Enjoy Bitter Foods For Your Heart & Brain

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When Bitter Is Better

A good general rule of thumb for “does this food contain a lot of healthy polyphenols?” is:

“is this (edible) plant bitter/astringent/pungent”?

If it is, it’s probably rich in polyphenols:

Deciphering the role of bitter and astringent polyphenols in promoting well-being

…which is why it’s no surprise that black coffee and bitter chocolate score highly, as do hot peppers and even garlic.

See also: Our Top 5 Spices: How Much Is Enough For Benefits?

Even fruits, generally considered something sweet to eat, often contain more polyphenols when they are bitter—many berries are great examples of this!

Read more: Goji Berries: Which Benefits Do They Really Have?

You can read more about the science of this here:

Sensory Nutrition and Bitterness and Astringency of Polyphenols

Important for multiple reasons (including heart and brain health)

Polyphenols have many benefits, and they’re most well known for their heart-healthy properties, but their antioxidant effect (and other mechanisms) also means these foods are generally neuroprotectants too:

A century of research shows eating these compounds can help protect against heart disease and Alzheimer’s

The science of this is not all as obvious as you might think!

It is reasonable to expect “ok, this has antioxidant effect, so it will reduce oxidative damage to brain cells too”, and while that is true (and yes, polyphenols do cross the blood-brain barrier), they also help in other ways, including through the gut:

Where to Look into the Puzzle of Polyphenols and Health? The Postbiotics and Gut Microbiota Associated with Human Metabotypes

What if I don’t like bitter/astringent/pungent foods?

If you do not have a medical condition that proscribes them (do check with your doctor if unsure), the best advice is to simply eat them anyway, and your tastes will adapt.

It will also help if you avoid sweet foods (though this too is also a good general rule of thumb!), as this will move the balance of where your brain’s “set range” is for “good taste”.

Bonus tip: dark chocolate (80%+ cocoa if possible, 95% if you can get it) and chilli peppers go great with each other. Here’s an example of a chilli chocolate product on Amazon; it’s 70% cocoa (which is not bad, but could be better). You might be able to get a higher percentage locally, especially if you ask your local chocolatière, or make it yourself!

Enjoy!

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  • Burned Out By Tuesday?

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    Avoiding Burnout, The Active Way

    This is Dr. Claudine Holt. She’s double board-certified, in Occupational & Environmental Medicine, and Lifestyle Medicine.

    In short: preventative medicine in all parts of our life.

    Hopefully, you are reading this bright-eyed and bushy-tailed and ready to take on another exciting day in this wonderful, beautiful world!

    On the other hand, it’s possible that you’re reading this semi-focussed, looking for a crumb of dopamine as much as you are looking for information.

    If you’ve ever had the “What a week!” / “It’s only Tuesday” moment, this one’s for you.

    What does Dr. Holt want us to know?

    You can recover from burnout without guilt

    Sometimes, we overreach ourselves. Sometimes, life overreaches us! Sometimes it’s not that we overcommitted—it’s just that we were taking each day as it comes, but sometimes several days gang up on us at once.

    Sometimes, even, we can feel exhausted when it seems like we haven’t done anything.

    Note: if you feel exhausted and it seems like you haven’t done anything, then be aware: you are exhausted for a reason!

    What that reason might be may vary, but contrary to popular belief, energy does not just vanish. It went somewhere.

    This goes double if you have any chronic illness(es), even if you’re not aware of having had a flare-up, chances are you were just exceptionally busy (on a cellular level).

    And it’s easy to think that “mere” cellular activity shouldn’t be exhausting, but that is 100% of where our energy transactions happen—whether or not we are consciously aware of them!

    See also: Eat To Beat Chronic Fatigue ← yes, this also covers when you are too exhausted to shop and cook like a TV chef

    Dr. Holt specializes in working with burned out medical professionals (and also specifically specializes in working with women), but there are lessons for everyone in her advice. For example:

    Fiction: ”Medicine is my calling–it’s who I am.”

    Fact: You are more than medicine! Remember that your career is just one aspect of your life. Don’t forget to create your big-picture vision and tend the garden of the other areas of your life too.

    ~ Dr. Claudine Holt

    Read more: Dr. Claudine Holt | Burnout: Fact vs Fiction

    This same thing can go for whatever part of your identity frequently follows “I’m a…”, and is somewhere that you put a lot of your energy; it could equally be a non-professional job like “homemaker”, or a relational status like “husband”, or a cultural identifier like “Christian”, or a hobby like “gardener” (assuming that is not also your profession, in which case, same item, different category).

    Indeed, a lot of women especially get hit by “the triple burden” of professional work, housework, and childcare. And it’s not even necessarily that we resent any of those things or feel like they’re a burden; we (hopefully) love our professions, homes, children. But, here’s the thing:

    No amount of love will add extra hours to the day.

    So what does she recommend doing about it, when sometimes we’re juggling things that can’t be dropped?

    Start simple, but start!

    Dr. Holt recommends to start with a smile (yes even if, and sometimes especially when, the circumstances do not feel like they merit it), and deploy some CBT tools:

    Two Hacks to Quickly Rise Above Burnout (Or Any Circumstance)

    We’ve expanded on this topic here:

    How To Manage Chronic Stress

    With a more level head on, it becomes easier to take on the next step, which creating healthy boundariesand that doesn’t just mean with other people!

    It also means slaying our own perfectionism and imposter syndrome—both things that will have us chasing our tails 36 hours per day if we let them.

    See also:

    ❝Burnout is the culture of our times. A culture that expects us to do more and think our way out of everything. A culture that asks for more than the body can bear. Unfortunately, even though the situation might not be of our creation, burnout culture is our inheritance.

    An inheritance we can either perpetuate—or change—depending on what we embody.❞

    Source: The Embodied MD on Burnout with Dr Claudine Holt

    That “embodiment” is partly our choices and actions that we bring and own just as we bring and own our body—and it’s partly our relationship with our body itself, and learning to love it, and work with it to achieve wonderful things, instead of just getting through the day.

    Which yes, does also mean making space for good diet, exercise, sleep and so forth, per:

    These Top Five Things Make The Biggest Difference To Health

    Want to know more?

    You might like to check out Dr. Holt’s website:

    The Embodied M.D. | Burnout Coach

    …where she also offers resources such as a blog and a podcast.

    Enjoy!

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  • Fully Present – by Dr. Susan Smalley and Diana Winston

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    “The Science and the Art of…” tends to be a bit of a fuzzy obfuscation, but in this case, it’s accurate, especially in this presentation. The authors are, indeed, a scientist and an artist—and both practitioners, meeting in the middle.

    As such, we get the clinical insights of a researcher and professor of psychiatry, and the grounded-yet-spiritual insights of an erstwhile Buddhist nun.

    While the book is pop psychology in essence, the format is much more that of a textbook than a self-help book. Will it be useful for helping yourself anyway, though? Yes, absolutely, if you apply the information contained within.

    Don’t be fooled into thinking that a textbook format makes it dry, though—the writing is very compelling, and you’ll find yourself turning pages eagerly. There’s no time like the present, after all!

    Bottom line: if you find the scientific evidence-base for the usefulness of mindfulness appealing, but find a lot of guides a little fluffy, this one is perfectly balanced—and very well written, too.

    Click here to check out Fully Present, bring yourself into the moment, always!

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  • How To Stay A Step Ahead Of Peripheral Artery Disease

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    Far less well-known than Coronary Artery Disease, it can still result in loss of life and limb (not in that order). Fortunately, there are ways to be on your guard:

    What it is

    Peripheral Artery Disease (PAD) is the same thing as Coronary Artery Disease (CAD), just, in the periphery—which by definition means “outside of the heart and brain”, but in practice, it starts with the extremities. And of the extremities, it tends to start with the feet and legs, for the simple reason that if someone’s circulation is sluggish, then because of gravity, that’s where’s going to get blocked first.

    In both CAD and PAD, the usual root cause is atherosclerosis, that is to say, the build-up of fatty material inside the arteries, usually commensurate to LDL (“bad”) cholesterol, especially in men (high LDL is still a predictor of cardiovascular disease in women though, just more modestly so, at least pre-menopause or in cases of treated menopause whereby HRT has returned hormones to pre-menopause levels).

    See also: Demystifying Cholesterol

    And for that about sex differences: His & Hers: The Hidden Complexities of Statins and Cardiovascular Disease (CVD)

    Why it is

    This one’s straightforward, as it’s the same things as any kind of cardiovascular disease: high blood pressure, high cholesterol, older age, obesity, smoking, drinking, diabetes, and genetic factors (so, a risk factor is: family history of heart disease).

    However, while those are the main causes and/or risk factors, it absolutely can still strike other people, so it’s as well to be watch out for…

    What to look out for

    Many people first notice signs and symptoms that turn out to be PAD when they experience pain or numbness in the foot or feet, and/or a discoloration of the feet (especially toes), and slow wound healing.

    At that stage, chances are you will need to go urgently to a specialist, and surgery is a likely necessity. With a little luck, it’ll be a minimally-invasive surgery to unblock an artery; failing that, an amputation will be in order.

    At that stage, under 50% will be alive 5 years from diagnosis:

    Cardiovascular and all-cause mortality in patients with intermittent claudication and critical limb ischaemia

    You probably want to avoid those. Good news is, you can, by catching it earlier!

    What to look out for before that

    The most common test for PAD is one you can do at home, but enlisting a nurse to do it for you will help ensure accurate readings. It’s called the Ankle-Brachial Index (ABI) test, and it involves comparing the blood pressure in your ankle with the blood pressure in your arm, and expressing them as a ratio.

    Here’s how to do it (instructions and a video demonstration if you want it):

    Do Try This At Home: ABI Test For Clogged Arteries

    If you need a blood pressure monitor, by the way, here’s an example product on Amazon.

    • A healthy ABI score is between 1.0 and 1.4; anything outside this range may indicate arterial problems.
    • Low ABI scores (below 0.8) suggest plaque is likely obstructing blood flow
    • High ABI scores (above 1.4) may indicate artery hardening

    Do note also that yes, if you have plaque obstructing blood flow and hardened arteries, your scores may cancel out and give you a “healthy” score, despite your arteries being very much not healthy.

    For this reason, this test can be used to raise the alarm, but not to give the “all clear”.

    There are other tests that clinicians can do for you, but you can’t do at home unless you have an MRI machine, a CT scanner, an x-ray machine, a doppler-and-ultrasound machine, etc. We’ll not go into those in detail here, but ask your doctor about them if you’re concerned.

    What to do about it

    In the mid-to-late stages of the disease, the options are medication and surgery, respectively, but your doctor will advise about those in that eventuality.

    In the early stages of the disease, the first-line recommend treatment is exercise, of which, especially walking:

    Lower Extremity Peripheral Artery Disease: Diagnosis and Treatment

    Given that this more often happens when someone hasn’t been walking so much, it can be a walk-rest-walk approach at first (a treadmill on a low setting can be very useful for this):

    See also: Exercise Comparison Head-to-Head: Treadmill vs Road

    Take care!

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Related Posts

  • What’s the difference between autism and Asperger’s disorder?
  • Frozen/Thawed/Refrozen Meat: How Much Is Safety, And How Much Is Taste?

    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.

    What You Can (And Can’t) Safely Do With Frozen Meat

    Yesterday, we asked you:

    ❝You have meat in the freezer. How long is it really safe to keep it?❞

    …and got a range of answers, mostly indicating to a) follow the instructions (a very safe general policy) and b) do not refreeze if thawed because that would be unsafe. Fewer respondents indicated that meat could be kept for much longer than guidelines say, or conversely, that it should only be kept for weeks or less.

    So, what does the science say?

    Meat can be kept indefinitely (for all intents and purposes) in a freezer; it just might get tougher: True or False?

    False, assuming we are talking about a normal household electrical freezer that bottoms out at about -18℃ / 0℉.

    Fun fact: cryobiologists cryopreserve tissue samples (so basically, meat) at -196℃ / -320℉, and down at those temperatures, the tissues will last a lot longer than you will (and, for all practical purposes: indefinitely). There are other complications with doing so (such as getting the sample through the glass transition point without cracking it during the vitrification process) but those are beyond the scope of this article.

    If you remember back to your physics or perhaps chemistry classes at school, you’ll know that molecules move more quickly at higher temperatures, and more slowly at lower ones, only approaching true stillness as they near absolute zero (-273℃ / -459℉ / 0K ← we’re not saying it’s ok, although it is; rather, that is zero kelvin; no degree sign is used with kelvins)

    That means that when food is frozen, the internal processes aren’t truly paused; it’s just slowed to a point of near imperceptibility.

    So, all the way up at the relatively warm temperatures of a household freezer, a lot of processes are still going on.

    What this means in practical terms: those guidelines saying “keep in the freezer for up to 4 months”, “keep in the freezer for up to 9 months”, “keep in the freezer for up to 12 months” etc are being honest with you.

    More or less, anyway! They’ll usually underestimate a little to be on the safe side—but so should you.

    Bad things start happening within weeks at most: True or False?

    False, for all practical purposes. Again, assuming a normal and properly-working household freezer as described above.

    (True, technically but misleadingly: the bad things never stopped; they just slowed down to a near imperceptible pace—again, as described above)

    By “bad” here we should clarify we mean “dangerous”. One subscriber wrote:

    ❝Meat starts losing color and flavor after being in the freezer for too long. I keep meat in the freezer for about 2 months at the most❞

    …and as a matter of taste, that’s fair enough!

    It is unsafe to refreeze meat that has been thawed: True or False?

    False! Assuming it has otherwise been kept chilled, just the same as for fresh meat.

    Food poisoning comes from bacteria, and there is nothing about the meat previously having been frozen that will make it now have more bacteria.

    That means, for example…

    • if it was thawed (but chilled) for a period of time, treat it like you would any other meat that has been chilled for that period of time (so probably: use it or freeze it, unless it’s been more than a few days)
    • if it was thawed (and at room temperature) for a period of time, treat it like you would any other meat that has been at room temperature for that period of time (so probably: throw it out, unless the period of time is very small indeed)

    The USDA gives for 2 hours max at room temperature before considering it unsalvageable, by the way.

    However! Whenever you freeze meat (or almost anything with cells, really), ice crystals will form in and between cells. How much ice crystallization occurs depends on several variables, with how much water there is present in the food is usually the biggest factor (remember that animal cells are—just like us—mostly water).

    Those ice crystals will damage the cell walls, causing the food to lose structural integrity. When you thaw it out, the ice crystals will disappear but the damage will be left behind (this is what “freezer burn” is).

    So if your food seems a little “squishy” after having been frozen and thawed, that’s why. It’s not rotten; it’s just been stabbed countless times on a microscopic level.

    The more times you freeze and thaw and refreeze food, the more this will happen. Your food will degrade in structural integrity each time, but the safety of it won’t have changed meaningfully.

    Want to know more?

    Further reading:

    You can thaw and refreeze meat: five food safety myths busted

    Take care!

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  • Vaping: A Lot Of Hot Air?

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    Vaping: A Lot Of Hot Air?

    Yesterday, we asked you for your (health-related) opinions on vaping, and got the above-depicted, below-described, set of responses:

    • A little over a third of respondents said it’s actually more dangerous than smoking
    • A little under a third of respondents said it’s no better nor worse, just different
    • A little over 10% of respondents said it’s marginally less harmful, but still very bad
    • A little over 10% of respondents said it’s a much healthier alternative to smoking

    So what does the science say?

    Vaping is basically just steam inhalation, plus the active ingredient of your choice (e.g. nicotine, CBD, THC, etc): True or False?

    False! There really are a lot of other chemicals in there.

    And “chemicals” per se does not necessarily mean evil green glowing substances that a comicbook villain would market, but there are some unpleasantries in there too:

    So, the substrate itself can cause irritation, and flavorings (with cinnamaldehyde, the cinnamon flavoring, being one of the worst) can really mess with our body’s inflammatory and oxidative responses.

    Vaping can cause “popcorn lung”: True or False?

    True and False! Popcorn lung is so-called after it came to attention when workers at a popcorn factory came down with it, due to exposure to diacetyl, a chemical used there.

    That chemical was at that time also found in most vapes, but has since been banned in many places, including the US, Canada, the EU and the UK.

    Vaping is just as bad as smoking: True or False?

    False, per se. In fact, it’s recommended as a means of quitting smoking, by the UK’s famously thrifty NHS, that absolutely does not want people to be sick because that costs money:

    NHS | Vaping To Quit Smoking

    Of course, the active ingredients (e.g. nicotine, in the assumed case above) will still be the same, mg for mg, as they are for smoking.

    Vaping is causing a health crisis amongst “kids nowadays”: True or False?

    True—it just happens to be less serious on a case-by-case basis to the risks of smoking.

    However, it is worth noting that the perceived harmlessness of vapes is surely a contributing factor in their widespread use amongst young people—decades after actual smoking (thankfully) went out of fashion.

    On the other hand, there’s a flipside to this:

    Flavored vape restrictions lead to higher cigarette sales

    So, it may indeed be the case of “the lesser of two evils”.

    Want to know more?

    For a more in-depth science-ful exploration than we have room for here…

    BMJ | Impact of vaping on respiratory health

    Take care!

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  • Beetroot For More Than Just Your Blood Pressure

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    Beetroot is well-known for being good for blood pressure, but what else can it do?

    Firstly, blood pressure, yes

    This is because… Well, we’ll quote from a paper:

    ❝As a source of nitrate, beetroot ingestion provides a natural means of increasing in vivo nitric oxide (NO) availability and has emerged as a potential strategy to prevent and manage pathologies associated with diminished NO bioavailability, notably hypertension and endothelial function❞

    Source: The Potential Benefits of Red Beetroot Supplementation in Health and Disease

    That’s a little modest in its wording though, so let’s just be clear, it does work:

    …where you can see that it significantly reduced systolic and diastolic blood pressure.

    Note: this does mean that if you suffer conversely from hypotension (dangerously low blood pressure) you should probably skip the beetroot.

    For your blood sugar levels, too

    The fiber in whole beetroot or powdered beetroot extract (but not beetroot juice) is, as usual, good for balancing blood sugars. However, in the case of beetroot, it (probably because of the betalain content, specifically betanin) also improves insulin sensitivity, resulting in lower fasting and postprandial (after-dinner) insulin levels:

    Evaluation of 12-Week Standardized Beetroot Extract Supplementation in Older Participants: A Preliminary Study of Human Health Safety

    See also (cited in the above paper): Post-prandial effect of beetroot (beta vulgaris) juice on glucose and lipids levels of apparently healthy subjects

    For your blood lipids, also

    This one has less readily available research to support it, so in the category of “papers that aren’t paywalled into oblivion”, here’s one that concludes with the entertainingly specific:

    Results: Beetroot juice intake increased plasma high density lipoprotein (t= -60.88, P<0.05). Triglyceride, total cholesterol, and low density lipoprotein were reduced (P<0.05). Compared with placebo, beetroot juice reduced the concentrations of triglyceride, total cholesterol, and low density lipoprotein (P<0.05).

    Conclusion: Regular beetroot juice intake has significant effects on lipid profile in female soccer players, hence its suggestion for preventing diseases such as hypercholesterolemia and hypertension in female soccer players.❞

    However, even if you are not a female soccer player, chances are it will have the same effect on your physiology as theirs (but, credit where it’s due, it’s right that they make claims about only what they know for sure).

    Here’s the paper: Efficacy of Beetroot Juice Consumption on the Lipid Profile of Female Soccer Players

    What’s good for your blood, is good for your brain

    …and that’s just as true here:

    Exploring beetroot (Beta vulgaris L.) for diabetes mellitus and Alzheimer’s disease dual therapy: in vitro and computational studies

    When reading that, you’ll see that as well as two health outcome benefits (antidiabetic and anti-Alzheimer’s), there are also two mechanisms of action, which are:

    • The blood sugar lowering, insulin sensitivity increasing, lipid improving, qualities we discussed already
    • Its fabulous flavonoid content

    These two things each in turn have a lot of other components and nuances, so here’s an infographic covering them ← this flowchart makes it all a lot clearer

    On which note, those flavonoids aren’t the only active compounds present that result in…

    Antioxidant & anti-inflammatory action

    This one’s pretty straightforward, but it’s worth mentioning also that (as is commonly the case) what fights oxidation also fights cancer:

    ❝In recent years, the beetroot, especially the betalains (betanin) and nitrates it contains, now has received increasing attention for their effective biological activity.

    Betalains have been proven to eliminate oxidative and nitrative stress by scavenging DPPH, preventing DNA damage, and reducing LDL.

    It also has been found to exert antitumor activity by inhibiting cell proliferation, angiogenesis, inducing cell apoptosis, and autophagy.❞

    Read in full: Beetroot as a functional food with huge health benefits: Antioxidant, antitumor, physical function, and chronic metabolomics activity

    Want to try some?

    We don’t sell it, but you can easily grow your own or find it at your local supermarket; if you prefer it in supplement form, dried is better than juice (for a multitude of reasons), so here for your convenience is an example product on Amazon 😎

    Enjoy!

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