The BAT-pause!

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.

When Cold Weather & The Menopause Battle It Out

You may know that (moderate, safe) exposure to the cold allows our body to convert our white and yellow fat into the much healthier brown fat—also called brown adipose tissue, or “BAT” to its friends.

If you didn’t already know that, then well, neither did scientists until about 15 years ago:

The Changed Metabolic World with Human Brown Adipose Tissue: Therapeutic Visions

You can read more about it here:

Cool Temperature Alters Human Fat and Metabolism

This is important, especially because the white fat that gets converted is the kind that makes up most visceral fat—the kind most associated with all-cause mortality:

Visceral Belly Fat & How To Lose It ← this is not the same as your subcutaneous fat, the kind that sits directly under your skin and keeps you warm; this is the fat that goes between your organs and of which we should only have a small amount!

The BAT-pause

It’s been known (since before the above discovery) that BAT production slows considerably as we get older. Not too shocking—after all, many metabolic functions slow as we get older, so why should fat regulation be any different?

But! Rodent studies found that this was tied less to age, but to ovarian function: rats who underwent ovariectomies suffered reduced BAT production, regardless of their age.

Naturally, it’s been difficult to recreate such studies in humans, because it’s difficult to find a large sample of young adults willing to have their ovaries whipped out (or even suppressed chemically) to see how badly their metabolism suffers as a result.

Nor can an observational study (for example, of people who incidentally have ovaries removed due to ovarian cancer) usefully be undertaken, because then the cancer itself and any additional cancer treatments would be confounding factors.

Perimenopausal study to the rescue!

A recent (published last month, at time of writing!) study looked at women around the age of menopause, but specifically in cohorts before and after, measuring BAT metabolism.

By dividing the participants into groups based on age and menopausal status, and dividing the post-menopausal group into “takes HRT” and “no HRT” groups, and dividing the pre-menopausal group into “normal ovarian function” and “ovarian production of estrogen suppressed to mimic slightly early menopause” groups (there’s a drug for that), and then having groups exposed to warm and cold temperatures, and measuring BAT metabolism in all cases, they were able to find…

It is about estrogen, not age!

You can read more about the study here:

“Good” fat metabolism changes tied to estrogen loss, not necessarily to aging, shows study

…and the study itself, here:

Brown adipose tissue metabolism in women is dependent on ovarian status

What does this mean for men?

This means nothing directly for (cis) men, sorry.

But to satisfy your likely curiosity: yes, testosterone does at least moderately suppress BAT metabolism—based on rodent studies, anyway, because again it’s difficult to find enough human volunteers willing to have their testicles removed for science (without there being other confounding variables in play, anyway):

Testosterone reduces metabolic brown fat activity in male mice

So, that’s bad per se, but there isn’t much to be done about it, since the rest of your (addressing our male readers here) metabolism runs on testosterone, as do many of your bodily functions, and you would suffer many unwanted effects without it.

However, as men do typically have notably less body fat in general than women (this is regulated by hormones), the effects of changes in BAT metabolism are rather less pronounced in men (per testosterone level changes) than in women (per estrogen level changes), because there’s less overall fat to convert.

In summary…

While menopausal HRT is not necessarily a silver bullet to all metabolic problems, its BAT-maintaining ability is certainly one more thing in its favor.

See also:

Dr. Jen Gunter | What You Should Have Been Told About The Menopause Beforehand

Take care!

Don’t Forget…

Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!

Recommended

  • What is silicosis and what does research say about it?
  • Pistachios vs Brazil Nuts – Which is Healthier?
    In the nut face-off, pistachios outperform Brazil nuts in protein, vitamins, and fiber, but watch out for Brazil nuts’ selenium overload. Pistachios take the crown!

Learn to Age Gracefully

Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:

  • Undoing The Damage Of Life’s Hard Knocks

    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.

    Sometimes, What Doesn’t Kill Us Makes Us Insecure

    We’ve written before about Complex PTSD, which is much more common than the more popularly understood kind:

    PTSD, But, Well…. Complex.

    Given that C-PTSD affects so many people (around 1 in 5, but really, do read the article above! It explains it better than we have room to repeat today), it seems like a good idea to share tips for managing it.

    (Last time, we took all the space for explaining it, so we just linked to some external resources at the end)

    What happened to you?

    PTSD has (as a necessity, as part of its diagnostic criteria) a clear event that caused it, which makes the above question easy to answer.

    C-PTSD often takes more examination to figure out what tapestry of circumstances (and likely but not necessarily: treatment by other people) caused it.

    Often it will feel like “but it can’t be that; that’s not that bad”, or “everyone has things like that” (in which case, you’re probably one of the one in five).

    The deeper questions

    Start by asking yourself: what are you most afraid of, and why? What are you most ashamed of? What do you fear that other people might say about you?

    Often there is a core pattern of insecurity that can be summed up in a simple, harmful, I-message, e.g:

    • I am a bad person
    • I am unloveable
    • I am a fake
    • I am easy to hurt
    • I cannot keep my loved ones safe

    …and so forth.

    For a bigger list of common insecurities to see what resonates, check out:

    Basic Fears/Insecurities, And Their Corresponding Needs/Desires

    Find where they came from

    You probably learned bad beliefs, and consequently bad coping strategies, because of bad circumstances, and/or bad advice.

    • When a parent exclaimed in anger about how stupid you are
    • When a partner exclaimed in frustration that always mess everything up
    • When an employer told you you weren’t good enough

    …or maybe they told you one thing, and showed you the opposite. Or maybe it was entirely non-verbal circumstances:

    • When you gambled on a good idea and lost everything
    • When you tried so hard at some important endeavour and failed
    • When you thought someone could be trusted, and learned the hard way that you were wrong

    These are “life’s difficult bits”, but when we’ve lived through a whole stack of them, it’s less like a single shattering hammer-blow of PTSD, and more like the consistent non-stop tap tap tap that ends up doing just as much damage in the long run.

    Resolve them

    That may sound a bit like a “and quickly create world peace” level of task, but we have tools:

    Ask yourself: what if…

    …it had been different? Take some time and indulge in a full-blown fantasy of a life that was better. Explore it. How would those different life lessons, different messages, have impacted who you are, your personality, your behaviour?

    This is useful, because the brain is famously bad at telling real memories from false ones. Consciously, you’ll know that one was an exploratory fantasy, but to your brain, it’s still doing the appropriate rewiring. So, little by little, neuroplasticity will do its thing.

    Tell yourself a better lie

    We borrowed this one from the title of a very good book which we’ve reviewed previously.

    This idea is not about self-delusion, but rather that we already express our own experiences as a sort of narrative, and that narrative tends to contain value judgements that are often not useful, e.g. “I am stupid”, “I am useless”, and all the other insecurities we mentioned earlier. Some simple examples might be:

    • “I had a terrible childhood” → “I have come so far”
    • “I should have known better” → “I am wiser now”
    • “I have lost so much” → “I have experienced so much”

    So, replacing that self-talk can go a long way to re-writing how secure we feel, and therefore how much trauma-response (ideally: none!) we have to stimuli that are not really as threatening as we sometimes feel they are (a hallmark of PTSD in general).

    Here’s a guide to more ways:

    How To Get Your Brain On A More Positive Track (Without Toxic Positivity)

    Take care!

    Share This Post

  • Is It Possible To Lose Weight Quickly?

    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.

    In Victorian England, weight-loss trends like the dangerous tapeworm diet were popular. While modern fad diets can seem less extreme, they often promise similarly fast results. However, these quick fixes can have similarly harmful consequences:

    Not so fast

    To illustrate the difference between gradual and extreme dieting, the video bids us consider two identical twins, Sam and Felix:

    • Sam adopts a gradual approach, slowly reducing calorie intake and exercising regularly. This causes his body to burn glycogen stores before transitioning to fat as an energy source. Regular exercise helps Sam maintain muscle mass, which boosts his metabolism and supports sustained weight loss.
    • Felix drastically cuts calories, forcing his body into starvation mode. He quickly depletes glycogen stores, loses muscle mass, and burns fewer calories, making long-term weight loss more difficult. Although Felix might initially lose water weight, this is temporary and unsustainable.


    You cannot “just lose it quickly now, and then worry about healthiness once the weight’s gone”, because you will lose health much more quickly than you will lose fat, and that will sabotage, rather than help, your fat loss journey.

    Healthy weight loss requires gradual, balanced changes in diet and exercise tailored to individual needs. Extreme diets, whether through calorie restriction or things like elimination of carbs or fats, are unsustainable and shock the body. It’s important to prioritize long-term health over societal pressures for quick weight loss and focus on developing a sustainable, healthy lifestyle.

    In short, the quickest way to lose weight and keep it off (without dying), is to lose it slowly.

    For more on all of this, enjoy:

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

    Want to learn more?

    You might also like to read:

    How To Lose Weight (Healthily)

    Take care!

    Share This Post

  • Dates vs Raisins – Which is Healthier?

    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.

    Our Verdict

    When comparing dates to raisins, we picked the dates.

    Why?

    There are benefits for each fruit, but we say dates come out on top. See what you think:

    In terms of macros, while they’re both dried fruits, dates contain more water (unless you leave them sitting open for a while), which will tend to mathematically lower the relative percentages of other components because they’re being held against water weight too. However, even though this is the case (i.e. dates are being mathematically disadvantaged), dates contain more than twice the fiber that raisins do (8g/100g compared to raisins’ 3.7g/100g).

    While we’re talking macros, dates are also lower in total carbs, as well as obviously net carbs, and have a much lower glycemic index than raisins (dates have a glycemic index of 42, considered low, while raisins have a glycemic index of 64, considered medium; their respective glycemic loads are even more telling: 13 for raisins and just 2 for dates!).

    About those carbs… For dates, it’s an approximately equal mix of sucrose, glucose, and fructose, while for raisins it’s 49% glucose and 49% fructose. Because sucrose is the only disaccharide here, this (as well as the fiber difference) is one of the reasons for the different glycemic indices and glycemic loads, since glucose and fructose are more quickly absorbed.

    That’s more than we usually write about macros, but in this case, both fruits are ones especially often hit with the “aren’t they full of sugar though?” question, so it was important to cover the critical distinctions between the two, because they really are very different.

    Summary of macros: dates win easily in every aspect we looked at

    In the category of vitamins, raisins get a tally in their favor. Raisins are higher in vitamins B1, B2, C, E, K, and choline, while dates are higher in vitamins A, B3, B5, and B9, giving raisins a 6:4 lead here. In dates’ defense, the difference in vitamin K is marginal, and it’d make it a 5:4 lead if we considered that within the margin of error (because all these figures are of course based on averages), and the vitamins that dates are higher in, the margins are much wider indeed, meaning that both fruits have approximately the same overall levels of vitamins when looked at in total, but still, we’ll call this category a nominal win for raisins.

    When it comes to minerals, dates have more magnesium, selenium, and zinc, while raisins have more copper, iron, phosphorus, and potassium. Nominally that’s a 4:3 lead for raisins, but if we consider that raisins also contain more sodium, it’s more like a tie here. If we have to pick one though, this is a very slight win for raisins.

    Adding up the sections, we have one huge win for dates (macros) with two very marginal wins for raisins—hence, we say that dates win out.

    Still, of course enjoy both; diversity is good for the health.

    Want to learn more?

    You might like to read:

    Which Sugars Are Healthier, And Which Are Just The Same?

    Take care!

    Share This Post

Related Posts

  • What is silicosis and what does research say about it?
  • Love Sense – by Dr. Sue Johnson

    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.

    Let’s quickly fact-check the subtitle:

    • Is it revolutionary? It has a small element of controversy, but mostly no
    • Is it new? No, it is based on science from the 70s that was expanded in the 80s and 90s and has been, at most, tweaked a little since.
    • Is it science? Yes! It is so much science. This book comes with about a thousand references to scientific studies.

    What’s the controversy, you ask? Dr. Johnson asserts, based on our (as a species) oxytocin responsiveness, that we are biologically hardwired for monogamy. This is in contrast to the prevailing scientific consensus that we are not.

    Aside from that, though, the book is everything you could expect from an expert on attachment theory with more than 35 years of peer-reviewed clinical research, often specifically for Emotionally Focused Therapy (EFT), which is her thing.

    The writing style is similar to that of her famous “Hold Me Tight: Seven Conversations For A Lifetime Of Love”, a very good book that we reviewed previously. It can be a little repetitive at times in its ideas, but this is largely because she revisits some of the same questions from many angles, with appropriate research to back up her advice.

    Bottom line: if you are the sort of person who cares to keep working to improve your romantic relationship (no matter whether it is bad or acceptable or great right now), this book will arm you with a lot of deep science that can be applied reliably with good effect.

    Click here to check out Love Sense, and level-up yours!

    Don’t Forget…

    Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!

    Learn to Age Gracefully

    Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:

  • High-Protein Plant-Based Diet for Beginners – by Maya Howard with Ariel Warren

    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.

    Seasoned vegans (well-seasoned vegans?) will know that getting enough protein from a plant-based diet is really not the challenge that many think it is, but for those just embarking on cutting out the meat, it’s not useful to say “it’s easy!”; it’s useful to show how.

    That’s what this book does. And not just by saying “these foods” and leaving people to wonder if they need to eat a pound of tofu each day to get their protein in. Instead, recipes. Enough for a 4-week meal plan, and the idea is that after a month of eating that way, it won’t be nearly so mysterious.

    The recipes are very easy to execute, while still having plenty of flavor (which is what happens when one uses a lot of flavorsome main ingredients and then seasons them well too). The ingredients are not obscure, and you should be able to find everything easily in any medium-sized supermarket.

    As for the well-roundedness of the diet, we’ll mention that the “with Ariel Warren” in the by-line means that while the book was principally authored by Maya Howard (who is, at time of writing, a nutritionist-in-training), she had input throughout from Ariel Warren (a Registered Dietician Nutritionist) to ensure she didn’t go off-piste anyway and it gets the professional stamp of approval.

    Bottom line: if you’d like to cook plant based while still prioritizing protein and you’re not sure how to make that exciting and fun instead of a chore, then this book will show you how to please your taste buds and improve your body composition at the same time.

    Click here to check out High-Protein Plant-Based Diet for Beginners, and dig in!

    Don’t Forget…

    Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!

    Learn to Age Gracefully

    Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:

  • You Are the One You’ve Been Waiting For – by Dr. Richard Schwartz

    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.

    As self-therapy approaches go, the title here could be read two ways: as pop-psychology fluff, or a suggestion of something deeper. And, while written in a way to make it accessible to all, we’re happy to report the content consists of serious therapeutic ideas, presented clearly.

    Internal Family Systems (IFS) is a large, internationally recognized, and popular therapeutic approach. It’s also an approach that lends itself quite well to self-therapy, as this book illustrates.

    Dr. Schwartz kicks off by explaining not IFS, but the problem that it solves… We (most of us, anyway) have over the course of our lives tried to plug the gaps in our own unmet psychological needs. And, that can cause resentment, strain, and can even be taken out on others if we’re not careful.

    The real meat of the book, however, is in its illustrative explanations of how IFS works, and can be applied by an individual. The goal is to recognize all the parts that make us who we are, understand what they need in order to be at peace, and give them that. Spoiler: most what they will need is just being adequately heard, rather than locked in a box untended.

    One of the benefits of using this book for self-therapy, of course, is that it requires a lot less vulnerability with a third party.

    But, speaking of which, what of these intimate relationships the subtitle of the book referenced? Mostly the benefits to such come from a “put your own oxygen mask on first” angle… but the book does also cover discussions between intimate partners, and approaches to love, including what the author calls “courageous love”.

    Bottom line: this is a great book if you want to do some “spring-cleaning of the soul” and live a little more lightly as a result.

    Click here to check out “You Are The One You’ve Been Waiting For” on Amazon today, and try out IFS for yourself!

    Don’t Forget…

    Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!

    Learn to Age Gracefully

    Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails: