Brain Maker – by Dr. David Perlmutter
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Regular 10almonds readers probably know about the gut-brain connection already, so what’s new here?
Dr. David Perlmutter takes us on a tour of gut and brain health, specifically, the neuroprotective effect of healthy gut microbiota.
This seems unlikely! After all, vagus nerve or no, the gut microbiota are confined to the gut, and the brain is kept behind the blood-brain barrier. So how does one thing protect the other?
Dr. Perlmutter presents the relevant science, and the honest answer is, we’re not 100% sure how this happens! We do know part of it: that bad gut microbiota can result in a “leaky gut”, and that may in turn lead to such a thing as a “leaky brain”, where the blood-brain barrier has been compromised and some bad things can get in with the blood.
When it comes to gut-brain health…
Not only is the correlation very strong, but also, in tests where someone’s gut microbiota underwent a radical change, e.g. due to…
- antibiotics (bad)
- fasting (good)
- or a change in diet (either way)
…their brain health changed accordingly—something we can’t easily check outside of a lab, but was pretty clear in those tests.
We’re also treated to an exposé on the links between gut health, brain health, inflammation, and dementia… Which links are extensive.
In closing, we’ll mention that throughout this book we’re also given many tips and advices to improve our gut/brain health, reverse damage done already, and set ourselves up well for the future.
Click here to check out “Brain Maker” on Amazon and take care of this important part of your health!
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Avoiding Razor Burn, Ingrown Hairs & Other Shaving Irritation
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How Does The Video Help?
Dr. Simi Adedeji’s incredibly friendly persona makes this video (below) on avoiding skin irritation, ingrown hairs, and razor burn after shaving a pleasure to watch.
To keep things simple, she breaks down her guide into 10 simple tips.
What Are The 10 Simple Tips?
Tip 1: Prioritize Hydration. Shaving dry hair can lead to increased skin irritation, so Dr. Simi recommends moistening the hair by showering or using a warm, wet towel for 2-4 minutes before getting the razor out.
Tip 2: Avoid Dry Shaving. Dry shaving not only removes hair but can also remove the protective upper layer of skin, which contributes to razor burn. To prevent this, simply use some shaving gel or cream.
Tip 3: Keep Blades New and Sharp. This one’s simple: dull blades can cause skin irritation, whilst a sharp blade ensures a smoother and more comfortable shaving experience.
Tip 4: Avoid Shaving the Same Area Repeatedly. Multiple passes over the same area can remove skin layers, leading to cuts and irritation. Aim to shave each area only once for safer results.
Tip 5: Consider Hair Growth Direction. Shaving in the direction of hair growth results in less irritation, although it may not provide the closest shave.
Tip 6: Apply Gentle Pressure While Shaving. Excessive pressure can lead to cuts and nicks. Use a gentle touch to reduce these risks.
Tip 7: Incorporate Exfoliation into Your Routine. Exfoliating helps release trapped hairs and reduces the risk of ingrown hairs. For those with sensitive skin, it’s recommended to exfoliate either two days before or after shaving.
Tip 8: Avoid Excessive Skin Stretching. Over-stretching the skin during shaving can cause hairs to become ingrown.
Tip 9: Moisturize After Shaving. Shaving can compromise the skin barrier, leading to dryness. Using a moisturizer can be a simple fix.
Tip 10: Regularly Rinse Your Blade. Make sure that, during the shaving process, you are rinsing your blade frequently to remove hair and skin debris. This keeps it sharp during your shave.
If this summary doesn’t do it for you, then you can watch the full video here:
How did you find that video? If you’ve discovered any great videos yourself that you’d like to share with fellow 10almonds readers, then please do email them to us!
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Lower Your Cortisol! (Here’s Why & How)
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Cortisol, or “the stress hormone” to its friends, is produced by your adrenal glands, and is generally considered “not fun”.
It does serve a purpose, of course, just like almost everything else our body does. It serves as part of the “fight or flight” response, for example, and helps you to wake up in the morning.
While you do need some cortisol (and a small percentage of people have too little), most of us have too much.
Why? Simply put, modern life is not what 200,000* years of human evolution prepared us for:
- Agriculture (which allowed us to settle down and cease being nomadic) happened during the last 6% of those 200,000 years.
- The Industrial Revolution and the onset of modern capitalism happened during only during the last 0.1% of those 200,000 years.
*the 200,000 years figure is conservative and doesn’t take into account the 200,000,000 years of pre-hominid mammalian evolution. Doing so, on the basis of the mammalian brain & physiology being what’s important here, means our modern stressors have been around for <0.0001% of the time we have.
So guess what, our bodies haven’t caught up. As far as our bodies are concerned, we are supposed to be enjoying the sunshine of grassy plains and the shade of woodland while eating fruit.
- When the alarm clock goes off, our body panics and prepares us to either flee or help fight the predator, because why else would we have been woken so?
- When we have a pressing deadline for work, our brain processes this as “if we don’t do this, we will literally starve and die”.
- When people are upset or angry with us, there’s a part of our brain that fears exile from the tribe and resultant death.
…and so on.
Health Risks of High Cortisol
The long-term stressors are the biggest issue for health. Unless you have a heart condition or other relevant health problem, almost anyone can weather a brief unpleasant surprise. But if something persists? That prompts the body to try to protect you, bless it. The body’s attempts backfire, because…
- One way it does this by making sure to save as much food as possible in the form of body fat
- It’ll also increase your appetite, to make sure you eat anything you can while you still can
- It additionally tries to protect you by keeping you on the brink of fight-or-flight readiness, e.g:
- High blood pressure
- High blood sugar levels
- Rapid mood changes—gotta be able to do those heel-turns as necessary and react quickly to any possible threat!
Suffice it to say, these things are not good for your long-term health.
That’s the “Why”—now here’s the “How”:
Lowering your cortisol levels mostly means lowering your stress and/or lowering your stress response. We previously gave some powerful tools for lowering anxiety, which for these purposes amounts to the same thing.
However, we can also make nutritional and lifestyle changes that will reduce our cortisol levels, for example:
- Reduce (ideally: eliminate from your lifestyle) caffeine
- Reduce (ideally: eliminate from your lifestyle) alcohol
- Yes, really. While many understandably turn to alcohol specifically to help manage stress, it only makes it worse long-term.
- Additionally, alcohol directly stimulates cortisol production, counterintuitive as that may be.
Read: Alcohol, Aging, and the Stress Response ← full article (with 37 sources of its own) from the NYMC covering how alcohol stimulates cortisol production and what that means for us
As well as reductions/eliminations, are some things you can add into your lifestyle that will help!
We’ve written previously about some:
Read: Ashwagandha / Read: L-Theanine / Read: CBD Oil
Other things include, no surprises here:
- The Mediterranean diet (nutritious and delicious): https://10almonds.com/mediterranean-diet
- Get 7–9 hours (good quality!) sleep per night: https://10almonds.com/time-pillow-talk
- Get regular exercise (the regularity matters most!): https://10almonds.com/keep-on-keeping-on
Progressive Relaxation
We’ll give this one its own section because we’ve not talked about it before. Maybe you’re familiar. If not, then in a nutshell: progressive relaxation means progressively tensing and then relaxing each part of your body in turn.
Why does this work? Part of it is just a physical trick involving biofeedback and the natural function of muscles to contract and relax in turn, but the other part is even cleverer:
It basically tricks the most primitive part of your brain, the limbic system, into thinking you had a fight and won, telling it “thank you very much for the cortisol but we don’t need it anymore”.
Take a Hike! Or a Stroll… You Do You!
Last but not least: go connect with your roots. Spend time in the park, or at least the garden. Have a picnic, if the weather suits. Go somewhere you can spend time around leafy green things under a blue sky (we realize the blue sky may be subject to availability in some locations, but do what you can!).
Remember also: just as your body’s responses will be tricked by the alarm clock or the housework, they will also be easily tricked by blue and green stuff around you. If a sunny garden isn’t available in your location, a picture of one as your desktop background is the next best thing.
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What’s the difference between physical and chemical sunscreens? And which one should you choose?
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Sun exposure can accelerate ageing, cause skin burns, erythema (a skin reaction), skin cancer, melasmas (or sun spots) and other forms of hyperpigmentation – all triggered by solar ultraviolet radiation.
Approximately 80% of skin cancer cases in people engaged in outdoor activities are preventable by decreasing sun exposure. This can be done in lots of ways including wearing protective clothing or sunscreens.
But not all sunscreens work in the same way. You might have heard of “physical” and “chemical” sunscreens. What’s the difference and which one is right for you?
How sunscreens are classified
Sunscreens are grouped by their use of active inorganic and organic ultraviolet (UV) filters. Chemical sunscreens use organic filters such as cinnamates (chemically related to cinnamon oil) and benzophenones. Physical sunscreens (sometimes called mineral sunscreens) use inorganic filters such as titanium and zinc oxide.
These filters prevent the effects of UV radiation on the skin.
Organic UV filters are known as chemical filters because the molecules in them change to stop UV radiation reaching the skin. Inorganic UV filters are known as physical filters, because they work through physical means, such as blocking, scattering and reflection of UV radiation to prevent skin damage.
Nano versus micro
The effectiveness of the filters in physical sunscreen depends on factors including the size of the particle, how it’s mixed into the cream or lotion, the amount used and the refraction index (the speed light travels through a substance) of each filter.
When the particle size in physical sunscreens is large, it causes the light to be scattered and reflected more. That means physical sunscreens can be more obvious on the skin, which can reduce their cosmetic appeal.
Nanoparticulate forms of physical sunscreens (with tiny particles smaller than 100 nanometers) can improve the cosmetic appearance of creams on the skin and UV protection, because the particles in this size range absorb more radiation than they reflect. These are sometimes labelled as “invisible” zinc or mineral formulations and are considered safe.
So how do chemical sunscreens work?
Chemical UV filters work by absorbing high-energy UV rays. This leads to the filter molecules interacting with sunlight and changing chemically.
When molecules return to their ground (or lower energy) state, they release energy as heat, distributed all over the skin. This may lead to uncomfortable reactions for people with skin sensitivity.
Generally, UV filters are meant to stay on the epidermis (the first skin layer) surface to protect it from UV radiation. When they enter into the dermis (the connective tissue layer) and bloodstream, this can lead to skin sensitivity and increase the risk of toxicity. The safety profile of chemical UV filters may depend on whether their small molecular size allows them to penetrate the skin.
Chemical sunscreens, compared to physical ones, cause more adverse reactions in the skin because of chemical changes in their molecules. In addition, some chemical filters, such as dibenzoylmethane tend to break down after UV exposure. These degraded products can no longer protect the skin against UV and, if they penetrate the skin, can cause cell damage.
Due to their stability – that is, how well they retain product integrity and effectiveness when exposed to sunlight – physical sunscreens may be more suitable for children and people with skin allergies.
Although sunscreen filter ingredients can rarely cause true allergic dermatitis, patients with photodermatoses (where the skin reacts to light) and eczema have higher risk and should take care and seek advice.
What to look for
The best way to check if you’ll have a reaction to a physical or chemical sunscreen is to patch test it on a small area of skin.
And the best sunscreen to choose is one that provides broad-spectrum protection, is water and sweat-resistant, has a high sun protection factor (SPF), is easy to apply and has a low allergy risk.
Health authorities recommend sunscreen to prevent sun damage and cancer. Chemical sunscreens have the potential to penetrate the skin and may cause irritation for some people. Physical sunscreens are considered safe and effective and nanoparticulate formulations can increase their appeal and ease of use.
Yousuf Mohammed, Dermatology researcher, The University of Queensland and Khanh Phan, Postdoctoral research associate, Frazer Institute, The University of Queensland
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Once-A-Week Strategy to Stop Procrastination – by Brad Meir
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Procrastination is perhaps the most frustrating bad habit to kick!
We know we should do the things. We know why we should do the things. We want to do the things. We’re afraid of what will happen if we don’t do the things. And then we… don’t do the things? What is going on?!
Brad Meir has answers, and—what a relief—solutions. But enough about him, because first he wants to focus a little on you:
Why do you procrastinate? No, you’re probably not “just lazy”, and he’ll guide you through figuring out what it is that makes you procrastinate. There’s an exploration of various emotions here, as well as working out: what type of procrastinator are you?
Then, per what you figured out with his guidance, exercises, and tests, it’s time for an action plan.
But, importantly: one you can actually do, because it won’t fall foul of the problems you’ve been encountering so far. The exact mechanism you’ll use may vary a bit based on you, but some tools here are good for everyone—as well as an outline of the mistakes you could easily make, and how to avoid falling into those traps. And, last but very definitely not least, his “once a week plan”, per the title.
All in all, a highly recommendable and potentially life-changing book.
Grab Your Copy of “Once-A-Week Strategy to Stop Procrastination” NOW (don’t put it off!)
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How Emotions Are Made – by Dr. Lisa Feldman Barrett
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We’ve previously reviewed Dr. Barrett’s (also good) book Seven And A Half Lessons About The Brain, and this one is very different, and of more practical use:
The main thrust of the book is: the bioessentialist model of emotions is flawed; there is also no Platonic perfect form of any given emotion, and in fact emotions are constructed by the brain as a learned adaptive response.
She argues this from the dual vectors of on the one hand hard sciences of affective neuroscience and clinical psychology, and on the other hand sociology and anthropology.
In the category of criticism: Dr. Barrett, a very well-known and well-respected cognitive neuroscientist, is not an expert on sociology and anthropology, and some of her claims there are verifiably false.
However, most of the book is given over the psychophysiology, which is entirely her thing, and she explains it clearly and simply while backing everything up with mountains of data.
The usefulness of this book is chiefly: if we understand that emotions are not innate and are instead constructed adaptive (and sometimes maladaptive) neurological responses to stimuli and associations, we can set about rewiring things a little in accord with what’s actually more beneficial to us. The book also outlines how.
Bottom line: if you’d like to be able to not merely manage emotions as they are, but also prune and/or grow them from the stem up, then this book provides a robustly scientific approach for doing that.
Click here to check out How Emotions Are Made, and get more discerning about yours!
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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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