Five Flavors & Five Benefits
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Five Flavors Of Good Health
Schisandra chinensis, henceforth Schisandra, is also called the “five flavor fruit”, for covering the culinary bases of sweet, salt, bitter, sour, and pungent.
It can be eaten as a fruit (small red berries), juiced from the fruit, or otherwise extracted into supplements (dried powder of the fruit being a common one).
It has long enjoyed usage in various traditional medicines, especially in China and Siberia.
So, what are its health claims, and how does the science stack up?
Menopause
Most of the studies are mouse studies, and we prefer studies on humans, so here’s a small (n=36) randomized clinical trial that concluded…
❝Schisandra chinensis can be a safe and effective complementary medicine for menopausal symptoms, especially for hot flushes, sweating, and heart palpitations❞
~ Dr. Joon Young Park & Dr. Kye Hyun Kim
Read more: A randomized, double-blind, placebo-controlled trial of Schisandra chinensis for menopausal symptoms
Antioxidant (and perhaps more)
Like many berries, it’s a good source of lignans offering antioxidant effects:
Antioxidant Effects of Schisandra chinensis Fruits and Their Active Constituents
Lignans usually have anticancer effects too (which is reasonably, given what is antioxidant is usually anticancer and anti-inflammatory as well, by the same mechanism) but those have not yet been studied in schisandra specifically.
Antihepatotoxicity
In other words, it’s good for your liver. At least, so animal studies tell us, because human studies haven’t been done yet for this one. The effect is largely due to its antioxidant properties, but it seems especially effective for the liver—which is not surprising, giving the liver’s regeneration mechanism.
Anyway, here’s a fascinating study that didn’t even need to use the fruit itself, just the pollen from the plant, it was that potent:
Athletics enhancer
While it’s not yet filling the shelves of sports nutrition stores, we found a small (n=45) study with healthy post-menopausal women who took either 1g of schisandra (experimental group) or 1g of starch (placebo group), measured quadriceps muscle strength and resting lactate levels over the course of a 12 week intervention period, and found:
❝Supplementation of Schisandra chinensis extract can help to improve quadriceps muscle strength as well as decrease lactate level at rest in adult women ❞
Anti-Alzheimers & Anti-Parkinsons
The studies for this are all in vitro, but that’s because it’s hard to find volunteers willing to have their brains sliced and looked at under a microscope while they’re still alive.
Nevertheless, the results are compelling, and it seems uncontroversial to say that schisandra, or specifically Schisandrin B, a compound it contains, has not only anti-inflammatory properties, but also neuroprotective properties, and specifically blocks the formation of excess amyloid-β peptides in the brain (which are critical for the formation of amyloid plaque, as found in the brains of Alzheimer’s patients):
Is it safe?
For most people, yes! Some caveats:
- As it can stimulate the uterus, it’s not recommended if you’re pregant.
- Taking more than the recommended amount can worsen symptoms of heartburn, GERD, ulcers, or other illnesses like that.
And as ever, do speak with our own doctor/pharmacist if unsure, as your circumstances may vary and we cannot cover all possibilities here.
Where can I get some?
We don’t sell it, but here for your convenience is an example product on Amazon
Enjoy!
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Energize! – by Dr. Michael Breus & Stacey Griffith
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We previously reviewed another book book by Dr. Breus, The Power Of When. So what’s different in this one?
While the chronotypes featured in The Power Of When also feature here (and sufficient explanation is given to make this a fine stand-alone book), this book has a lot to do with metabolism also. By considering a person’s genetically predisposed metabolic rate to be fast, medium, or slow (per being an ectomorph, mesomorph, or endomorph), and then putting that next to one’s sleep chronotype, we get 12 sub-categories that in this book each get an optimized protocol of sleep, exercise (further divided into: what kind of exercise when), and eating/fasting.
Which, in effect, amounts to a personalized coaching program for optimized energy!
The guidance is based on a combination of actual science plus “if this then that” observation-based principles—of the kind that could be described as science if they had been studied clinically instead of informally. Dr. Breus is a sleep scientist, by the way, and his co-author Stacey Griffith is a fitness coach. So between the two of them, they have sleep and exercise covered, and the fasting content is very reasonable and entirely consistent with current consensus of good practice.
The style is very pop-psychology, and very readable, and has a much more upbeat feel than The Power Of When, which seems to be because of Griffith’s presence as a co-author (most of the book is written from a neutral perspective, and some parts have first-person sections by each of the authors, so the style becomes distinct accordingly).
Bottom line: if you’d like to be more energized but [personal reason why not here] then this book may not fix all your problems, but it’ll almost certainly make a big difference and help you to stop sabotaging things and work with your body rather than against it.
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Goji Berries: Which Benefits Do They Really Have?
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Are Goji Berries Really A Superfood?
Goji berries are popularly considered a superfood, and sold for everything from anti-aging effects, to exciting benefits* that would get this email directed to your spam folder if we described them.
*We searched so you don’t have to: there doesn’t seem to be much research to back [that claim that we can’t mention], but we did find one paper on its “invigorating” benefits for elderly male rats. We prefer to stick to human studies where we can!
So how does the science stack up for the more mainstream claims?
Antioxidant effects
First and most obvious for this fruit that’s full of helpful polysaccharides, carotenoids, phenolic acids, and flavonoids, yes, they really do have strong antioxidant properties:
Immune benefits
Things that are antioxidant are generally also anti-inflammatory, and often have knock-on benefits for the immune system. That appears to be the case here.
For example, in this small-but-statistically-significant study (n=60) in healthy adults (aged 55–72 years)
❝The GoChi group showed a statistically significant increase in the number of lymphocytes and levels of interleukin-2 and immunoglobulin G compared to pre-intervention and the placebo group, whereas the number of CD4, CD8, and natural killer cells or levels of interleukin-4 and immunoglobulin A were not significantly altered. The placebo group showed no significant changes in any immune measures.
Whereas the GoChi group showed a significant increase in general feelings of well-being, such as fatigue and sleep, and showed a tendency for increased short-term memory and focus between pre- and post-intervention, the placebo group showed no significant positive changes in these measures.❞
“GoChi” here is a brand name for goji berries, and it’s not clear from the abstract whether the company funded the study:
Here’s another study, this time n=150, and ages 65–70 years old. This time it’s with a different brand (“Lacto-Wolfberry”, a milk-with-goji supplement drink) and it’s also unclear whether the company funded the study. However, taking the data at face value:
❝In conclusion, long-term dietary supplementation with Lacto-Wolfberry in elderly subjects enhances their capacity to respond to antigenic challenge without overaffecting their immune system, supporting a contribution to reinforcing immune defense in this population. ❞
In other words: it allowed those who took it to get measurably more benefit from the flu vaccinations that they received, without any ill effects.
Anticancer potential
This one’s less contentious (the immune benefits seemed very credible; we’d just like to see more transparent research to say for sure), so in the more clearly-evidenced case against cancer we’ll just drop a few quick studies, clipped for brevity:
- Goji berry (Lycium barbarum) inhibits the proliferation, adhesion, and migration of oral cancer cells
- A closer look at immunomodulatory properties of goji berries extract in human colon cancer cells
- Lycium barbarum polysaccharides induce apoptosis in human prostate cancer cells and inhibits prostate cancer growth
- Identification of goji berry cyclic peptides and anticervical carcinoma activity
- Antiproliferative effects of Lycium barbarum’s (goji berry) fractions on breast cancer Cell Lines
You get the idea: it helps!
Bonus benefit for the eyes
Goji berries also help against age-related macular degeneration. The research for this is in large part secondary, i.e. goji berries contain things x, y, and z, and then separate studies say that those things help against age-related macular degeneration.
We did find some goji-specific studies though! One of them was for our old friends the “Lacto-Wolfberry” people and again, wasn’t very transparent, so we’ll not take up extra time/space with that one here.
Instead, here’s a much clearer, transparent, and well-referenced study with no conflicts of interest, that found:
❝Overall, daily supplementation with Goji berry for 90d improves MPOD by increasing serum Z levels rather than serum L levels in early AMD patients. Goji berry may be an effective therapeutic intervention for preventing the progression of early AMD.❞
- MPOD = Macular Pigment Optical Density, a standard diagnostic tool for age-related macular degeneration
- AMD = Age-related Macular Degeneration
(that whole paper is very compelling reading, if you have time)
If you want a quicker read, we offer:
How To Avoid Age-Related Macular Degeneration
and also…
Where to get goji berries?
You can probably find them at your local health food store, if not the supermarket. However, if you’d like to buy them online, here’s an example product on Amazon for your convenience
Enjoy!
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Eating on the Wild Side: – by Jo Robinson
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The author is an investigative journalist, and it shows here, as she leaves no stone unturned in her quest for the truth in the face of many food myths.
She covers a lot of “popular wisdom” things that are varyingly true or false, or sometimes even both—in the case of food lore that’s a good rule of thumb, but has notable exceptions (e.g. “more colorful and/or darker-colored fruits/vegetables contain more nutrients”, which is a very good rule of thumb until one meets a cauliflower, for example).
She also covers food preparation myths, and how, to give one example, in spite of the popularity of “less cooked is better”, in some cases certain cooking methods will indeed destroy nutrients; in others, certain cooking methods will improve nutritional availability. Either by destroying an adjacent antinutrient (e.g. phytates), or by breaking something down into a more manageable form that our body can absorb. Knowing which is which, is important.
The book is organized by kinds of food, and does exclusively cover plants, but there’s more than enough material for any omnivore to enjoy.
The style is… Journalistic, it would be fair to say. Which is not surprising, given the author. But it means that it is written in a fairly narrative way, to draw the reader in and make it an enjoyable read while still being informative in all parts (there is no padding). In terms of science, the in-the-prose science is as minimal as possible to still convey what needs to be conveyed, while 25 pages of bibliography stack up at the end to show that indeed, this journalist cites sources.
Bottom line: this is a really enjoyable book, packed with a wealth of knowledge, and is perfect to uplift your cooking by knowing your ingredients a little more intimately!
Click here to check out Eating On The Wild Side, and, enjoy!
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Colloidal Gold’s Impressive Claims
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All That Glitters…
Today we’ll be examining colloidal gold supplementation.
This issue of 10almonds brought to you by the writer suddenly getting lots of advertisements for this supplement. It’s not a new thing though, and has been around in one form or another since pretty much forever.
Colloidal gold is…
- Gold, as in the yellow metal
- Colloidal, as in “very tiny insoluble particles dispersed though another substance (such as water)”
What are the claims made for it?
Honestly, just about everything is claimed for it. But to go with some popular claims:
- Reduces inflammation
- Supports skin health
- Boosts immune function
- Combats aging
- Improves cognitive function
So, what does the science say?
Does it do those things?
The short and oversimplified answer is: no
However, there is a little bit of tangential merit, so we’re going to talk about the science of it, and how the leap gets made between what the science says and what the advertisements say.
First… What makes gold so special, in general? Historically, three things:
- It’s quite rare
- It’s quite shiny
- It’s quite unreactive
- The first is about supply and demand, so that’s not very important to us in this article.
- The second is an aesthetic quality, which actually will have a little bit of relevance, but not much.
- The third has been important historically (because it meant that shiny gold stayed shiny, because it didn’t tarnish), and now also important industrially too, as gold can be used in many processes where we basically need for nothing to happen (i.e., a very inert component is needed)
That third quality—its unreactivity—has become important in medicine.
When scientists need a way to deliver something (without the delivering object getting eaten by the body’s “eat everything” tendencies), or otherwise not interact chemically with anything around, gold is an excellent choice.
Hence gold teeth, and gold fillings, by the way. They’re not just for the bling factor; they were developed because of their unreactivity and thus safety.
So, what about those health claims we mentioned above?
Here be science (creative interpretations not included)
The most-backed-by-science claim from that list is “reduces inflammation”.
Websites selling colloidal gold cite studies such as:
Gold nanoparticles reduce inflammation in cerebral microvessels of mice with sepsis
A promising title!The results of the study showed:
❝20 nm cit-AuNP treatment reduced leukocyte and platelet adhesion to cerebral blood vessels, prevented BBB failure, reduced TNF- concentration in brain, and ICAM-1 expression both in circulating polymorphonuclear (PMN) leukocytes and cerebral blood vessels of mice with sepsis. Furthermore, 20 nm cit-AuNP did not interfere with the antibiotic effect on the survival rate of mice with sepsis.❞
That “20 nm cit-AuNP” means “20 nm citrate-covered gold nanoparticles”
So it is not so much the antioxidant powers of gold being tested here, as the antioxidant powers of citrate, a known antioxidant. The gold was the carrying agent, whose mass and unreactivity allowed it to get where it needed to be.
The paper does say the words “Gold nanoparticles have been demonstrated to own important anti-inflammatory properties“ in the abstract, but does not elaborate on that, reference it, or indicate how.
Websites selling colloidal gold also cite papers such as:
Anti-inflammatory effect of gold nanoparticles supported on metal oxides
Another promising title! However the abstract mentions:
❝The effect was dependent on the MOx NPs chemical nature
[…]
The effect of Au/TiO2 NPs was not related to Au NPs size❞
MOx NPs = mineral oxide nanoparticles. In this case, the gold was a little more than a carrying agent, though, because the gold is described and explained as being a catalytic agent (i.e., its presence helps the attached mineral oxides react more quickly).
We said that was the most-backed claim, and as you can see, it has some basis but is rather tenuous since the gold by itself won’t do anything; it just helps the mineral oxides.
Next best-backed claim builds from that, which is “supports skin health”.
Sometimes colloidal gold is sold as a facial tonic. By itself it’ll distribute (inert) gold nanoparticles across your skin, and may “give you a healthy glow”, because that’s what happens when you put shiny wet stuff on your face.
Healthwise, if the facial tonic also contains some of the minerals we mentioned above, then it may have an antioxidant effect. But again, no minerals, no effect.
The claim that it “combats aging” is really a tag-on to the “antioxidant” claim.
As for the “supports immune health” claim… Websites selling colloid gold cite studies such as:
To keep things brief: gold can fight infectious diseases in much the same way that forks can fight hunger. It’s an inert carrying agent.
As for “improves cognitive function”? The only paper we could find cited was that mouse sepsis study again, this time with the website saying “researchers found that rats treated with colloidal gold showed improved spatial memory and learning ability“ whereas the paper cited absolutely did not claim that, not remotely, not even anything close to that. It wasn’t even rats, it was mice, and they did not test their memory or learning.
Is it safe?
Colloidal gold supplementation is considered very safe, precisely because gold is one of the least chemically reactive substances you could possibly consume. It is special precisely because it so rarely does anything.
However, impurities could be introduced in the production process, and the production process often involves incredibly harsh reagents to get the gold ions, and if any of those reagents are left in the solution, well, gold is safe but sodium borohydride and chloroauric acid aren’t!
Where can I get some?
In the unlikely event that our research review has given you an urge to try it, here’s an example product on Amazon
Take care!
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Peony Against Inflammation & More
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Yes, this is about the flower, especially white peony (Paeonia lactiflora), and especially the root thereof (Paeoniae radix alba). Yes, the root gets a different botanical name but we promise it is the same plant. You will also read about its active glycoside paeoniflorin, and less commonly, albiflorin (a neuroprotective glycoside present in the root).
It’s one of those herbs that has made its way out of Traditional Chinese Medicine and into labs around the world.
It can be ingested directly as food, or as a powder/capsule, or made into tea.
Anti-inflammatory
Peony suppresses inflammatory pathways, which thus reduces overall inflammation. In particular, this research review found:
❝Pharmacologically, paeoniflorin exhibits powerful anti-inflammatory and immune regulatory effects in some animal models of autoimmune diseases including Rheumatoid Arthritis (RA) and Systemic Lupus Erythematosus (SLE)❞
The reviewers also (albeit working from animal models) suggest it may be beneficial in cases of kidney disease and liver disease, along with other conditions.
Here’s a larger review, which also has studies involving humans (and in vivo studies), that found it to effectively help treat autoimmune conditions including rheumatoid arthritis and psoriasis, amongst others:
❝Modern pharmacological research on TGP is based on the traditional usage of PRA, and its folk medicinal value in the treatment of autoimmune diseases has now been verified. In particular, TGP has been developed into a formulation used clinically for the treatment of autoimmune diseases.
Based on further research on its preparation, quality control, and mechanisms of action, TGP is expected to eventually play a greater role in the treatment of autoimmune diseases. ❞
(TGP = Total Glucosides of Paeony)
Antidepressant / Anxiolytic
It also acts as a natural serotonin reuptake inhibitor (as per many pharmaceutical antidepressants), by reducing the expression of the serotonin transporter protein:
Gut Microbiota-Based Pharmacokinetics and the Antidepressant Mechanism of Paeoniflorin
(remember, most serotonin is produced in the gut)
Here’s how that played out when tested (on rats, though):
Against PMS and/or menopause symptoms
Peony is widely used in Traditional Chinese Medicine to reduce these symptoms in general. However, we couldn’t find a lot of good science for that, although it is very plausible (as the extract contains phytoestrogens and may upregulate estrogen receptors while dialling down testosterone production). Here’s the best we could find for that, and it’s a side-by-side along with licorice root:
❝Paeoniflorin, glycyrrhetic acid and glycyrrhizin decreased significantly the testosterone production but did not change that of delta 4-androstenedione and estradiol. Testosterone/delta 4-androstenedione production ratio was lowered significantly by paeoniflorin, glycyrrhetic acid and glycyrrhizin❞
Effect of paeoniflorin, glycyrrhizin and glycyrrhetic acid on ovarian androgen production
(note: that it didn’t affect estradiol levels is reasonable; it contains phytoestrogens after all, not estradiol—and in fact, if you are taking estradiol, you might want to skip this one, as its phytoestrogens could compete with your estradiol for receptors)
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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Is Cutting Calories The Key To Healthy Long Life?
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Caloric Restriction with Optimal Nutrition
Yesterday, we asked you “What is your opinion of caloric restriction as a health practice?” and got the above-depicted, below-described spread of responses:
- 48% said “It is a robust, scientifically proven way to live longer and healthier”
- 23% said “It may help us to live longer, but at the cost of enjoying it fully”
- 17% said “It’s a dangerous fad that makes people weak, tired, sick, and unhealthy”
- 12% said “Counting calories is irrelevant to good health; the body compensates”
So… What does the science say?
A note on terms, first
“Caloric restriction” (henceforth: CR), as a term, sees scientific use to mean anything from a 25% reduction to a 50% reduction, compared to metabolic base rate.
This can also be expressed the other way around, “dropping to 60% of the metabolic base rate” (i.e., a 40% reduction).
Here we don’t have the space to go into much depth, so our policy will be: if research papers consider it CR, then so will we.
A quick spoiler, first
The above statements about CR are all to at least some degree True in one way or another.
However, there are very important distinctions, so let’s press on…
CR is a robust, scientifically proven way to live longer and healthier: True or False?
True! This has been well-studied and well-documented. There’s more science for this than we could possibly list here, but here’s a good starting point:
❝Calorie restriction (CR), a nutritional intervention of reduced energy intake but with adequate nutrition, has been shown to extend healthspan and lifespan in rodent and primate models.
Accumulating data from observational and randomized clinical trials indicate that CR in humans results in some of the same metabolic and molecular adaptations that have been shown to improve health and retard the accumulation of molecular damage in animal models of longevity.
In particular, moderate CR in humans ameliorates multiple metabolic and hormonal factors that are implicated in the pathogenesis of type 2 diabetes, cardiovascular diseases, and cancer, the leading causes of morbidity, disability and mortality❞
Source: Ageing Research Reviews | Calorie restriction in humans: an update
See also: Caloric restriction in humans reveals immunometabolic regulators of health span
We could devote a whole article (or a whole book, really) to this, but the super-short version is that it lowers the metabolic “tax” on the body and allows the body to function better for longer.
CR may help us to live longer, but at the cost of enjoying it fully: True or False?
True or False, contingently, depending on what’s important to you. And that depends on psychology as much as physiology, but it’s worth noting that there is often a selection bias in the research papers; people ill-suited to CR drop out of the studies and are not counted in the final data.
Also, relevant for a lot of our readers, most (human-based) studies recruit people over 18 and under 60. So while it is reasonable to assume the same benefits will be carried over that age, there is not nearly as much data for it.
Studies into CR and Health-Related Quality of Life (HRQoL) have been promising, and/but have caveats:
❝In non-obese adults, CR had some positive effects and no negative effects on HRQoL.❞
❝We do not know what degree of CR is needed to achieve improvements in HRQoL, but we do know it requires an extraordinary amount of support.
Therefore, the incentive to offer this intervention to a low-risk, normal or overweight individual is lacking and likely not sustainable in practice.❞
CR a dangerous fad that makes people weak, tired, sick, and unhealthy: True or False?
True if it is undertaken improperly, and/or without sufficient support. Many people will try CR and forget that the idea is to reduce metabolic load while still getting good nutrition, and focus solely on the calorie-counting.
So for example, if a person “saves” their calories for the day to have a night out in a bar where they drink their calories as alcohol, then this is going to be abysmal for their health.
That’s an extreme example, but lesser versions are seen a lot. If you save your calories for a pizza instead of a night of alcoholic drinks, then it’s not quite so woeful, but for example the nutrition-to-calorie ratio of pizza is typically not great. Multiply that by doing it as often as not, and yes, someone’s health is going to be in ruins quite soon.
Counting calories is irrelevant to good health; the body compensates: True or False?
True if by “good health” you mean weight loss—which is rarely, if ever, what we mean by “good health” here at 10almonds (unless we clarify such), but it’s a very common association and indeed, for some people it’s a health goal. You cannot sustainably and healthily lose weight by CR alone, especially if you’re not getting optimal nutrition.
Your body will notice that you are starving, and try to save you by storing as much fat as it can, amongst other measures that will similarly backfire (cortisol running high, energy running low, etc).
For short term weight loss though, yes, it’ll work. At a cost. That we don’t recommend.
❝By itself, decreasing calorie intake will have a limited short-term influence.❞
Source: Reducing Calorie Intake May Not Help You Lose Body Weight
See also…
❝Caloric restriction is a commonly recommended weight-loss method, yet it may result in short-term weight loss and subsequent weight regain, known as “weight cycling”, which has recently been shown to be associated with both poor sleep and worse cardiovascular health❞
Source: Dieting Behavior Characterized by Caloric Restriction
In summary…
Caloric restriction is a well-studied area of health science. We know:
- Practised well, it can extend not only lifespan, but also healthspan
- Practised well, it can improve mood, energy, sexual function, and the other things people fear losing
- Practised badly, it can be ruinous to the health—it is critical to practise caloric restriction with optimal nutrition.
- Practised badly, it can lead to unhealthy weight loss and weight regain
One final note…
If you’ve tried CR and hated it, and you practised it well (e.g., with optimal nutrition), then we recommend just not doing it.
You could also try intermittent fasting instead, for similar potential benefits. If that doesn’t work out either, then don’t do that either!
Sometimes, we’re just weird. It can often be because of a genetic or epigenetic quirk. There are usually workarounds, and/but not everything that’s right for most people will be right for all of us.
Take care!
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