The Brain-Skin Doctor
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Of Brains And Breakouts
Today’s spotlight is on Dr. Claudia Aguirre. She’s a molecular neuroscientist, and today she’s going to be educating us about skin.
What? Why?
When we say “neuroscience”, we generally think of the brain. And indeed, that’s a very important part of it.
We might think about eyes, which are basically an extension of the brain.
We don’t usually think about skin, which (just like our eyes) is constantly feeding us a lot of information about our surroundings, via a little under three million nerve endings. Guess where the other ends of those nerves lead!
There’s a constant two-way communication going on between our brain and our skin.
What does she want us to know?
Psychodermatology
The brain and the skin talk to each other, and maladies of one can impact the other:
- Directly, e.g. stress prompting skin breakouts (actually this is a several-step process physiologically, but for the sake of brevity we’ll call this direct)
- Indirectly, e.g. nervous disorders that result in people scratching or picking at their skin, which prompts a whole vicious cycle of one thing making the other worse
Read more: Psychodermatology: The Brain-Skin Connection
To address both kinds of problems, clearly something beyond moisturizer is needed!
Mindfulness (meditation and beyond)
Mindfulness is a well-evidenced healthful practice for many reasons, and Dr. Aguirra argues the case for it being good for our skin too.
As she points out,
❝Cultural stress and anxiety can trigger or aggravate many skin conditions—from acne to eczema to herpes, psoriasis, and rosacea.
Conversely, a disfiguring skin condition can trigger stress, anxiety, depression, and even suicide.
Chronic, generalized anxiety can create chronic inflammation and exacerbate inflammatory skin conditions, such as those I mentioned previously.
Chronic stress can result in chronic anxiety, hypervigilance, poor sleep, and a whole cascade of effects resulting in a constant breakdown of tissues and organs, including the skin.❞
So, she recommends mindfulness-based stress reduction (MBSR), for the above reasons, along with others!
Read more: Mind Matters
How to do it: No-Frills, Evidence-Based Mindfulness
And as for “and beyond?”
Do you remember in the beginning of the pandemic, when people were briefly much more consciously trying to avoid touching their faces so much? That, too, is mindfulness. It may have been a stressed and anxious mindfulness for many*, but mindfulness nonetheless.
*which is why “mindfulness-based stress reduction” is not a redundant tautology repeated more than once unnecessarily, one time after another 😉
So: do try to keep aware of what you are doing to your skin, and so far as is reasonably practicable, only do the things that are good for it!
The skin as an endocrine organ
Nerves are not the only messengers in the body; hormones do a lot of our body’s internal communication too. And not just the ones everyone remembers are hormones (e.g. estrogen, testosterone, although yes, they do both have a big impact on skin too), but also many more, including some made in the skin itself!
Dr. Aguirra gives us a rundown of common conditions, the hormones behind them, and what we can do if we don’t want them:
Read more: Rethinking The Skin As An Endocrine Organ
Take-away advice:
For healthy skin, we need to do more than just hydrate, get good sleep, have good nutrition, and get a little sun (but not too much).
- We should also practice mindfulness-based stress reduction, and seek help for more serious mental health issues.
- We should also remember the part our hormones play in our skin, and not just the obvious ones.
Did you know that vitamin D is also a hormone, by the way? It’s not the only hormone at play in your skin by a long way, but it is an important one:
Society for Endocrinology | Vitamin D
Want to know more?
You might like this interview with Dr. Aguirre:
The Brain in Our Skin: An Interview with Dr. Claudia Aguirre
Take care!
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Super Gut – by Dr. William Davis
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
You may be wondering: what sets this book apart from the other gut health books we’ve reviewed? For this one, mostly it’s depth.
This is the most scientifically dense book we’ve reviewed on gut health, so if you’re put off by that, this might not be one for you. However, you don’t need prior knowledge, as he does explain things as he goes. The advice in this book is not just the usual “gut health 101” stuff, either!
A particular strength of this book is that it looks at a wide variety of gut- and gut-related disorders, and ways certain readers may need to do different things than others, to address those problems on the path to good gut health.
The style, for all its hard science content, is quite sensationalist, and that may take some getting used to for non-Americans. However, it doesn’t affect the content!
Bottom line: if you just want simple basic advice, then probably best to skip this one. However, if you are sincerely serious about gut health (or just like reading this sort of thing because learning is satisfying), then this book is packed with relevant and detailed information.
Click here to check out Super Gut, and get to know and improve yours!
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Why ’10almonds’? Newsletter Name Explained
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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: Why is your newsletter called 10almonds? Maybe I missed it in the intro email, but my curiosity wants to know the significance. Thanks!”
It’s a reference to a viral Facebook hoax! There was a post going around that claimed:
❝HEADACHE REMEDY. Eat 10–12 almonds, the equivalent of two aspirins, next time you have a headache❞ ← not true!
It made us think about how much health-related disinformation there was online… So, calling ourselves 10almonds was a bit of a tongue-in-cheek reference to that story… but also a reminder to ourselves:
We must always publish information with good scientific evidence behind it!
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Body by Science – by Dr. Doug McGuff & John Little
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The idea that you’ll get a re-sculpted body at 12 minutes per week is a bold claim, isn’t it? Medical Doctor Doug McGuff and bodybuilder John Little team up to lay out their case. So, how does it stand up to scrutiny?
First, is it “backed by rigorous research” as claimed? Yes… with caveats.
The book uses a large body of scientific literature as its foundation, and that weight of evidence does support this general approach:
- Endurance cardio isn’t very good at burning fat
- Muscle, even just having it without using it much, burns fat to maintain it
- To that end, muscle can be viewed as a fat-burning asset
- Muscle can be grown quickly with short bursts of intense exercise once per week
Why once per week? The most relevant muscle fibers take about that long to recover, so doing it more often will undercut gains.
So, what are the caveats?
The authors argue for slow reps of maximally heavy resistance work sufficient to cause failure in about 90 seconds. However, most of the studies cited for the benefits of “brief intense exercise” are for High Intensity Interval Training (HIIT). HIIT involves “sprints” of exercise. It doesn’t have to be literally running, but for example maxing out on an exercise bike for 30 seconds, slowing for 60, maxing out for 30, etc. Or in the case of resistance work, explosive (fast!) concentric movements and slow eccentric movements, to work fast- and slow-twitch muscle fibers, respectively.
What does this mean for the usefulness of the book?
- Will it sculpt your body as described in the blurb? Yes, this will indeed grow your muscles with a minimal expenditure of time
- Will it improve your body’s fat-burning metabolism? Yes, this will indeed turn your body into a fat-burning machine
- Will it improve your “complete fitness”? No, if you want to be an all-rounder athlete, you will still need HIIT, as otherwise anything taxing your under-worked fast-twitch muscle fibers will exhaust you quickly.
Bottom line: read this book if you want to build muscle efficiently, and make your body more efficient at burning fat. Best supplemented with at least some cardio, though!
Click here to check out Body by Science, and get re-sculpting yours!
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How Not to Age – by Dr. Michael Greger
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First things first: it’s a great book, and it’s this reviewer’s favorite of Dr. Greger’s so far (for posterity: it’s just been published and this reviewer has just finished reading the copy she got on pre-order)
Unlike many popular physician authors, Dr. Greger doesn’t rehash a lot of old material, and instead favours prioritizing new material in each work. Where appropriate, he’ll send the reader to other books for more specific information (e.g: you want to know how to avoid premature death? Go read How Not To Die. You want to know how to lose weight? How Not To Diet. Etc).
In the category of new information, he has a lot to offer here. And with over 8,000 references, it’s information, not conjecture. On which note, we recommend the e-book version if that’s possible for you, for three reasons:
- It’s possible to just click the references and be taken straight to the cited paper itself online
- To try to keep the book’s size down, Dr. Greger has linked to other external resources too
- The only negative reviews on Amazon, so far, are people complaining that the print copy’s text is smaller than they’d like
For all its information-density (those 8,000+ references are packed into 600ish pages), the book is very readable even to a lay reader; the author is a very skilled writer.
As for the content, we can’t fit more than a few sentences here so forgive the brevity, but we’ll mention that he covers:
- Slowing 11 pathways of aging
- The optimal anti-aging regimen according to current best science
- Preserving function (specific individual aspects of aging, e.g. hearing, sight, cognitive function, sexual function, hair, bones, etc)
- “Dr. Greger’s Anti-Aging Eight”
In terms of “flavor” of anti-aging science, his approach can be summed up as: diet and lifestyle as foundation; specific supplements and interventions as cornerstones.
Bottom line: this is now the anti-aging book.
Click here to check out How Not To Age, and look after yourself with the best modern science!
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Treat Your Own Knee – by Robin McKenzie
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First, a note about the author: he’s a physiotherapist and not a doctor, but with 40 years of practice to his name and 33 letters after his name (CNZM OBE FCSP (Hon) FNZSP (Hon) Dip MDT Dip MT), he seems to know his stuff.
The book covers recognizing the difference between arthritis, degeneration, or normal wear and tear, before narrowing down what your actual problem is and what can be done about it.
While there are many possible causes of knee pain (and by causes, we mean the first-level cause, such as “bad posture” or “old sports injury” or “inflammatory diet” or “repetitive strain” etc, not second-level causes that are also symptoms, like inflammation), McKenzie’s approach involves customizing his system to your body’s specific problems and needs. That’s what most of the book is about.
The style is direct and to-the-point; there’s no sensationalization here nor a feel of being sold anything. There’s lots of science scattered throughout, but all with the intent of enabling the reader to understand what’s going on with the problems, processes, and solutions, and why/how the things that work, work. Where there are exercises offered they are clearly-described and well-illustrated.
Bottom line: this is not a fancy book but it is an effective one. If you have knee pain, this is a very worthwhile one to read.
Click here to check out Treat Your Own Knee, and treat your own knee!
PS: if you have musculoskeletal problems elsewhere in your body, you might want to check out the rest of his body parts series (back, hip, neck, wrist, ankle, etc) for the one that’s tailored to your specific problem.
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Foot Drop!
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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
❝Interesting about DVT after surgery. A friend recently got diagnosed with foot drop. Could you explain that? Thank you.❞
First, for reference, the article about DVT after surgery was:
DVT Risk Management Beyond The Socks
As for foot drop…
Foot drop is descriptive of the main symptom: the inability to raise the front part of the foot due to localized weakness/paralysis. Hence, if a person with foot drop dangles their feet over the edge of the bed, for example, the affected foot will simply flop down, while the other (if unaffected) can remain in place under its own power. The condition is usually neurological in origin, though there are various more specific causes:
When walking unassisted, this will typically result in a distinctive “steppage gait”, as it’s necessary to lift the foot higher to compensate, or else the toes will scuff along the ground.
There are mobility aids that can return one’s walking to more or less normal, like this example product on Amazon.
Incidentally, the above product will slightly shorten the lifespan of shoes, as it will necessarily pull a little at the front.
There are alternatives that won’t like this example product on Amazon, but this comes with the different problem that it limits the user to stepping flat-footedly, which is not only also not an ideal gait, but also, will serve to allow any muscles down there that were still (partially or fully) functional to atrophy. For this reason, we’d recommend the first product we mentioned over the second one, unless your personal physiotherapist or similar advises otherwise (because they know your situation and we don’t).
Both have their merits, though:
Trends and Technologies in Rehabilitation of Foot Drop: A Systematic Review
Of course, prevention is better than cure, so while some things are unavoidable (especially when it comes to neurological conditions), we can all look after our nerve health as well as possible along the way:
Peripheral Neuropathy: How To Avoid It, Manage It, Treat It
…as well as the very useful:
What Does Lion’s Mane Actually Do, Anyway?
…which this writer personally takes daily and swears by (went from frequent pins-and-needles to no symptoms and have stayed that way, and that’s after many injuries over the years).
If you’d like a more general and less supplements-based approach though, check out:
Steps For Keeping Your Feet A Healthy Foundation
Take care!
Don’t Forget…
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