes are the best for blow-drying, because they hold tension and help hair dry smoother and shinier.
- Blow-dryer brushes are great for easy blow-drying but should not be used on dry hair, to avoid damage.
- Denman brushes are for people with natural curls, enhancing curls without straightening them like a Wet brush would.
For more on all of these brushes, plus visual demonstrations, enjoy:
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You might also like to read:
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Reflexology: What The Science Says
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How Does Reflexology Work, Really?
In Wednesday’s newsletter, we asked you for your opinion of reflexology, and got the above-depicted, below-described set of responses:
- About 63% said “It works by specific nerves connecting the feet and hands to various specific organs, triggering healing remotely”
- About 26% said “It works by realigning the body’s energies (e.g. qi, ki, prana, etc), removing blockages and improving health“
- About 11% said “It works by placebo, at best, and has no evidence for any efficacy beyond that”
So, what does the science say?
It works by realigning the body’s energies (e.g. qi, ki, prana, etc), removing blockages and improving health: True or False?
False, or since we can’t prove a negative: there is no reliable scientific evidence for this.
Further, there is no reliable scientific evidence for the existence of qi, ki, prana, soma, mana, or whatever we want to call it.
To save doubling up, we did discuss this in some more detail, exploring the notion of qi as bioelectrical energy, including a look at some unreliable clinical evidence for it (a study that used shoddy methodology, but it’s important to understand what they did wrong, to watch out for such), when we looked at [the legitimately very healthful practice of] qigong, a couple of weeks ago:
Qigong: A Breath Of Fresh Air?
As for reflexology specifically: in terms of blockages of qi causing disease (and thus being a putative therapeutic mechanism of action for attenuating disease), it’s an interesting hypothesis but in terms of scientific merit, it was pre-emptively supplanted by germ theory and other similarly observable-and-measurable phenomena.
We say “pre-emptively”, because despite orientalist marketing, unless we want to count some ancient pictures of people getting a foot massage and say it is reflexology, there is no record of reflexology being a thing before 1913 (and that was in the US, by a laryngologist working with a spiritualist to produce a book that they published in 1917).
It works by specific nerves connecting the feet and hands to various specific organs, triggering healing remotely: True or False?
False, or since we can’t prove a negative: there is no reliable scientific evidence for this.
A very large independent review of available scientific literature found the current medical consensus on reflexology is that:
- Reflexology is effective for: anxiety (but short lasting), edema, mild insomnia, quality of sleep, and relieving pain (short term: 2–3 hours)
- Reflexology is not effective for: inflammatory bowel disease, fertility treatment, neuropathy and polyneuropathy, acute low back pain, sub acute low back pain, chronic low back pain, radicular pain syndromes (including sciatica), post-operative low back pain, spinal stenosis, spinal fractures, sacroiliitis, spondylolisthesis, complex regional pain syndrome, trigger points / myofascial pain, chronic persistent pain, chronic low back pain, depression, work related injuries of the hip and pelvis
Source: Reflexology – a scientific literary review compilation
(the above is a fascinating read, by the way, and its 50 pages go into a lot more detail than we have room to here)
Now, those items that they found it effective for, looks suspiciously like a short list of things that placebo is often good for, and/or any relaxing activity.
Another review was not so generous:
❝The best evidence available to date does not demonstrate convincingly that reflexology is an effective treatment for any medical condition❞
~ Dr. Edzard Ernst (MD, PhD, FMedSci)
Source: Is reflexology an effective intervention? A systematic review of randomised controlled trials
In short, from the available scientific literature, we can surmise:
- Some researchers have found it to have some usefulness against chiefly psychosomatic conditions
- Other researchers have found the evidence for even that much to be uncompelling
It works by placebo, at best, and has no evidence for any efficacy beyond that: True or False?
Mostly True; of course reflexology runs into similar problems as acupuncture when it comes to testing against placebo:
How Does One Test Acupuncture Against Placebo Anyway?
…but not quite as bad, since it is easier to give a random foot massage while pretending it is a clinical treatment, than to fake putting needles into key locations.
However, as the paper we cited just above (in answer to the previous True/False question) shows, reflexology does not appear to meaningfully outperform placebo—which points to the possibility that it does work by placebo, and is just a placebo treatment on the high end of placebo (because the placebo effect is real, does work, isn’t “nothing”, and some placebos work better than others).
For more on the fascinating science and useful (applicable in daily life!) practicalities of how placebo does work, check out:
How To Leverage Placebo Effect For Yourself
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Alzheimer’s: The Bad News And The Good
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Dr. Devi’s Spectrum of Hope
This is Dr. Gayatri Devi. She’s a neurologist, board-certified in neurology, pain medicine, psychiatry, brain injury medicine, and behavioral neurology.
She’s also a Clinical Professor of Neurology, and Director of Long Island Alzheimer’s Disease Center, Fellow of the American Academy of Neurology, and we could continue all day with her qualifications, awards and achievements but then we’d run out of space. Suffice it to say, she knows her stuff.
Especially when it comes to the optimal treatment of stroke, cognitive loss, and pain.
In her own words:
❝Helping folks live their best lives—by diagnosing and managing complex neurologic disorders—that’s my job. Few things are more fulfilling! For nearly thirty years, my focus has been on brain health, concussions, Alzheimer’s and other dementias, menopause related memory loss, and pain.❞
Alzheimer’s is more common than you might think
According to Dr. Devi,
❝97% of patients with mild Alzheimer’s disease don’t even get diagnosed in their internist offices, and half of patients with moderate Alzheimer’s don’t get diagnosed.
What that means is that the percentage of people that we think about when we think about Alzheimer’s—the people in the nursing home—that’s a very, very small fraction of the entirety of the people who have the condition❞
As for what she would consider the real figures, she puts it nearer 1 in 10 adults aged 65 and older.
Source: Neurologist dispels myths about Alzheimer’s disease
Her most critical advice? Reallocate your worry.
A lot of people understandably worry about a genetic predisposition to Alzheimer’s, especially if an older relative died that way.
See also: Alzheimer’s, Genes, & You
However, Dr. Devi points out that under 5% of Alzheimer’s cases are from genetics, and the majority of Alzheimer’s cases can be prevented be lifestyle interventions.
See also: Reduce Your Alzheimer’s Risk
Lastly, she wants us to skip the stigma
Outside of her clinical practice and academic work, this is one of the biggest things she works on, reducing the stigma attached to Alzheimer’s both publicly and professionally:
Alzheimer’s Disease in Physicians: Assessing Professional Competence and Tempering Stigma
Want more from Dr. Devi?
You might enjoy this interview:
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And here’s her book:
Enjoy!
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Exercising With Less Soreness!
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An Ancient Sports Drink & Healing Potion, Now With Modern Science?
Ginseng has many health benefits, we talked about 8 of them in this previous edition of 10almonds:
…but we’ve somehow never yet done a Monday’s Research Review for it! We must do one, one of these days. For now though, it’s Saturday’s Life Hacks, and we’re here with…
Speeding up recovery after muscle damage
We talked about this topic before too:
Overdone It? How To Speed Up Recovery After Exercise
…which gives very good advice (including some supplements that help), but was published before the latest science that we’re going to talk about today:
A team of researchers all so very recently found that ginseng also reduces muscular fatigue and, importantly, hastens recovery of muscle damage caused by exercise.
And that’s not all…
❝It should also be noted that, by reducing fatigue, taking ginseng on a regular basis may also help reduce the risk of injury, particularly in the case of muscles or ligaments, which can in turn improve athletic performance.❞
This means that it can be taken regularly and prophylactically, as they found:
❝taking ginseng systematically for a long time can mitigate the response of the biological markers, mainly creatine kinase (CK) and interleukin 6 (IL-6), responsible for exercise-induced muscle damage and inflammation.❞
You may be thinking “isn’t creatine good?” and yes, yes it is:
Creatine: Very Different For Young & Old People
…however, creatine kinase is not creatine. Creatine kinase (CK) is an enzyme that affects the creatine (to put it in few words, without getting into the fascinating biochemistry of this). Now, it’s necessary for us to have some CK (or else we wouldn’t be able to do what we need to with the creatine), but elevated levels often indicate some sort of problem going on:
Approach to asymptomatic creatine kinase elevation
…so ginseng keeping those things balanced is a good thing.
The study
We’ve talked a lot about the findings and what they mean, but if you’d like to read the paper for yourself, you can read it here:
Effect of Ginseng Intake on Muscle Damage Induced by Exercise in Healthy Adults
Where to get ginseng
If you’d like to take ginseng as a supplement, then there are many ways to do so, with the most common being capsules or ginseng tea, which has an interesting and distinctive taste, and is very refreshing. Here are examples on Amazon, for your convenience:
Enjoy!
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The Joy of Movement – by Dr. Kelly McGonigal
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We know that exercise is good for us. Obviously. We know that that exercise will make us feel good. In principle.
So why is that exercise bike wearing the laundry instead, or the weights bench gathering dust?
Dr. Kelly McGonigal explores our relationship with exercise, both the formal (organized, planned, exercise that looks like exercise) and the informal (ad hoc, casual, exercise that looks like just having a nice time).
Moreover: she starts with the why, and moves to the how. The trick she plays on us here is to get us very fired up on the many tangible benefits that will make a big difference in all areas of our lives… And then shows us how easy it can be to unlock those, and how we can make it even easier.
And as to making it stick? Exercise can be addictive, and/but it’s one of the few addictions that is almost always healthful rather than deleterious. And, there are tricks we can use to heighten that, thresholds that once we pass, we just keep going.
She also looks at the evolutionary tendency of exercise to be connection-building, as part of a community, friend group, or couple.
And, yes, she gives attention also to undertaking exercise when circumstances aren’t ideal, or our bodies simply won’t allow certain things.
In short: if any book can get you shaking off the cobwebs, this is the one.
Click here to check out The Joy Of Movement on Amazon today, and get your body moving!
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How To *Really* Pick Up (And Keep!) Those Habits
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The Healthiest Habit-Building
Why was that book “Atomic Habits” called that? It wasn’t just because it’s a catchy title…
Habits are—much like atoms—things that are almost imperceptibly small, yet when stacked, they make up the substance of many much larger and more obvious things, and also contain an immense amount of potential power.
About that power…
Habits are the “compound interest” of natural human life. Every action we take, every decision we make, makes our life (often imperceptibly) better or worse. But getting even just 1% better or 1% worse at something every day? That’s going to not just add up over time… It’ll actively compound over time.
Habits will snowball one way or the other, good or bad. So, we want to control that snowball so that it works for us rather than against us.
Thus, we need to choose habits that are helpful to us, rather than those that are harmful to us. Top examples include:
- Making healthy food choices rather than unhealthy ones
- Moving our body regularly rather than being sedentary
- Having a good bedtime/morning routine rather than a daily chaotic blur
- Learning constantly rather than digging into old beliefs out of habit
- Forging healthy relationships rather than isolating ourselves
We all know that to make a habit stick, we need to practice it regularly, with opinions varying on how long it takes for something to become habit. Some say 21 days; some say 66. The number isn’t the important part!
What is important
You will never get to day 66, much less will you get to day 366, if you don’t first get to day 6 (New Year’s Resolutions, anyone?).
So in the early days especially, when the habit is most likely to get dropped, it’s critical to make the habit as easy as possible to form.
That means:
- The habit should be made as pleasant as possible
- (e.g. by making modifications to it if it’s not already intrinsically pleasant)
- The habit should take under 2 minutes to do at first
- (no matter if it takes longer than 2 minutes to be useful; it’ll never be useful if you don’t first get it to stick, so make your initial commitment only 2 minutes, just to get in the habit)
- The habit should have cues to remind you
- (as it’s not habit yet, you will need to either set a reminder on your phone, or leave a visual reminder, such as your workout clothes laid out ready for you in the morning, or a bowl of fruit in plain view where you spend a lot of time)
What gets measured, gets done
Streaks are a great way to do this. Habit-tracking apps help. Marks on a calendar or in a journal are also totally fine.
What can help especially, and that a lot of people don’t do, is to have a system of regular personal reviews—like a work “performance review”, but for oneself and one’s own life.
Set a reminder or write on the calendar / in your diary, to review monthly, or weekly if you prefer, such things as:
- How am I doing in the areas of life that are important to me?
- Have a list of the areas of life that are important to you, by the way, and genuinely reflect on each of them, e.g:
- Health
- Finances
- Relationships
- Learning
- Sleep
- Etc
- Have a list of the areas of life that are important to you, by the way, and genuinely reflect on each of them, e.g:
- What is working for me, and what isn’t working for me?
- What will I do better in this next month/week?
…and then do it!
Good luck, and may it all stack up in your favor!
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