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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Q&A with the 10almonds Team
Q: Very interested in this article on CBD oil in the states. hope you do another one in the future with more studies done on people and more information on what’s new as far as CBD oil goes
A: We’re glad you enjoyed it! We’ll be sure to revisit CBD in the future—partly because it was a very popular article, and partly because, as noted, there is a lot going on there, research-wise!
And yes, we prefer human studies rather than mouse/rat studies where possible, too, and try to include those where we find them. In some cases, non-human animal studies allow us to know things that we can’t know from human studies… because a research institution’s ethics board will greenlight things for mice that it’d never* greenlight for humans.
Especially: things that for non-human animals are considered “introduction of external stressors” while the same things done to humans would be unequivocally called “torture”.
Animal testing in general is of course a moral quagmire, precisely because of the suffering it causes for animals, while the research results (hopefully) can be brought to bear to reduce to suffering of humans. We’re a health and productivity newsletter, not a philosophical publication, but all this to say: we’re mindful of such too.
And yes, we agree, when studies are available on humans, they’re always going to be better than the same study done on mice and rats.
As a topical aside, did you know there’s a monument to laboratory mice and all they’ve (however unintentionally) done for us?
❝The quirky statue depicts an anthropomorphic mouse as an elderly woman, complete with glasses balanced atop its nose. Emerging from two knitting needles in its hands is the recognizable double-helix of a strand of DNA.❞
~ Smithsonian Magazine
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Statins: Study Insights
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It’s Q&A Day at 10almonds!
Q: Can you let us know about more studies that have been done on statins? Are they really worth taking?
That is a great question! We imagine it might have been our recent book recommendation that prompted it? It’s quite a broad question though, so we’ll do that as a main feature in the near future!
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Does intermittent fasting increase or decrease our risk of cancer?
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Research over the years has suggested intermittent fasting has the potential to improve our health and reduce the likelihood of developing cancer.
So what should we make of a new study in mice suggesting fasting increases the risk of cancer?
Stock-Asso/Shutterstock What is intermittent fasting?
Intermittent fasting means switching between times of eating and not eating. Unlike traditional diets that focus on what to eat, this approach focuses on when to eat.
There are lots of commonly used intermittent fasting schedules. The 16/8 plan means you only eat within an eight-hour window, then fast for the remaining 16 hours. Another popular option is the 5:2 diet, where you eat normally for five days then restrict calories for two days.
In Australia, poor diet contributes to 7% of all cases of disease, including coronary heart disease, stroke, type 2 diabetes, and cancers of the bowel and lung. Globally, poor diet is linked to 22% of deaths in adults over the age of 25.
Intermittent fasting has gained a lot of attention in recent years for its potential health benefits. Fasting influences metabolism, which is how your body processes food and energy. It can affect how the body absorbs nutrients from food and burns energy from sugar and fat.
What did the new study find?
The new study, published in Nature, found when mice ate again after fasting, their gut stem cells, which help repair the intestine, became more active. The stem cells were better at regenerating compared with those of mice who were either totally fasting or eating normally.
This suggests the body might be better at healing itself when eating after fasting.
However, this could also have a downside. If there are genetic mutations present, the burst of stem cell-driven regeneration after eating again might make it easier for cancer to develop.
Polyamines – small molecules important for cell growth – drive this regeneration after refeeding. These polyamines can be produced by the body, influenced by diet, or come from gut bacteria.
The findings suggest that while fasting and refeeding can improve stem cell function and regeneration, there might be a tradeoff with an increased risk of cancer, especially if fasting and refeeding cycles are repeated over time.
While this has been shown in mice, the link between intermittent fasting and cancer risk in humans is more complicated and not yet fully understood.
What has other research found?
Studies in animals have found intermittent fasting can help with weight loss, improve blood pressure and blood sugar levels, and subsequently reduce the risks of diabetes and heart disease.
Research in humans suggests intermittent fasting can reduce body weight, improve metabolic health, reduce inflammation, and enhance cellular repair processes, which remove damaged cells that could potentially turn cancerous.
However, other studies warn that the benefits of intermittent fasting are the same as what can be achieved through calorie restriction, and that there isn’t enough evidence to confirm it reduces cancer risk in humans.
What about in people with cancer?
In studies of people who have cancer, fasting has been reported to protect against the side effects of chemotherapy and improve the effectiveness of cancer treatments, while decreasing damage to healthy cells.
Prolonged fasting in some patients who have cancer has been shown to be safe and may potentially be able to decrease tumour growth.
On the other hand, some experts advise caution. Studies in mice show intermittent fasting could weaken the immune system and make the body less able to fight infection, potentially leading to worse health outcomes in people who are unwell. However, there is currently no evidence that fasting increases the risk of bacterial infections in humans.
So is it OK to try intermittent fasting?
The current view on intermittent fasting is that it can be beneficial, but experts agree more research is needed. Short-term benefits such as weight loss and better overall health are well supported. But we don’t fully understand the long-term effects, especially when it comes to cancer risk and other immune-related issues.
Since there are many different methods of intermittent fasting and people react to them differently, it’s hard to give advice that works for everyone. And because most people who participated in the studies were overweight, or had diabetes or other health problems, we don’t know how the results apply to the broader population.
For healthy people, intermittent fasting is generally considered safe. But it’s not suitable for everyone, particularly those with certain medical conditions, pregnant or breastfeeding women, and people with a history of eating disorders. So consult your health-care provider before starting any fasting program.
Amali Cooray, PhD Candidate in Genetic Engineering and Cancer, WEHI (Walter and Eliza Hall Institute of Medical Research)
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Zero Sugar / One Month – by Becky Gillaspy
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We’ve reviewed books about the evils of sugar before, so what makes this one different?
This one has a focus on helping the reader quit it. It assumes we already know the evils of sugar (though it does cover that too).
It looks at the mechanisms of sugar addiction (habits-based and physiological), and how to safely and painlessly cut through those to come out the other side, free from sugar.
The author gives a day-by-day plan, for not only eliminating sugar, but also adding and including things to fill the gap it leaves, keeping us sated, energized, and happy along the way.
In the category of subjective criticism, it does also assume we want to lose weight, which may not be the case for many readers. But that’s a by-the-by and doesn’t detract from the useful guide to quitting sugar, whatever one’s reasons.
Bottom line: if you would like to quit sugar but find it hard, this book thinks of everything and walks you by the hand, making it easy.
Click here to check out Zero Sugar / One Month, and reap the health benefits!
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Food for Thought – by Lorraine Perretta
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What are “brain foods”? If you think for a moment, you can probably list a few. What this book does is better.
As well as providing the promised 50 recipes (which themselves are varied, good, and easy), Perretta explains the science of very many brain-healthy ingredients. Not just that, but also the science of a lot of brain-unhealthy ingredients. In the latter case, probably things you already knew to stay away from, but still, it’s a good reminder of one more reason why.
Nor does she merely sort things into brain-healthy (or brain-unhealthy, or brain-neutral), but rather she gives lists of “this for memory” and “this against depression” and “this for cognition” and “this against stress” and so forth.
Perhaps the greatest value of this book is in that; her clear explanations with science that’s simplified but not dumbed down. The recipes are definitely great too, though!
Bottom line: if you’d like to eat more for brain health, this book will give you many ways of doing so
Click here to check out Food for Thought, and upgrade your recipes!
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Missing Microbes – by Dr. Martin Blaser
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You probably know that antibiotic resistance is a problem, but you might not realize just what a many-headed beast antibiotic overuse is.
From growing antibiotic superbugs, to killing the friendly bacteria that normally keep pathogens down to harmless numbers (resulting in death of the host, as the pathogens multiply unopposed), to multiple levels of dangers in antibiotic overuse in the farming of animals, this book is scary enough that you might want to save it for Halloween.
But, Dr. Blaser does not argue against antibiotic use when it’s necessary; many people are alive because of antibiotics—he himself recovered from typhoid because of such.
The style of the book is narrative, but information-dense. It does not succumb to undue sensationalization, but it’s also far from being a dry textbook.
Bottom line: if you’d like to understand the real problems caused by antibiotics, and how we can combat that beyond merely “try not to take them unnecessarily”, this book is very worthy reading.
Click here to check out Missing Microbes, and learn more about yours!
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