How Stress Affects Your Body
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Dr. Sharon Bergquist gives us a tour:
Stress, from the inside out
Stress is a natural physical and emotional response to challenges or being overwhelmed. It can be beneficial in short-term situations (e.g. escape from a tiger) but is harmful when prolonged or frequent (e.g. escape the rat-race).
Immediate physiological response: cortisol, adrenaline (epinephrine), and norepinephrine are released by the adrenal glands.
The effects this has (non-exhaustive list; we’re just citing what’s in the video here):
- Cortisol impairs blood vessel function, promoting atherosclerosis.
- Adrenaline increases heart rate and blood pressure, leading to hypertension.
- Stress disrupts the brain-gut connection, causing:
- Digestive issues like irritable bowel syndrome and heartburn.
- Changes in gut bacteria composition, potentially affecting overall health.
- Cortisol increases appetite and cravings for energy-dense “comfort foods”.
- This in turn promotes visceral fat storage, which raises the risk of heart disease and insulin resistance.
- Immune-specific effects:
- Stress hormones initially aid in healing and immune defense.
- Chronic stress weakens immune function (by over-working it constantly), increasing susceptibility to infections and slowing recovery.
- Other systemic effects:
- Chronic stress shortens telomeres, which protect chromosomes. Shortened telomeres accelerate cellular aging.
- Chronic stress can also cause acne, hair loss, sexual dysfunction, headaches, muscle tension, fatigue, irritability, and difficulty concentrating.
So, how to manage this? The video says that viewing stressful situations as controllable challenges, rather than insurmountable threats, leads to better short-term performance and long-term health.
Which would be wonderful, except that usually things are stressful precisely because they are not entirely within the field of our control, and the usual advice is to tend to what we can control, and accept what we can’t.
However… That paradigm still leaves out the very big set of “this might be somewhat within our control or it might not; we really don’t know yet; we can probably impact it but what if we don’t do enough, or take the wrong approach and do the wrong thing? And also we have 17 competing stressors, which ones should we prioritize tending to first, and…” and so on.
To that end, we suggest checking out the “Want to learn more?” link we drop below the video today, as it is about managing stress realistically, in a world that, if we’re honest about it, can sometimes be frankly unmanageable.
Meanwhile, enjoy:
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Want to learn more?
You might also like to read:
Heart Health vs Systemic Stress ← this is good in and of itself, and also links to other stress-related resources of ours
Take care!
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The Top Micronutrient Deficiency In High Blood Pressure
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High blood pressure is often considered a matter of too much sodium, but there’s another micronutrient that’s critical, and a lot of people have too little of it:
The Other Special K
Potassium helps regulate blood pressure by doing the opposite of what sodium does: high sodium intake increases blood volume and pressure by retaining fluid, while potassium promotes sodium excretion through urine, reducing fluid retention and lowering blood pressure.
Clinical studies (which you can find beneath the video, if you click through to YouTube) have shown that increasing potassium intake can reduce systolic blood pressure by an average of 3.49 units, with even greater reductions (up to 7 units) at higher potassium intakes of 3,500–4,700 mg/day.
Potassium-rich foods include most fruit*, leafy greens, broccoli, lentils, and beans.
*because of some popular mentions in TV shows, people get hung up on bananas being a good source of potassium. Which they are, but they’re not even in the top 10 of fruits for potassium. Here’s a non-exhaustive list of fruits that have more potassium than bananas, portion for portion:
- Honeydew melon
- Papaya
- Mango
- Prunes
- Figs
- Dates
- Nectarine
- Cantaloupe melon
- Kiwi
- Orange
These foods also provide fiber, which aids in weight management and further lowers risks for cardiovascular disease. Increasing fiber intake by just 14g a day has been shown not only to reduce calorie consumption and promote weight loss, but also (more importantly) lower blood pressure, cholesterol, and overall health risks.
For more on all of this, enjoy:
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Want to learn more?
You might also like to read:
What Matters Most For Your Heart? Eat More (Of This) For Lower Blood Pressure ← this is about fiber; while potassium is the most common micronutrient deficiency in people with high blood pressure, fiber is the most common macronutrient deficiency, and arguably the most critical in this regard.
Take care!
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The End of Food Allergy – by Dr. Kari Nadeau & Sloan Barnett
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We don’t usually mention author credentials beyond their occupation/title. However, in this case it bears acknowledging at least the first line of the author bio:
❝Kari Nadeau, MD, PhD, is the director of the Sean N. Parker Center for Allergy and Asthma Research at Stanford University and is one of the world’s leading experts on food allergy❞
We mention this, because there’s a lot of quack medicine out there [in general, but especially] when it comes to things such as food allergies. So let’s be clear up front that Dr. Nadeau is actually a world-class professional at the top of her field.
This book is, by the way, about true allergies—not intolerances or sensitivities. It does touch on those latter two, but it’s not the main meat of the book.
In particular, most of the research cited is around peanut allergies, though the usual other common allergens are all discussed too.
The authors’ writing style is that of a science educator (Dr. Nadeau’s co-author, Sloan Barnett, is lawyer and health journalist). We get a clear explanation of the science from real-world to clinic and back again, and are left with a strong understanding, not just a conclusion.
The titular “End of Food Allergy” is a bold implicit claim; does the book deliver? Yes, actually.
The book lays out guidelines for safely avoiding food allergies developing in infants, and yes, really, how to reverse them in adults. But…
Big caveat:
The solution for reversing severe food allergies (e.g. “someone nearby touched a peanut three hours ago and now I’m in anaphylactic shock”), drug-assisted oral immunotherapy, takes 6–24 months of weekly several-hour-long clinic visits, relies on having a nearby clinic offering the service, and absolutely 100% cannot be done at home (on pain of probable death).
Bottom line: it’s by no means a magic bullet, but yes, it does deliver.
Click here to check out The End of Food Allergy to learn more!
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Hair Growth: Caffeine and Minoxidil Strategies
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Questions and Answers at 10almonds
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
This newsletter has been growing a lot lately, and so have the questions/requests, and we love that! 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
Hair growth strategies for men combing caffeine and minoxidil?
Well, the strategy for that is to use caffeine and minoxidil! Some more specific tips, though:
- Both of those things need to be massaged (gently!) into your scalp especially around your hairline.
- In the case of caffeine, that boosts hair growth. No extra thought or care needed for that one.
- In the case of minoxidil, it reboots the hair growth cycle, so if you’ve only recently started, don’t be surprised (or worried) if you see more shedding in the first three months. It’s jettisoning your old hairs because new ones were just prompted (by the minoxidil) to start growing behind them. So: it will get briefly worse before it gets better, but then it’ll stay better… provided you keep using it.
- If you’d like other options besides minoxidil, finasteride is a commonly prescribed oral drug that blocks the conversion of testosterone to DHT, which latter is what tells your hairline to recede.
- If you’d like other options besides prescription drugs, saw palmetto performs comparably to finasteride (and works the same way).
- You may also want to consider biotin supplementation if you don’t already enjoy that
- Consider also using a dermaroller on your scalp. If you’re unfamiliar, this is a device that looks like a tiny lawn aerator, with many tiny needles, and you roll it gently across your skin.
- It can be used for promoting hair growth, as well as for reducing wrinkles and (more slowly) healing scars.
- It works by breaking up the sebum that may be blocking new hair growth, and also makes the skin healthier by stimulating production of collagen and elastin (in response to the thousands of microscopic wounds that the needles make).
- Sounds drastic, but it doesn’t hurt and doesn’t leave any visible marks—the needles are that tiny. Still, practise good sterilization and ensure your skin is clean when using it.
See: How To Use A Dermaroller ← also explains more of the science of it
PS: this question was asked in the context of men, but the information goes the same for women suffering from androgenic alepoceia—which is a lot more common than most people think!
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- Both of those things need to be massaged (gently!) into your scalp especially around your hairline.
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The Best Foods For Collagen Production
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Dr. Andrea Suarez gives us the low-down on collagen synthesis and maintenance. Collagen is the most abundant protein in our body, and it can be fairly described as “the stuff that holds us together”. It’s particularly important for joints and bones too, though many people’s focus on it is for the skin. Whatever your priorities, collagen levels are something it pays to be mindful of, as they usually drop quite sharply after a certain age. What certain age? Well, that depends a lot on you, and your diet and lifestyle. But it can start to decline from the age of 30 with often noticeable drop-offs in one’s mid-40s and again in one’s mid-60s.
Showing us what we’re made of
There’s a lot more to having good collagen levels than just how much collagen we consume (which for vegetarians/vegans, will be “none”, unless using the “except if for medical reasons” exemption, which is probably a little tenuous in the case of collagen but nevertheless it’s a possibility; this exemption is usually one that people use for, say, a nasal spray vaccine that contains gelatine, or a medicinal tablet that contains lactose, etc).
Rather, having good collagen levels is also a matter of what we eat that allows us to synthesize our own collagen (which includes: its ingredients, and various “helper” nutrients), as well as what dietary adjustments we make to avoid our extant collagen getting broken down, degraded, and generally lost.
Here’s what Dr. Suarez recommends:
Protein-rich foods (but watch out)
- Protein is essential for collagen production.
- Sources: fish, soy, lean meats (but not red meats, which—counterintuitively—degrade collagen), eggs, lentils.
- Egg whites are high in lysine, vital for collagen synthesis.
- Bone broth is a natural source of collagen.
Omega-3 fatty acids
- Omega-3s are anti-inflammatory and protect skin collagen.
- Sources: walnuts, chia seeds, flax seeds, fatty fish (e.g. mackerel, sardines).
Leafy greens
- Leafy dark green vegetables (e.g. kale, spinach) are rich in vitamins C and B9.
- Vitamin C is crucial for collagen synthesis and acts as an antioxidant.
- Vitamin B9 supports skin cell division and DNA repair.
Red fruits & vegetables
- Red fruits/vegetables (e.g. tomatoes, red bell peppers) contain lycopene, an antioxidant that protects collagen from UV damage (so, that aspect is mostly relevant for skin, but antioxidants are good things to have in all of the body in any case).
Orange-colored vegetables
- Carrots and sweet potatoes are rich in vitamin A, which helps in collagen repair and synthesis.
- Vitamin A is best from food, not supplements, to avoid potential toxicity.
Fruits rich in vitamin C
- Citrus fruits, kiwi, and berries are loaded with vitamin C and antioxidants, essential for collagen synthesis and skin health.
Soy
- Soy products (e.g. tofu, soybeans) contain isoflavones, which reduce inflammation and inhibit enzymes that degrade collagen.
- Soy is associated with lower risks of chronic diseases.
Garlic
- Garlic contains sulfur, taurine, and lipoic acid, important for collagen production and repair.
What to avoid:
- Reduce foods high in advanced glycation end products (AGEs), which damage collagen and promote inflammation.
- AGEs are found in fried, roasted, or grilled fatty proteinous foods (e.g. meat, including synthetic meat, and yes, including grass-fed nicely marketed meat—although processed meat such as bacon and sausages are even worse than steaks etc).
- Switch to cooking methods like boiling or steaming to reduce AGE levels.
- Processed foods, sugary pastries, and red meats contribute to collagen degradation.
General diet tips:
- Incorporate more plant-based, antioxidant-rich foods.
- Opt for slow cooking to reduce AGEs.
- Since sustainability is key, choose foods you enjoy for a collagen-boosting diet that you won’t seem like a chore a month later.
For more on all of this, enjoy:
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Want to learn more?
You might also like to read:
We Are Such Stuff As Fish Are Made Of ← our main feature research review about collagen
Take care!
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The Gut Bacteria That Improve Your General Decision-Making In Life
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As one YouTube commenter said, “Trust your gut, but make sure you have a trustworthy gut first”!
Dr. Tracey Marks, psychiatrist, explains how:
Gut feelings and more
As you probably know, the gut and brain communicate via the vagus nerve, making gut bacteria highly influential.
How influential? Here are some key points from the video:
- Healthier gut bacteria are linked to more cautious risk-taking and future-oriented decisions.
- Gut bacteria influence serotonin (95% produced in the gut), dopamine, and neurotransmitters essential for decision-making.
- People with good gut health prioritize fairness in decision-making.
- The gut influences decision-making via neurotransmitter production, vagus nerve signaling, and inflammation control.
Gut bacteria produce metabolites (beyond the neurotransmitters mentioned above!) that affect nerve circuits for emotion and executive function. These postbiotics (postbiotics = byproducts of gut bacteria fermenting prebiotics) play a crucial role in brain health. Examples of things they make include short-chain fatty acids (butyrate), enzymes, peptides, and vitamins, which between them strengthen gut lining, reduce inflammation, regulate serotonin, and support immune function. Scientists are even exploring postbiotics for treating metabolic and inflammatory diseases.
Timeline of brain-gut axis health improvements
- Days 4–14: gut bacterial composition starts changing (you probably won’t notice anything brainwise, but you may get gas; this is normal and temporary)
- Weeks 2–6: mood and mental clarity improve (you’ll start feeling it here, most likely first in an abstract “life seems more beautiful” sort of way, plus less brain fog)
- Months 2–3: long-term neural adaptations form (this is where the decision-making improvements come in, so you’ll need some patience about this, but the mood boost you’ve now had since weeks 2–6 should make the next bit even easier).
Dr. Marks’ suggestions, to make the most of this:
- Diversify diet: aim for 30* different plant-based foods per week!
- Try fermented foods: start with small amounts of kimchi, kefir, etc.
- Increase fiber intake: add chia seeds or flaxseeds to meals!
- Limit artificial sweeteners: many of them disrupt gut bacteria.
- Maintain regular meal times: supports bacterial circadian rhythms.
- Don’t rely solely on supplements; whole foods are more effective!
*this is not a random number out of a hat; there is science behind the number! Here’s the science.
For more on all of this, enjoy:
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Want to learn more?
You might also like:
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Just Be Well – by Dr. Thomas Sult
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Firstly, what this is not: a “think yourself well” book. It’s not about just deciding to be well.
Rather, it’s about ensuring the foundations of wellness, from which the rest of good health can spring, and notably, an absence of chronic illness. In essence: enjoying chronic good health.
The prescription here is functional medicine, which stands on the shoulders of lifestyle medicine. This latter is thus briefly covered and the basics presented, but most of the book is about identifying the root causes of disease and eliminating them one by one, by taking into account the functions of the body’s processes, both in terms of pathogenesis (and thus, seeking to undermine that) and in terms of correct functioning (i.e., good health).
While the main focus of the book is on health rather than disease, he does cover a number of very common chronic illnesses, and how even in those cases where they cannot yet be outright cured, there’s a lot more that can be done for them than “take two of these and call your insurance company in the morning”, when the goal is less about management of symptoms (though that is also covered) and more about undercutting causes, and ensuring that even if one thing goes wrong, it doesn’t bring the entire rest of the system down with it (something that often happens without functional medicine).
The style is clear, simple, and written for the layperson without unduly dumbing things down.
Bottom line: if you would like glowingly good health regardless of any potential setbacks, this book can help your body do what it needs to for you.
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