Tribulus Terrestris For Testosterone?
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(Clinical) Trials and Tribul-ations
In the category of supplements that have enjoyed use as aphrodisiacs, Tribulus terrestris (also called caltrop, goat’s head, gokshura, or puncture vine) has a long history, having seen wide use in both Traditional Chinese Medicine and in Ayurveda.
It’s been used for other purposes too, and has been considered a “general wellness” plant.
So, what does the science say?
Good news: very conclusive evidence!
Bad news: the conclusion is not favorable…
Scientists are known for their careful use of clinical language, and it’s very rare for a study/review to claim something as proven (scientists leave journalists to do that part), and in this case, when it comes to Tribulus’s usefulness as a testosterone-enhancing libido-boosting supplement…
❝analysis of empirical evidence from a comprehensive review of available literature proved this hypothesis wrong❞
Strong words! You can read it in full here; they do make some concessions along the way (e.g. mentioning unclear or contradictory findings, suggesting that it may have some effect, but by an as-yet unknown mechanism if it does—although some potential effect on nitric oxide levels has been hypothesized, which is reasonable if so, as NO does feature in arousal-signalling), but the general conclusion is “no, this doesn’t have androgen-enhancing properties”:
Pro-sexual and androgen enhancing effects of Tribulus terrestris L.: Fact or Fiction
That’s a review though, what about taking a look at a representative RCT? Here we go:
❝Tribulus terrestris was not more effective than placebo on improving symptoms of erectile dysfunction or serum total testosterone❞
As a performance-enhancer in sport
We’ll be brief here: it doesn’t seem to work and it may not be safe:
Insights into Supplements with Tribulus Terrestris used by Athletes
From sport, into general wellness?
Finally, a study that finds it may be useful for something!
❝Overall, participants supplemented with TT displayed significant improvements in lipid profile. Inflammatory and hematological biomarkers showed moderate beneficial effects with no significant changes on renal biomarkers. No positive effects were observed on the immune system response. Additionally, no TT-induced toxicity was reported.
In conclusion, there was no clear evidence of the beneficial effects of TT supplementation on muscle damage markers and hormonal behavior.❞
About those lipids…
Animal studies have shown that it may not only improve lipid profiles, but also may partially repair the endothelial dysfunction resulting from hyperlipidemia:
Want to try some?
In the unlikely event that today’s research review has inspired you with an urge to try Tribulus terrestris, here’s an example product on Amazon
If on the other hand you’d like to actually increase testosterone levels, then we suggest:
Topping Up Testosterone? ← a previous main feature did earlier this year
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The Galveston Diet – by Dr. Mary Claire Haver
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We’ve previously reviewed “It’s Not You, It’s Your Hormones” by nutritionist Nikki Williams, and noted at the time that it was very similar to the bestselling “The Galveston Diet”, not just in its content but all the way down its formatting. Some Amazon reviewers have even gone so far as to suggest that “It’s Not You, It’s Your Hormones” (2017) brazenly plagiarized “The Galveston Diet” (2023). However, after carefully examining the publication dates, we feel quite confident that the the earlier book did not plagiarize the later one.
Of course, we would not go so far as to make a counter-accusation of plagiarism the other way around; it was surely just a case of Dr. Haver having the same good ideas 6 years later.
Still, while the original book by Nikki Williams did not get too much international acclaim, the later one by Dr. Mary Claire Haver has had very good marketing and thus received a lot more attention, so let’s review it:
Dr. Haver’s basic principle is (again) that we can manage our hormonal fluctuations, by managing our diet. Specifically, in the same three main ways:
- Intermittent fasting
- Anti-inflammatory diet
- Eating more protein and healthy fats
Why should these things matter to our hormones? The answer is to remember that our hormones aren’t just the sex hormones. We have hormones for hunger and satedness, hormones for stress and relaxation, hormones for blood sugar regulation, hormones for sleep and wakefulness, and more. These many hormones make up our endocrine system, and affecting one part of it will affect the others.
Will these things magically undo the effects of the menopause? Well, some things yes, other things no. No diet can do the job of HRT. But by tweaking endocrine system inputs, we can tweak endocrine system outputs, and that’s what this book is for.
The style is once again very accessible and just as clear, and Dr. Haver also walks us just as skilfully through the changes we may want to make, to avoid the changes we don’t want. The recipes are also very similar, so if you loved the recipes in the other book, you certainly won’t dislike this book’s menu.
In the category of criticism, there is (as with the other book by the other author) some extra support that’s paywalled, in the sense that she wants the reader to buy her personally-branded online plan, and it can feel a bit like she’s holding back in order to upsell to that.
Bottom line: this book is (again) aimed at peri-menopausal and post-menopausal women. It could also (again) definitely help a lot of people with PCOS too, and, when it comes down to it, pretty much anyone with an endocrine system. It’s (still) a well-evidenced, well-established, healthy way of eating regardless of age, sex, or (most) physical conditions.
Click here to check out The Galveston Diet, and enjoy its well-told, well-formatted advice!
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Broad Beans vs Sweetcorn – Which is Healthier?
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Our Verdict
When comparing broad beans to sweetcorn, we picked the broad beans.
Why?
Firstly, you may be wondering: “aren’t broad beans fava beans?”, and yes, yes they are, but by convention, broad beans are the young green beans, while fava beans are the mature beans of the plant. Similar situation to the relationship between edamame and soybeans. And, in both cases, you’re more likely to put the young green beans in a salad, thus making the broad beans the more reasonable vegetable to compare to the sweetcorn. On which note…
In terms of macros, the broad beans have more protein and fiber, while the sweetcorn has more carbs. We call that a win for the beans.
Looking at the vitamins, the broad beans have (barely) more vitamin B6, while the sweetcorn has more of vitamins A, B1, B2, B5, B9, E, and choline. An easy win for the corn this time.
In the category of minerals, the situation is reversed: broad beans have more calcium, copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc, while sweetcorn is not higher in any minerals. So, a clear win for the beans.
Adding up the sections gives a 2:1 win for the beans over the corn, but by all means enjoy either or both—together is great, and diversity is good!
Want to learn more?
You might like to read:
What’s Your Plant Diversity Score?
Enjoy!
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Buckwheat vs Bulgur Wheat – Which is Healthier?
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Our Verdict
When comparing buckwheat to bulgur, we picked the buckwheat.
Why?
First, some things to know up front:
- Bulgur wheat is a kind of cracked wheat product. As such, it contains wheat, and yes, gluten.
- Buckwheat is not a wheat, nor even a grass, but a flowering plant. Buckwheat is as related to wheat as a lionfish is to a lion. It does not contain gluten.
- Buckwheat can be purchased whole or hulled. We went with whole. If you go with hulled, the percentages of vitamins and minerals will be relatively higher, and/but this will be because you lost the fibrous husk, so they’ll be commensurately lower in fiber. If you were to go with hulled, we’d still pick it over bulgur wheat though, just for a different reason (as in that case, the vitamin and mineral contents would be more overwhelmingly in buckwheat’s favor, even though it’d have less fiber).
Ok, now that those things are covered…
Looking at the macronutrients, there’s not a lot between them, except that buckwheat has the much lower glycemic index (this is only the case if you got whole, not hulled—if you got hulled, the glycemic index would be about the same).
In terms of vitamins, buckwheat has more of vitamins B2, B5, B9, E, K, and choline, while bulgur wheat technically has more vitamin A, but the numbers are tiny; a cup of bulgur wheat will give you 0.12% of the RDA. So, an easy win (functionally: 5:0) for buckwheat.
When it comes to minerals, buckwheat has more copper, magnesium, potassium, and selenium, while bulgur wheat has more calcium and manganese. They’re equal on iron and phosphorus, making this a 4:2 win for buckwheat.
Adding up the categories makes this a clear win for buckwheat!
Want to learn more?
You might like to read:
Take care!
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Healthy Tiramisu
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Tiramisu (literally “pick-me-up”, “tira-mi-su”) is a delightful dish that, in its traditional form, is also a trainwreck for the health, being loaded with inflammatory cream and sugar, not to mention the cholesterol content. Here we recreate the dish in healthy fashion, being loaded with protein, fiber, and healthy fats, not to mention that the optional sweetener is an essential amino acid. The coffee and cocoa, of course, are full of antioxidants too. All in all, what’s not celebrate?
You will need
- 2 cups silken tofu (no need to press it) (do not substitute with any firmer tofu or it will not work)
- 1 cup oat cream (you can buy this ready-made, or make it yourself by blending oats in water until you get the desired consistency) (you can also just use dairy cream, but that will be less healthy)
- 1 cup almond flour (also simply called “ground almonds”)
- 1 cup espresso ristretto, or otherwise the strongest black coffee you have facility to make
- ¼ cup unsweetened cocoa powder, plus more for dusting
- 1 pack savoiardi biscuits, also called “ladyfinger” biscuits (this was the only part we couldn’t make healthy—if you figure out a way to make it healthy, let us know!) (if vegan, obviously use a vegan substitute biscuit; this writer uses Lotus/Biscoff biscuits, which work well)
- 1 tsp vanilla essence
- ½ tsp almond essence
- Optional: glycine, per taste
- Garnish: roasted coffee beans
Method
(we suggest you read everything at least once before doing anything)
1) Add glycine to the coffee first if you want the overall dish to be sweeter. Glycine has approximately the same sweetness as sugar, and can be used as a 1:1 substitution. Use that information as you see fit.
2) Blend the tofu and the oat cream together in a high-speed blender until smooth. It should have a consistency like cake-batter; if it is too liquidy, add small amounts of almond flour until it is thicker. If it’s too thick, add oat cream until it isn’t. If you want it to be sweeter than it is, add glycine to taste. When happy with its taste and consistency, divide it evenly into two bowls.
3) Add the vanilla essence and almond essence to one bowl, and the cocoa powder to the other, mixing well (in a food processor, or just by using a whisk)
4) Coat the base of a glass dish (such as a Pyrex oven dish, but any dish is fine, and any glass dish will allow for viewing the pretty layers we’ll be making) with a very thin layer of almond flour (if you want sweetness there, you can mix some glycine in with the almond flour first).
4) One by one, soak the biscuits briefly in the coffee, and use them to line to base of the dish.
5) Add a thin layer of chocolate cream, ensuring the surface is as flat as possible. Dust it with cocoa powder, to increase the surface tension.
6) Add a thin layer of vanilla-and-almond cream, ensuring the surface is as flat as possible. Dust it with cocoa powder, to increase the surface tension.
7) Stop and assess: do you have enough ingredients left to repeat these layers? It will depend on the size and shape dish you used. If you do, repeat them, finishing with a vanilla-and-almond cream layer.
8) Dust the final layer with cocoa powder if you haven’t already, and add the coffee bean garnish, if using.
9) Refrigerate for at least 8 hours, and if you have time to prepare it the day before you will eat it, that is best of all.
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- Easily Digestible Vegetarian Protein Sources
- Why You Should Diversify Your Nuts!
- The Bitter Truth About Coffee (or is it?)
- The Sweet Truth About Glycine
- Tiramisu Crunch Bites ← craving tiramisu but not keen on all that effort? Enjoy these!
Take care!
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12 Questions For Better Brain Health
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We usually preface our “Expert Insights” pieces with a nice banner that has a stylish tall cutout that allows us to put a photo of the expert in. Today we’re not doing that, because for today’s camera-shy expert, we could only find one photo, and it’s a small, grainy, square headshot that looks like it was taken some decades ago, and would not fit our template at all. You can see it here, though!
In any case, Dr. Linda Selwa is a neurologist and neurophysiologist with nearly 40 years of professional experience.
The right questions to ask
As a neurologist, she found that one of the problems that results in delayed interventions (and thus, lower efficacy of those interventions) is that people don’t know there’s anything to worry about until a degenerative brain condition has degenerated past a certain point. With that in mind, she bids us ask ourselves the following questions, and discuss them with our primary healthcare providers as appropriate:
- Sleep: Are you able to get sufficient sleep to feel rested?
- Affect, mood and mental health: Do you have concerns about your mood, anxiety, or stress?
- Food, diet and supplements: Do you have concerns about getting enough or healthy enough food, or have any questions about supplements or vitamins?
- Exercise: Do you find ways to fit physical exercise into your life?
- Supportive social interactions: Do you have regular contact with close friends or family, and do you have enough support from people?
- Trauma avoidance: Do you wear seatbelts and helmets, and use car seats for children?
- Blood pressure: Have you had problems with high blood pressure at home or at doctor visits, or do you have any concerns about blood pressure treatment or getting a blood pressure cuff at home?
- Risks, genetic and metabolic factors: Do you have trouble controlling blood sugar or cholesterol? Is there a neurological disease that runs in your family?
- Affordability and adherence: Do you have any trouble with the cost of your medicines?
- Infection: Are you up to date on vaccines, and do you have enough information about those vaccines?
- Negative exposures: Do you smoke, drink more than one to two drinks per day, or use non-prescription drugs? Do you drink well water, or live in an area with known air or water pollution?
- Social and structural determinants of health: Do you have concerns about keeping housing, having transportation, having access to care and medical insurance, or being physically or emotionally safe from harm?
You will note that some of these are well-known (to 10almonds readers, at least!) risk factors for cognitive decline, but others are more about systemic and/or environmental considerations, things that don’t directly pertain to brain health, but can have a big impact on it anyway.
About “concerns”: in the case of those questions that ask “do you have concerns about…?”, and you’re not sure, then yes, you do indeed have concerns.
About “trouble”: as for these kinds of health-related questionnaires in general, if a question asks you “do you have trouble with…?” and your answer is something like “no, because I have a special way of dealing with that problem” then the answer for the purposes of the questionnaire is yes, you do indeed have trouble.
Note that you can “have trouble with” something that you simultaneously “have under control”—just as a person can have no trouble at all with something that they leave very much out of control.
Further explanation on each of the questions
If you’re wondering what is meant by any of these, or what counts, or why the question is even being asked, then we recommend you check out Dr. Selwa et al’s recently-published paper, then all is explained in there, in surprisingly easy-to-read fashion:
Emerging Issues In Neurology: The Neurologist’s Role in Promoting Brain Health
If you scroll past the abstract, introduction, and disclaimers, then you’ll be straight into the tables of information about the above 12 factors.
Want to be even more proactive?
Check out:
How To Reduce Your Alzheimer’s Risk
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Morning Routines That Just FLOW
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Morning Routines That Just FLOW
“If the hardest thing you have to do in your day is eat a frog, eat that frog first!”, they say.
And, broadly speaking, it is indeed good to get anything stressful out of the way early, so that we can relax afterwards. But…
- Are we truly best at frog-eating when blurry-eyed and sleepy?
- Is there a spoonful of sugar that could make the medicine go down better?
- What do we need to turn eating the frog into an enjoyable activity?
Flow
“Flow” is a concept brought to public consciousness by psychologist Mihaly Csikszentmihalyi, and it refers to a state in which we feel good about what we’re doing, and just keep doing, at a peak performance level.
Writer’s note: as a writer, for example…
Sometimes I do not want to write, I pace to and fro near my computer, going on side-quests like getting a coffee or gazing out of the window into my garden. But once I get going, suddenly, something magical happens and before I know it, I have to trim my writing down because I’ve written too much. That magical window of effortless productivity was a state of flow.
Good morning!
What is a good morning, to you? Build that into your morning! Set parameters around it so you don’t get carried away timewise and find yourself in the afternoon (unless that would work for you!), but first thing in the morning is the time to light up each part of your brain with appropriate neurotransmitters.
Getting the brain juices flowing
Cortisol
When we wake up, we (unless we have some neurochemical imbalance, such as untreated depression) get a spike of cortisol. Cortisol is much-maligned and feared, and indeed it can be very much deleterious to the health in cases of chronic stress. But a little spike now and again is actually beneficial for us.
Quick Tip: if you want to artificially stimulate (or enhance) a morning cortisol spike, a cold shower is the way to go. Or even just a face-plunge into a bowl of ice-water (put ice in it, give it a couple of minutes to chill the water, then put your face in for a count of 30 seconds, or less if you can’t hold your breath that long).
Serotonin
Serotonin is generally thought of as “the happy chemical”, and it’s stimulated by blue/white light, and also by seeing greenery.
Quick tip: to artificially stimulate (or enhance) a morning serotonin boost, your best friend is sunlight. Even sun through a partly-clouded sky will tend to outperform artificial lighting, including artificial sunlight lighting. Try to get sun between 08:30 and 09:00, if you can. Best of all, do it in your garden or nearby park, as the greenery will be an extra boost!
Dopamine
Generally thought of as “the reward chemical”, but it’s also critical for a lot of kinds of brainwork, including language processing and problem-solving.
Quick Tip: to artificially stimulate* a dopamine surge to get you going, do something that you and/or your body finds rewarding. Examples include:
- Exercise, especially in a vigorous burst
- A good breakfast, a nice coffee, whatever feels right to you
- An app that has motivational bells and whistles, a streak for you to complete, etc
Note: another very enjoyable activity might come to mind that doesn’t even require you getting out of bed. Be aware, however, gentleman-readers specifically, that if you complete that activity, you’ll get a prolactin spike that will wipe out the dopamine you just worked up (because prolactin is antagonistic to dopamine). So that one’s probably better for a lazy morning when you can go back to sleep, than a day when you want to get up and go! Ladies, this is less of a worry for us as the physiology an orgasm driven by estrogen+progesterone rather than testosterone is different; there will not usually be a prolactin spike following the spike of dopamine; our orgasm-related dopamine spike is followed by a wave of oxytocin instead (“the cuddle chemical”), which is much more pleasant than prolactin.
*there’s no “(or enhance)” for this one; you won’t get dopamine from doing nothing, that’s just not how “the reward chemical” works
Flow-building in a stack
When you’ve just woken up and are in a blurry morning haze, that’s not the time to be figuring out “what should I be doing next?”, so instead:
- Work out the things you want to incorporate into your morning routine
- Put them in the order that will be easiest to perform—some things will go a lot better after others!
- Remember to also include things that are simply necessary—morning bathroom ablutions, for example
The goal here is to have a this-and-this-and-this-and-this list of items that you can go through without any deviations, and get in the habit of “after item 1 I automatically do item 2, after which I automatically do item 3, after which…”
Implement this, and your mornings will become practically automated, but in a joyous, life-enhancing way that sets you up in good order for whatever you want/need to do!
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