The Fruit That Can Specifically Reduce Belly Fat

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Gambooge: Game-Changer Or Gamble?

The gambooge, also called the gummi-gutta, whence its botanical name Garcinia gummi-gutta (formerly Gardinia cambogia), is also known as the Malabar tamarind, and it even got an English name, the brindle berry.

It’s a fruit that looks like a small pale yellow pumpkin in shape, but it grows on trees and has a taste so sour, that it’s usually used only in cooking, and not eaten raw which makes this writer really want to try it raw now.

Its active phytochemical compound hydroxycitric acid (HCA) rose to popularity as a supplement in the US based on a paid recommendation from Dr. Oz, and then became a controversy as supplements associated with it, were in turn associated with hepatotoxicity (more on this in the “Is it safe?” section below).

What do people use it for?

Simply put: it’s a weight loss supplement.

Less simply put: least interestingly, it’s a mild appetite suppressant:

Safety and mechanism of appetite suppression by a novel hydroxycitric acid extract (HCA-SX) ← this talks more about the biochemistry, but isn’t a human study. Human studies have been small and with mixed results. It seems likely that (as in the rat studies discussed above) the mechanism of action is largely about increasing serotonin, which itself is a well-established appetite suppressant. Therefore, the results will depend somewhat on a person’s brain’s serotonergic system.

We’ll revisit that later, but first let’s look at…

Even less simply put: its other mechanism of action is much more interesting; it actually blocks the production of fat (especially: visceral fat) in the body, by inhibiting citrate lyase, which enzyme plays a significant role in fat production:

Effects of (−)-hydroxycitrate on net fat synthesis as de novo lipogenesis

More illustratively, here’s another study, which found:

❝G cambogia reduced abdominal fat accumulation in subjects, regardless of sex, who had the visceral fat accumulation type of obesity. No rebound effect was observed.

It is therefore expected that G cambogia may be useful for the prevention and reduction of accumulation of visceral fat. ❞

~ Dr. Norihiro Shigematsu et al.

Read in full: Effects of garcinia cambogia (Hydroxycitric Acid) on visceral fat accumulation: a double-blind, randomized, placebo-controlled trial

As to why this is particularly important, and far more important than mere fat loss in general, see our previous main feature:

Visceral Belly Fat (And How To Lose It)

Is it safe?

It has shown a good safety profile up to large doses (2.8g/day):

Evaluation of the safety and efficacy of hydroxycitric acid or Garcinia cambogia extracts in humans

There have been some fears about hepatotoxicity, but they appear to be unfounded, and based on products that did not, in fact, contain HCA (and were merely sold by a company that used a similar name in their marketing):

No evidence demonstrating hepatotoxicity associated with hydroxycitric acid

However, as it has a serotoninergic effect, it could cause problems for anyone at risk of serotonin syndrome, which means caution is advisable if you are taking SSRIs (which reduce the rate at which the brain can scrub serotonin, with the usually laudable goal of having more serotonin in the brain—but it is possible to have too much of a good thing, and serotonin syndrome isn’t fun).

As ever, do check with your pharmacist and/or doctor, to be sure, since they can advise with regard to your specific situation and any medications you may be taking.

Want to try some?

We don’t sell it, but here for your convenience is an example product on Amazon

Enjoy!

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  • Healthy Chocolate Fudge Energy Bites

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    While these are quite high-calorie, they’re also high in protein, and the fiber and healthy fats flatten the blood sugar curve:

    You will need

    • 1 cup peanut butter
    • 4 oz dark chocolate, melted (try to get dark chocolate with >80% cocoa, if you can; 85% is very respectable and 90% is perfect)
    • ⅓ cup maple syrup (you can safely reduce this, or even omit it, if you prefer less sweetness)
    • ¼ cup hazelnuts
    • ¼ cup almond milk (or your preferred milk, but we recommend almond for taste and health)
    • 1 tsp vanilla extract
    • Topping: ¼ cup hazelnuts, roughly chopped

    Method

    (we suggest you read everything at least once before doing anything)

    1) Combine all the ingredients (except the topping) in a food processor, and blend until smooth.

    2) Line a container (5″x7″ is a good size) with baking paper and spread the mixture evenly into it, pressing down gently.

    3) Sprinkle the topping onto it, press that even more gently into it.

    4) Refrigerate overnight (or chill it for 2hrs in the freezer).

    5) Cut into cubes to serve; they can be served frozen or thawed, per your preference:

    Enjoy!

    Want to learn more?

    For those interested in some of the science of what we have going on today:

    Take care!

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  • Ketogenic Diet: Burning Fat Or Burning Out?

    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 Wednesday’s newsletter, we asked you for your opinion of the keto diet, and got the above-depicted, below-described set of responses:

    • About 45% said “It has its benefits, but they don’t outweigh the risks”
    • About 31% said “It is a good, evidence-based way to lose weight, be energized, and live healthily”
    • About 24% said “It is a woeful fad diet and a fast-track to ruining one’s overall health”

    So what does the science say?

    First, what is the ketogenic diet?

    There are two different stories here:

    • Per science, it’s a medical diet designed to help treat refractory epilepsy in children.
    • Per popular lore, it’s an energizing weight loss diet for Instagrammers and YouTubers.

    Can it be both? The answer is: yes, but with some serious caveats, which we’ll cover over the course of today’s feature.

    The ketogenic diet works by forcing the body to burn fat for energy: True or False?

    True! This is why it helps for children with refractory epilepsy. By starving the body (including the brain) of glucose, the liver must convert fat into fatty acids and ketones, which latter the brain (and indeed the rest of the body) can now use for energy instead of glucose, thus avoiding one of the the main triggers of refractory epilepsy in children.

    See: The Ketogenic Diet: One Decade Later | Pediatrics

    Even the pediatric epilepsy studies, however, conclude it does have unwanted side effects, such as kidney stones, constipation, high cholesterol, and acidosis:

    Source: Dietary Therapies for Epilepsy

    The ketogenic diet is good for weight loss: True or False?

    True! Insofar as it does cause weight loss, often rapidly. Of course, so do diarrhea and vomiting, but these are not usually held to be healthy methods of weight loss. As for keto, a team of researchers recently concluded:

    ❝As obesity rates in the populace keep rising, dietary fads such as the ketogenic diet are gaining traction.

    Although they could help with weight loss, this study had a notable observation of severe hypercholesterolemia and increased risk of atherosclerotic cardiovascular disease among the ketogenic diet participants.❞

    ~ Dr. Shadan Khdher et al.

    Read in full: The Significant Impact of High-Fat, Low-Carbohydrate Ketogenic Diet on Serum Lipid Profile and Atherosclerotic Cardiovascular Disease Risk in Overweight and Obese Adults

    On which note…

    The ketogenic diet is bad for the heart: True or False?

    True! As Dr. Joanna Popiolek-Kalisz concluded recently:

    ❝In terms of cardiovascular mortality, the low-carb pattern is more beneficial than very low-carbohydrate (including the ketogenic diet). There is still scarce evidence comparing ketogenic to the Mediterranean diet.

    Other safety concerns in cardiovascular patients such as adverse events related to ketosis, fat-free mass loss, or potential pharmacological interactions should be also taken into consideration in future research.❞

    ~ Dr. Joanna Popiolek-Kalisz

    Read in full: Ketogenic diet and cardiovascular risk: state of the art review

    The ketogenic diet is good for short-term weight loss, but not long-term maintenance: True or False?

    True! Again, insofar as it works in the short term. It’s not the healthiest way to lose weight and we don’t recommend it, but it did does indeed precipitate short-term weight loss. Those benefits are not typically observed for longer than a short time, though, as the above-linked paper mentions:

    ❝The ketogenic diet does not fulfill the criteria of a healthy diet. It presents the potential for rapid short-term reduction of body mass, triglycerides level, Hb1Ac, and blood pressure.

    Its efficacy for weight loss and the above-mentioned metabolic changes is not significant in long-term observations.❞

    ~ Ibid.

    The ketogenic diet is a good, evidence-based way to lose weight, be energized, and live healthily: True or False?

    False, simply, as you may have gathered from the above, but we’ve barely scratched the surface in terms of the risks.

    That said, as mentioned, it will induce short-term weight loss, and as for being energized, typically there is a slump-spike-slump in energy:

    1. At first, the body is running out of glucose, and so naturally feels weak and tired.
    2. Next, the body enters ketosis, and so feels energized and enlivened ← this is the part where the popular enthusiastic reviews come from
    3. Then, the body starts experiencing all the longer-term problems associated with lacking carbohydrates and having an overabundance of fat, so becomes gradually more sick and tired.

    Because of this, the signs of symptoms of being in ketosis (aside from: measurably increased ketones in blood, breath, and urine) are listed as:

    • Bad breath
    • Weight loss
    • Appetite loss
    • Increased focus and energy
    • Increased fatigue and irritability
    • Digestive issues
    • Insomnia

    The slump-spike-slump we mentioned is the reason for the seemingly contradictory symptoms of increased energy and increased fatigue—you get one and then the other.

    Here’s a small but illustrative study, made clearer by its participants being a demographic whose energy levels are most strongly affected by dietary factors:

    The glycaemic benefits of a very-low-carbohydrate ketogenic diet in adults with Type 1 diabetes mellitus may be opposed by increased hypoglycaemia risk and dyslipidaemia

    The ketogenic diet is a woeful fad diet and a fast-track to ruining one’s overall health: True or False?

    True, subjectively in the first part, as it’s a little harsher than we usually go for in tone, though it has been called a fad diet in scientific literature. The latter part (ruining one’s overall health) is observably true.

    One major problem is incidental-but-serious, which is that a low-carb diet is typically a de facto low-fiber diet, which is naturally bad for the gut and heart.

    Other things are more specific to the keto diet, such as the problems with the kidneys:

    The Relationship between Modern Fad Diets and Kidney Stone Disease: A Systematic Review of Literature

    However, kidney stones aren’t the worst of the problems:

    Is Losing Weight Worth Losing Your Kidney: Keto Diet Resulting in Renal Failure

    We’re running out of space and the risks associated with the keto diet are many, but for example even in the short term, it already increases osteoporosis risk:

    ❝Markers of bone modeling/remodeling were impaired after short-term low-carbohydrate high-fat diet, and only one marker of resorption recovered after acute carbohydrate restoration❞

    ~ Dr. Ida Heikura et al.

    A Short-Term Ketogenic Diet Impairs Markers of Bone Health in Response to Exercise

    Want a healthier diet?

    We recommend the Mediterranean diet.

    See also: Four Ways To Upgrade The Mediterranean

    (the above is about keeping to the Mediterranean diet, while tweaking one’s choices within it for a specific extra health focus such as an anti-inflammatory upgrade, a heart-healthy upgrade, a gut-healthy upgrade, and a brain-healthy upgrade)

    Enjoy!

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  • The Brain’s Way of Healing – by Dr. Norman Doidge

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    First, what this book isn’t: any sort of wishy-washy “think yourself better” fluff, and nor is it a “tapping into your Universal Divine Essence” thing.

    In contrast, Dr. Norman Doidge sticks with science, and the only “vibrational frequencies” involved are the sort that come from an MRI machine or similar.

    The author makes bold claims of the potential for leveraging neuroplasticity to heal many chronic diseases. All of them are neurological in whole or in part, ranging from chronic pain to Parkinson’s.

    How well are these claims backed up, you ask?

    The book makes heavy use of case studies. In science, case studies rarely prove anything, so much as indicate a potential proof of principle. Clinical trials are what’s needed to become more certain, and for Dr. Doidge’s claims, these are so far sadly lacking, or as yet inconclusive.

    Where the book’s strengths lie is in describing exactly what is done, and how, to effect each recovery. Specific exercises to do, and explanations of the mechanism of action. To that end, it makes them very repeatable for any would-be “citizen scientist” who wishes to try (in the cases that they don’t require special equipment).

    Bottom line: this book would be more reassuring if its putative techniques had enjoyed more clinical studies… But in the meantime, it’s a fair collection of promising therapeutic approaches for a number of neurological disorders.

    Click here to check out The Brain’s Way of Healing, and learn more!

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  • Mediterranean Diet… In A Pill?

    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.

    Does It Come In A Pill?

    For any as yet unfamiliar with the Mediterranean diet, you may be wondering what it involves, beyond a general expectation that it’s a diet popularly enjoyed in the Mediterranean. What image comes to mind?

    We’re willing to bet that tomatoes feature (great source of lycopene, by the way, and if you’re not getting lycopene, you’re missing out), but what else?

    • Salads, perhaps? Vegetables, olives? Olive oil, yea or nay?
    • Bread? Pasta? Prosciutto, salami? Cheese?
    • Pizza but only if it’s Romana style, not Chicago?
    • Pan-seared liver, with some fava beans and a nice Chianti?

    In fact, the Mediterranean diet is quite clear on all these questions, so to read about these and more (including a “this yes, that no” list), see:

    What Is The Mediterranean Diet, And What Is It Good For?

    So, how do we get that in a pill?

    A plucky band of researchers, Dr. Chiara de Lucia et al. (quite a lot of “et al.”; nine listed authors on the study), wondered to what extent the benefits of the Mediterranean diet come from the fact that the Mediterranean diet is very rich in polyphenols, and set about testing that, by putting the same polyphenols in capsule form, and running a randomized, double-blind, placebo-controlled, crossover clinical intervention trial.

    Now, polyphenols are not the only reason the Mediterranean diet is great; there are also other considerations, such as:

    • a great macronutrient balance with lots of fiber, healthy fats, moderate carbs, and protein from select sources
    • the absence or at least very low presence of a lot of harmful substances such as refined seed oils, added sugars, refined carbohydrates, and the like (“but pasta” yes pasta; in moderation and wholegrain and served with extra sources of fiber and healthy fats, all of which slow down the absorption of the carbs)

    …but polyphenols are admittedly very important too; we wrote about some common aspects of them here:

    Tasty Polyphenols: Enjoy Bitter Foods For Your Heart & Brain

    As for what Dr. de Lucia et al. put into the capsule, behold…

    The ingredients:

    1. Apple Extract 10.0%
    2. Pomegranate Extract 10.0%
    3. Tomato Powder 2.5%
    4. Beet, Spray Dried 2.5%
    5. Olive Extract 7.5%
    6. Rosemary Extract 7.5%
    7. Green Coffee Bean Extract (CA) 7.5%
    8. Kale, Freeze Dried 2.5%
    9. Onion Extract 10.0%
    10. Ginger Extract 10.0%
    11. Grapefruit Extract 2.5%
    12. Carrot, Air Dried 2.5%
    13. Grape Skin Extract 17.5%
    14. Blueberry Extract 2.5%
    15. Currant, Freeze Dried 2.5%
    16. Elderberry, Freeze Dried 2.5%

    And the relevant phytochemicals they contain:

    • Quercetin
    • Luteolin
    • Catechins
    • Punicalagins
    • Phloretin
    • Ellagic Acid
    • Naringin
    • Apigenin
    • Isorhamnetin
    • Chlorogenic Acids
    • Rosmarinic Acid
    • Anthocyanins
    • Kaempferol
    • Proanthocyanidins
    • Myricetin
    • Betanin

    And what, you may wonder, did they find? Well, first let’s briefly summarise the setup of the study:

    They took volunteers (n=30), average age 67, BMI >25, without serious health complaints, not taking other supplements, not vegetarian or vegan, not consuming >5 cups of coffee per day, and various other stipulations like that, to create a fairly homogenous study group who were expected to respond well to the intervention. In contrast, someone who takes antioxidant supplements, already eats many different color plants per day, and drinks 10 cups of coffee, probably already has a lot of antioxidant activity going on, and someone with a lower BMI will generally have lower resting levels of inflammatory markers, so it’s harder to see a change, proportionally.

    About those inflammatory markers: that’s what they were testing, to see whether the intervention “worked”; essentially, did the levels of inflammatory markers go up or down (up is bad; down is good).

    For more on inflammation, by the way, see:

    How to Prevent (or Reduce) Inflammation

    …which also explains what it actually is, and some important nuances about it.

    Back to the study…

    They gave half the participants the supplement for a week and the other half placebo; had a week’s gap as a “washout”, then repeated it, switching the groups, taking blood samples before and after each stage.

    What they found:

    The group taking the supplement had lower inflammatory markers after a week of taking it, while the group taking the placebo had relatively higher inflammatory markers after a week of taking it; this trend was preserved across both groups (i.e., when they switched roles for the second half).

    The results were very significant (p=0.01 or thereabouts), and yet at the same time, quite modest (i.e. the supplement made a very reliable, very small difference), probably because of the small dose (150mg) and small intervention period (1 week).

    What the researchers concluded from this

    The researchers concluded that this was a success; the study had been primarily to provide proof of principle, not to rock the world. Now they want the experiment to be repeated with larger sample sizes, greater heterogeneity, larger doses, and longer intervention periods.

    This is all very reasonable and good science.

    Read in full: A Randomised, Double-Blind, Placebo-Controlled, Cross-Over Clinical Trial to Evaluate the Biological Effects and Safety of a Polyphenol Supplement on Healthy Ageing

    What we conclude from this

    That ingredients list makes for a good shopping list!

    Well, not the extracts they listed, necessarily, but rather those actual fruits, vegetables, etc.

    If nine top scientists (anti-aging specialists, neurobiologists, pharmacologists, and at least one professor of applied statistics) came to the conclusion that to get the absolute most bang-for-buck possible, those are the plants to get the phytochemicals from, then we’re not going to ignore that.

    So, take another list above and ask yourself: how many of those 16 foods do you eat regularly, and could you work the others in?

    Want to make your Mediterranean diet even better?

    While the Mediterranean diet is a top-tier catch-all, it can be tweaked for specific areas of health, for example giving it an extra focus on heart health, or brain health, or being anti-inflammatory, or being especially gut healthy:

    Four Ways To Upgrade The Mediterranean

    Enjoy!

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  • Carrot vs Kale – Which is Healthier?

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    Our Verdict

    When comparing carrot to kale, we picked the kale.

    Why?

    These are both known as carotene-containing heavyweights, but kale emerges victorious:

    In terms of macros, carrot has more carbs while kale has more protein and fiber. An easy win there for kale.

    When it comes to vitamins, both are great! But, carrots contain more of vitamins A, B5, and choline, whereas kale contains more of vitamins B1, B2, B3, B6, B9, C, E, and K. And while carrot’s strongest point is vitamin A, a cup of carrots contains around 10x the recommended daily dose of vitamin A, whereas a cup of kale contains “only” 6x the recommended daily dose of vitamin A. So, did we really need the extra in carrots? Probably not. In any case, kale already won on overall vitamin coverage, by a long way.

    In the category of minerals, kale again sweeps. On the one hand, carrots contain more sodium. On the other hand, kale contains a lot more calcium, copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc. Not a tricky choice!

    But don’t be fooled: carrots really are a nutritional powerhouse and a great food. Kale is just better—nutritionally speaking, in any case. If you’re making a carrot cake, please don’t try substituting kale; it will not work 😉

    Want to learn more?

    You might like to read:

    Brain Food? The Eyes Have It!

    Take care!

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  • Hazelnuts vs Almonds – Which is Healthier?

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    Our Verdict

    When comparing hazelnuts to almonds, we picked the almonds.

    Why?

    It’s closer than you might think! But we say almonds do come out on top.

    In terms of macronutrients, almonds have notably more protein, while hazelnuts have notably more fat (healthy fats, though). Almonds are also higher in both carbs and fiber. Looking at Glycemic Index, hazelnuts’ GI is low and almonds’ GI is zero. We could call the macros category a tie, but ultimately if we need to prioritize any of these things, it’s protein and fiber, so we’ll call this a nominal win for almonds.

    When it comes to vitamins, hazelnuts have more of vitamins B1, B5, B6, B9 C, and K. Meanwhile, almonds have more of vitamins B2, B3, E, and choline. So, a moderate win for hazelnuts.

    In the category of minerals, almonds retake the lead with more calcium, magnesium, phosphorus, potassium, selenium, and zinc, while hazelnuts boast more copper and manganese. A clear win for almonds.

    Adding up the categories, this makes for a marginal win for almonds. Of course, both of these nuts are very healthy (assuming you are not allergic), and best is to enjoy both if possible.

    Want to learn more?

    You might like to read:

    Take care!

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