Awakening Your Ikigai – by Dr. Ken Mogi

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It’s been well-established in supercentenarian studies that one of the key factors beyond diet or exercise or suchlike (important as those things definitely are), is having a purpose to one’s life.

Neuroscientist Dr. Ken Mogi explains in this very easy-to-read book, how we can bring ikigai into our lives.

From noticing the details of the small things in life, to reorienting one’s life around what’s most truly most important to us, Dr. Mogi gives us not just a “this is ikigai” exposé, but rather, a practical and readily applicable how-to guide.

Bottom line: if you’ve so far been putting off ikigai as “I’ll get to that”, the time to start is today.

Click here to check out Awakening Your Ikigai, and actually awaken yours!

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  • Carbonated Water: For Weight Loss, Satiety, Or Just Gas?

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    There are two main mechanisms of action by which sparkling water is considered to help satiety and/or weight loss; they are:

    1. It “fills us up” such that we feel fuller sooner, and thus eat less, and thus (all other things being equal) perhaps lose weight
    2. The carbon dioxide is absorbed into the bloodstream, where (as a matter of chemistry) it improves glucose metabolism, thus lowering blood sugars and indirectly leading (potentially) to weight loss, but even if not, lowered blood sugars are good for most people most of the time, right?

    However, there are just a few problems:

    Full of gas?

    Many people self-report enjoying sparkling water as a way to feel fuller while fasting (or even while eating). However, the plural of “anecdote” is not “data”, so, here be data… Ish:

    ❝In order to determine whether such satiating effects occur through oral carbonic stimulation alone, we conducted modified sham-feeding (SF) tests (carbonated water ingestion (CW), water ingestion (W), carbonated water sham-feeding (CW-SF), and water sham-feeding (W-SF)), employing an equivalent volume and standardized temperature of carbonated and plain water, in a randomized crossover design.

    Thirteen young women began fasting at 10 p.m. on the previous night and were loaded with each sample (15ºC, 250 mL) at 9 a.m. on separate days. Electrogastrography (EGG) recordings were obtained from 20 min before to 45 min after the loading to determine the power and frequency of the gastric myoelectrical activity. Appetite was assessed using visual analog scales. After ingestion, significantly increased fullness and decreased hunger ratings were observed in the CW group. After the load, transiently but significantly increased fullness as well as decreased hunger ratings were observed in the CW-SF group. The powers of normogastria (2-4 cpm) and tachygastria (4-9 cpm) showed significant increases in the CW and W groups, but not in the CW-SF and W-SF groups. The peak frequency of normogastria tended to shift toward a higher band in the CW group, whereas it shifted toward a lower band in the CW-SF group, indicating a different EGG rhythm.

    Our results suggest that CO2-induced oral stimulation is solely responsible for the feeling of satiety.❞

    ~ Dr. Maki Suzuki et al.

    Now, that’s self-reported, and a sample size of 13, so it’s not the most airtight science ever, but it is at least science. Here’s the paper, by the way:

    Oral Carbonation Attenuates Feeling of Hunger and Gastric Myoelectrical Activity in Young Women

    Here’s another small study with 8 people, which found that still and sparkling water had the exact same effect:

    Effect of carbonated water on gastric emptying and intragastric meal distribution

    However, drinking water (still or sparkling) with a meal will not have anywhere near the same effect for satiety as consuming food that has a high water-content.

    See also: Some Surprising Truths About Hunger And Satiety ← our main feature in which we examine the science of volumetrics, including a study that shows how water incorporated into a food (but not served with a food) decreases caloric intake.

    As an aside, one difference that carbonation can make is to increase ghrelin levels—that’s the hunger hormone (the satiety hormone is leptin, by the way). This one’s a rat study, but it seems reasonable that the same will be true of humans:

    Carbon dioxide in carbonated beverages induces ghrelin release and increased food consumption in male rats: implications on the onset of obesity

    …which is worth bearing in mind even if you yourself are not, in fact, a male rat.

    The glucose guzzler?

    This one has simply been the case of a study being misrepresented, for example here:

    Fizzy water might aid weight loss by providing a small boost to glucose uptake and metabolism

    The idea is that higher levels of carbon dioxide in the blood mean faster glucose metabolism, which is technically true. Now, often “technically true” is the best kind of true, but not here, because it’s simply not useful.

    In short, we produce so much carbon dioxide as part of our normal respiratory processes, that any carbon dioxide we might consume in a carbonated water is barely a blip in the graph.

    Oh, and that article we just linked? Even within the article, despite running with that headline, the actual scientists quoted are saying such things as:

    ❝While there is a hypothetical link between carbonated water and glucose metabolism, this has yet to be tested in well-designed human intervention studies❞

    ~ Professor Sumantra Ray

    Note: the word “hypothetical” means “one level lower than theoretical”. This is very far from being a conclusion.

    And the study itself? Wasn’t even about carbonated water, it was about kidney dialysis and how the carbon dioxide content can result in hypoglycemia:

    The mechanism of hypoglycemia caused by hemodialysis

    …which got referenced in this paper (not a study):

    Can carbonated water support weight loss?

    …and even that concluded:

    ❝CO2 in carbonated water may promote weight loss by enhancing glucose uptake and metabolism in red blood cells.

    However, the amount is so small that it is difficult to expect weight loss effects solely from the CO2 in carbonated water.

    Drinking carbonated water may also affect blood glucose measurements.❞

    Note: the word “may”, when used by a scientist and in the absence of any stronger claims, means “we haven’t ruled out the possibility”.

    What breaking news that is.

    Stop the press! No, really, stop it!

    So… What does work?

    There are various ways of going about actually hacking hunger (and they stack; i.e. you can use multiple methods and get cumulative results), and we wrote about them here:

    Hack Your Hunger

    Enjoy!

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  • The Worst Cookware Lurking In Your Kitchen (Toxicologist Explains)

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    Dr. Yvonne Burkart gives us a rundown of the worst offenders, and what to use instead:

    Hot mess

    The very worst offender is non-stick cookware, the kind with materials such as Teflon. These are the most toxic, due to PFAS chemicals.

    Non-stick pans release toxic gases, leach chemicals into food, and release microplastic particles, which can accumulate in the body.

    One that a lot of people don’t think about, in that category, is the humble air-fryer, which often as not has a non-stick cooking “basket”. These she describes as highly toxic, as they combine plastic, non-stick coatings, and high heat, which can release fumes and other potentially dangerous chemicals into the air and food.

    You may be wondering: how bad is it? And the answer is, quite bad. PFAS chemicals are linked to infertility, hypertension in pregnancy, developmental issues in children, cancer, weakened immune systems, hormonal disruption, obesity, and intestinal inflammation.

    Dr. Burkart’s top picks for doing better:

    1. Pure ceramic cookware: top choice for safety, particularly brands like Xtrema, which are tested for heavy metal leaching.
    2. Carbon steel & cast iron: durable and safe; can leach iron in acidic foods (for most people, this is a plus, but some may need to be aware of it)
    3. Stainless steel: lightweight and affordable but can leach nickel and chromium in acidic foods at high temperatures. Use only if nothing better is available.

    And specifically as alternatives to air-fryers: glass convection ovens or stainless steel ovens are safer than conventional air fryers. The old “combination oven” can often be a good choice here.

    For more on all of these, enjoy:

    Click Here If The Embedded Video Doesn’t Load Automatically!

    Want to learn more?

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    Take care!

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  • Pistachios vs Almonds – Which is Healthier?

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    Our Verdict

    When comparing pistachios to almonds, we picked the almonds.

    Why?

    It was very close! And those who’ve been following our “This or That” comparisons might be aware that pistachios and almonds have both been winning their respective comparisons with other nuts so far, so today we put them head-to-head.

    In terms of macros, almonds have a little more protein and a little more fiber—as well as slightly more fat, though the fats are healthy. Pistachios, meanwhile, are higher in carbs. A moderate win for almonds on the macro front.

    When it comes to vitamins, pistachios have more of vitamins A, B1, and B6, while almonds have more of vitamins B2, B3, and E. We could claim a slight victory for pistachios, based on the larger margins, or else a slight victory for almonds, based on vitamin E being a more common nutritional deficiency than vitamin A, and therefore the more useful vitamin to have more of. We’re going to call this category a tie.

    In the category of minerals, almonds lead with more calcium, magnesium, manganese, and zinc, while pistachios boast more copper, potassium, and selenium, though the margins are more modest for pistachios. A moderate win for almonds on minerals, therefore.

    Adding up the sections gives a win for almonds, but of course, do enjoy both, because both are excellent in their own right.

    Want to learn more?

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    Take care!

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Related Posts

  • Upgrade Your Life – by Pat Divilly
  • How To Clean Your Brain (Glymphatic Health Primer)

    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.

    That’s not a typo! The name “glymphatic system” was coined by the Danish neuroscientist Dr. Maiken Nedergaard, and is a nod to its use of glial cells to do a similar job to that of the peripheral lymphatic system—but this time, in the CNS. Today, we have Dr. Jin Sung to tell us more:

    Brainwashing (but not like that)

    The glymphatic system may sound like a boring job, but so does “sanitation worker” in a city—yet the city would grind to a messy halt very very quickly without them. Same goes for your brain.

    Diseases that are prevalent when this doesn’t happen the way it should include Alzheimer’s (beta-amyloid clearance) and Parkinson’s (alpha-synuclein clearance) amongst others.

    Things Dr. Sung recommends for optimal glymphatic function include: sleep (7–9 hours), exercise (30–45 minutes daily), hydration (half your bodyweight in pounds, in ounces, so if your body weighs 150 lbs, that means 75 oz of water), good posture (including the use of good ergonomics, e.g. computer monitor at right height, car seat correct, etc), stress reduction (reduces inflammatory cytokines), getting enough omega-3 (the brain needs certain fats to work properly, and this is the one most likely to see a deficit), vagal stimulation (methods include humming, gargling, and gagging—please note we said vagal stimulation; easy to misread at a glance!), LED light therapy, and fasting (intermittent or prolonged).

    For more on each of these, including specific tips, enjoy:

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    Take care!

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  • The End of Old Age – by Dr. Marc Agronin

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    First, what this book is not: a book about ending aging. For that, you would want to check out “Ending Aging”, by Dr. Aubrey de Grey.

    What this book actually is: a book about the purpose of aging. As in: “aging: to what end?”, and then the book answers that question.

    Rather than viewing aging as solely a source of decline, this book (while not shying away from that) resolutely examines the benefits of old age—from clinically defining wisdom, to exploring the many neurological trade-offs (e.g., “we lose this thing but we get this other thing in the process”), and the assorted ways in which changes in our brain change our role in society, without relegating us to uselessness—far from it!

    The style of the book is deep and meaningful prose throughout. Notwithstanding the author’s academic credentials and professional background in geriatric psychiatry, there’s no hard science here, just comprehensible explanations of psychiatry built into discussions that are often quite philosophical in nature (indeed, the author additionally has a degree in psychology and philosophy, and it shows).

    Bottom line: if you’d like your own aging to be something you understand better and can actively work with rather than just having it happen to you, then this is an excellent book for you.

    Click here to check out The End Of Old Age, and live it!

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  • Trout vs Carp – Which is Healthier?

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    Our Verdict

    When comparing trout to carp, we picked the trout.

    Why?

    Both have their strong points!

    In terms of macros, trout has slightly more protein and fat, and/but also has less cholesterol than carp. So, we pick the trout in the macros category.

    In the category of vitamins, trout has much more of vitamins A, B1, B2, B3, B5, B6, B7, B12, C, D, E, K, and choline, while carp has slightly more vitamin B9. In other words, an easy win for trout here.

    When it comes to minerals, however, trout has more potassium and selenium, while carp has more calcium, copper, iron, magnesium, manganese, phosphorus, and zinc. A fair win for carp this time.

    You may be wondering about heavy metals: this will vary depending on location, as well as the age of the fish (younger fish have had less time to accumulate heavy metals than old ones, so if you’re visiting the fishmonger, choose the smaller ones) and the lives they have led (e.g. wild vs farmed), however, as a general rule of thumb, trout will generally have lower heavy metals levels than carp, all other things (e.g. location, age, etc) being equal.

    In short, enjoy either or both in moderation, but trout wins on 3/4 categories today.

    Want to learn more?

    You might like to read:

    Farmed Fish vs Wild Caught: Antibiotics, Mercury, & More

    Take care!

    Don’t Forget…

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