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
Take care!
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Elderhood – by Dr. Louise Aronson
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Where does “middle age” end, and “old age” begin? By the United States’ CDC’s categorization, human life involves:
- 17 stages of childhood, deemed 0–18
- 5 stages of adulthood, deemed 18–60
- 1 stage of elderhood, deemed 60+
Isn’t there something missing here? Do we just fall off some sort of conveyor belt on our sixtieth birthdays, into one big bucket marked “old”?
Yesterday you were 59 and enjoying your middle age; today you have, apparently, the same medical factors and care needs as a 114-year-old.
Dr. Louise Aronson, a geriatrician, notes however that medical science tends to underestimate the differences found in more advanced old age, and underresearch them. That elders consume half of a country’s medicines, but are not required to be included in clinical trials. That side effects not only are often different than for younger adults, but also can cause symptoms that are then dismissed as “Oh she’s just old”.
She explores, mostly through personal career anecdotes, the well-intentioned disregard that is frequently given by the medical profession, and—importantly—how we might overcome that, as individuals and as a society.
Bottom line: if you are over the age of 60, love someone over the age of 60, this is a book for you. Similarly if you and/or they plan to live past the age of 60, this is also a book for you.
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What You Don’t Know Can Kill You
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Knowledge Is Power!
This is Dr. Simran Malhotra. She’s triple board-certified (in lifestyle medicine, internal medicine, and palliative care), and is also a health and wellness coach.
What does she want us to know?
Three things:
Wellness starts with your mindset
Dr. Malhotra shifted her priorities a lot during the initial and perhaps most chaotic phase of the COVID pandemic:
❝My husband, a critical care physician, was consumed in the trenches of caring for COVID patients in the ICU. I found myself knee-deep in virtual meetings with families whose loved ones were dying of severe COVID-related illnesses. Between the two of us, we saw more trauma, suffering, and death, than we could have imagined.
The COVID-19 pandemic opened my eyes to how quickly life can change our plans and reinforced the importance of being mindful of each day. Harnessing the power to make informed decisions is important, but perhaps even more important is focusing on what is in our control and taking action, even if it is the tiniest step in the direction we want to go!❞
~ Dr. Simran Malhotra
We can only make informed decisions if we have good information. That’s one of the reasons we try to share as much information as we can each day at 10almonds! But a lot will always depend on personalized information.
There are one-off (and sometimes potentially life-saving) things like health genomics:
The Real Benefit Of Genetic Testing
…but also smaller things that are informative on an ongoing basis, such as keeping track of your weight, your blood pressure, your hormones, and other metrics. You can even get fancy:
Track Your Blood Sugars For Better Personalized Health
Lifestyle is medicine
It’s often said that “food is medicine”. But also, movement is medicine. Sleep is medicine. In short, your lifestyle is the most powerful medicine that has ever existed.
Lifestyle encompasses very many things, but fortunately, there’s an “80:20 rule” in play that simplifies it a lot because if you take care of the top few things, the rest will tend to look after themselves:
These Top Few Things Make The Biggest Difference To Overall Health
Gratitude is better than fear
If we receive an unfavorable diagnosis (and let’s face it, most diagnoses are unfavorable), it might not seem like something to be grateful for.
But it is, insofar as it allows us to then take action! The information itself is what gives us our best chance of staying safe. And if that’s not possible e.g. in the worst case scenario, a terminal diagnosis, (bearing in mind that one of Dr. Malhotra’s three board certifications is in palliative care, so she sees this a lot), it at least gives us the information that allows us to make the best use of whatever remains to us.
See also: Managing Your Mortality
Which is very important!
…and/but possibly not the cheeriest note on which to end, so when you’ve read that, let’s finish today’s main feature on a happier kind of gratitude:
How To Get Your Brain On A More Positive Track (Without Toxic Positivity)
Want to hear more from Dr. Malhotra?
Showing how serious she is about how our genes do not determine our destiny and knowledge is power, here she talks about her “previvor’s journey”, as she puts it, with regard to why she decided to have preventative cancer surgery in light of discovering her BRCA1 genetic mutation:
Click Here If The Embedded Video Doesn’t Load Automatically
Take care!
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Somatic Exercises For Nervous System Regulation – by Rose Kilian
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We’ve written before about the vagus nerve, its importance, and how to make use of it, but it’s easy to let it slip from one’s mind when it comes to exercises. This book fixes that!
The promised 35 exercises are quite a range, and are organized into sections:
- Revitalizing through breath
- Stress and tension release
- Spinal and postural health
- Mindfulness and grounding
- Movements for flexibility
- Graceful balance and focus
While it’s not necessary to do all 35 exercises, it’s recommended to do at least some from each section, to “cover one’s bases”, and enjoy the best of all worlds.
The exercises are drawn from many sources, but tai chi and yoga are certainly the most well-represented. Others, meanwhile, are straight from physiotherapy or are things one might expect to be advised at a neurology consultation.
Bottom line: if you’d like to take better care of your vagus nerve, the better for it to take care of you, this book can certainly help with that.
Click here to check out Somatic Exercises For Nervous System Regulation, and take care of yourself!
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Taking A Trip Through The Evidence On Psychedelics
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In Tuesday’s newsletter, we asked you for your opinions on the medicinal use of psychedelics, and got the above-depicted, below-described, set of responses:
- 32% said “This is a good, evidence-based way to treat many brain disorders”
- 32% said “There are some benefits, but they don’t outweigh the risks”
- 20% said “This can help a select few people only; useless for the majority”
- 16% said “This is hippie hogwash and hearsay; wishful thinking at best”
Quite a spread of answers, so what does the science say?
This is hippie hogwash and hearsay; wishful thinking at best! True or False?
False! We’re tackling this one first, because it’s easiest to answer:
There are some moderately-well established [usually moderate] clinical benefits from some psychedelics for some people.
If that sounds like a very guarded statement, it is. Part of this is because “psychedelics” is an umbrella term; perhaps we should have conducted separate polls for psilocybin, MDMA, ayahuasca, LSD, ibogaine, etc, etc.
In fact: maybe we will do separate main features for some of these, as there is a lot to say about each of them separately.
Nevertheless, looking at the spread of research as it stands for psychedelics as a category, the answers are often similar across the board, even when the benefits/risks may differ from drug to drug.
To speak in broad terms, if we were to make a research summary for each drug it would look approximately like this in each case:
- there has been research into this, but not nearly enough, as “the war on drugs” may well have manifestly been lost (the winner of the war being: drugs; still around and more plentiful than ever), but it did really cramp science for a few decades.
- the studies are often small, heterogenous (often using moderately wealthy white student-age population samples), and with a low standard of evidence (i.e. the methodology often has some holes that leave room for reasonable doubt).
- the benefits recorded are often small and transient.
- in their favor, though, the risks are also generally recorded as being quite low, assuming proper safe administration*.
*Illustrative example:
Person A takes MDMA in a club, dances their cares away, has had only alcohol to drink, sweats buckets but they don’t care because they love everyone and they see how we’re all one really and it all makes sense to them and then they pass out from heat exhaustion and dehydration and suffer kidney damage (not to mention a head injury when falling) and are hospitalized and could die;
Person B takes MDMA in a lab, is overwhelmed with a sense of joy and the clarity of how their participation in the study is helping humanity; they want to hug the researcher and express their gratitude; the researcher reminds them to drink some water.
Which is not to say that a lab is the only safe manner of administration; there are many possible setups for supervised usage sites. But it does mean that the risks are often as much environmental as they are risks inherent to the drug itself.
Others are more inherent to the drug itself, such as adverse cardiac events for some drugs (ibogaine is one that definitely needs medical supervision, for example).
For those who’d like to see numbers and clinical examples of the bullet points we gave above, here you go; this is a great (and very readable) overview:
NIH | Evidence Brief: Psychedelic Medications for Mental Health and Substance Use Disorders
Notwithstanding the word “brief” (intended in the sense of: briefing), this is not especially brief and is rather an entire book (available for free, right there!), but we do recommend reading it if you have time.
This can help a select few people only; useless for the majority: True or False?
True, technically, insofar as the evidence points to these drugs being useful for such things as depression, anxiety, PTSD, addiction, etc, and estimates of people who struggle with mental health issues in general is often cited as being 1 in 4, or 1 in 5. Of course, many people may just have moderate anxiety, or a transient period of depression, etc; many, meanwhile, have it worth.
In short: there is a very large minority of people who suffer from mental health issues that, for each issue, there may be one or more psychedelic that could help.
This is a good, evidence-based way to treat many brain disorders: True or False?
True if and only if we’re willing to accept the so far weak evidence that we discussed above. False otherwise, while the jury remains out.
One thing in its favor though is that while the evidence is weak, it’s not contradictory, insofar as the large preponderance of evidence says such therapies probably do work (there aren’t many studies that returned negative results); the evidence is just weak.
When a thousand scientists say “we’re not completely sure, but this looks like it helps; we need to do more research”, then it’s good to believe them on all counts—the positivity and the uncertainty.
This is a very different picture than we saw when looking at, say, ear candling or homeopathy (things that the evidence says simply do not work).
We haven’t been linking individual studies so far, because that book we linked above has many, and the number of studies we’d have to list would be:
n = number of kinds of psychedelic drugs x number of conditions to be treated
e.g. how does psilocybin fare for depression, eating disorders, anxiety, addiction, PTSD, this, that, the other; now how does ayahuasca fare for each of those, and so on for each drug and condition; at least 25 or 30 as a baseline number, and we don’t have that room.
But here are a few samples to finish up:
- Psilocybin as a New Approach to Treat Depression and Anxiety in the Context of Life-Threatening Diseases—A Systematic Review and Meta-Analysis of Clinical Trials
- Therapeutic Use of LSD in Psychiatry: A Systematic Review of Randomized-Controlled Clinical Trials
- Efficacy of Psychoactive Drugs for the Treatment of Posttraumatic Stress Disorder: A Systematic Review of MDMA, Ketamine, LSD and Psilocybin
- Changes in self-rumination and self-compassion mediate the effect of psychedelic experiences on decreases in depression, anxiety, and stress.
- Psychedelic Treatments for Psychiatric Disorders: A Systematic Review and Thematic Synthesis of Patient Experiences in Qualitative Studies
- Repeated lysergic acid diethylamide (LSD) reverses stress-induced anxiety-like behavior, cortical synaptogenesis deficits and serotonergic neurotransmission decline
In closing…
The general scientific consensus is presently “many of those drugs may ameliorate many of those conditions, but we need a lot more research before we can say for sure”.
On a practical level, an important take-away from this is twofold:
- drugs, even those popularly considered recreational, aren’t ontologically evil, generally do have putative merits, and have been subject to a lot of dramatization/sensationalization, especially by the US government in its famous war on drugs.
- drugs, even those popularly considered beneficial and potentially lifechangingly good, are still capable of doing great harm if mismanaged, so if putting aside “don’t do drugs” as a propaganda of the past, then please do still hold onto “don’t do drugs alone”; trained professional supervision is a must for safety.
Take care!
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Turns out the viral ‘Sleepy Girl Mocktail’ is backed by science. Should you try it?
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Many of us wish we could get a better night’s sleep. Wouldn’t it be great if it was as easy as a mocktail before bed?
That’s what the latest viral trend might have us believe. The “Sleepy Girl Mocktail” is a mix of tart cherry juice, powdered magnesium supplement and soda water. TikTok videos featuring the concoction have garnered hundreds of thousands of views. But, what does the science say? Do these ingredients actually help us sleep?
Tart cherry juice
There is research to show including tart cherry juice in your diet improves overall sleep. Clinical trials show tart cherry juice increases sleep quality and quantity, as well as a lessening insomnia symptoms (compared to a placebo). This could be due to the presence of melatonin, a sleep-promoting hormone, in cherries.
Tart cherry varieties such as Jerte Valley or Montmorency have the highest concentration of melatonin (approximately 0.135 micrograms of melatonin per 100g of cherry juice). Over the counter melatonin supplements can range from 0.5 milligram to over 100 milligrams, with research suggesting those beginning to take melatonin start with a dose of 0.5–2 milligrams to see an improvement in sleep.
Melatonin naturally occurs in our bodies. Our body clock promotes the release of melatonin in the evening to help us sleep, specifically in the two hours before our natural bedtime.
If we want to increase our melatonin intake with external sources, such as cherries, then we should be timing our intake with our natural increase in melatonin. Supplementing melatonin too close to bed will mean we may not get the sleep-promoting benefits in time to get off to sleep easily. Taking melatonin too late may even harm our long-term sleep health by sending the message to our body clock to delay the release of melatonin until later in the evening.
Magnesium – but how much?
Magnesium also works to promote melatonin, and magnesium supplements have been shown to improve sleep outcomes.
However, results vary depending on the amount of magnesium people take. And we don’t yet have the answers on the best dose of magnesium for sleep benefits.
We do know magnesium plays a vital role in energy production and bone development, making it an important daily nutrient for our diets. Foods rich in magnesium include wheat cereal or bread, almonds, cashews, pumpkin seeds, spinach, artichokes, green beans, soy milk and dark chocolate.
Bubbly water
Soda water serves as the base of the drink, rather than a pathway to better sleep. And bubbly water may make the mix more palatable. It is important to keep in mind that drinking fluids close to bedtime can be disruptive to our sleep as it might lead to waking during the night to urinate.
Healthy sleep recommendations include avoiding water intake in the two hours before bed. Having carbonated beverages too close to bed can also trigger digestive symptoms such as bloating, gassiness and reflux during the night.
Bottoms up?
Overall, there is evidence to support trying out the Sleepy Girl Mocktail to see if it improves sleep, however there are some key things to remember:
timing: to get the benefits of this drink, avoid having it too close to bed. Aim to have it two hours before your usual bedtime and avoid fluids after this time
consistency: no drink is going to be an immediate cure for poor sleep. However, this recipe could help promote sleep if used strategically (at the right time) and consistently as part of a balanced diet. It may also introduce a calming evening routine that helps your brain relax and signals it’s time for bed
- maximum magnesium: be mindful of the amount of magnesium you are consuming. While there are many health benefits to magnesium, the recommended daily maximum amounts are 420mg for adult males and 320mg for adult females. Exceeding the maximum can lead to low blood pressure, respiratory distress, stomach problems, muscle weakness and mood problems
sugar: in some of the TikTok recipes sugar (as flavoured sodas, syrups or lollies) is added to the drink. While this may help hide the taste of the tart cherry juice, the consumption of sugar too close to bed may make it more difficult to get to sleep. And sugar in the evening raises blood sugar levels at a time when our body is not primed to be processing sugar. Long term, this can increase our risk of diabetes
sleep environment: follow good sleep hygiene practices including keeping a consistent bedtime and wake time, a wind-down routine before bed, avoiding electronic device use like phones or laptops in bed, and avoiding bright light in the evening. Bright light works to suppress our melatonin levels in the evening and make us more alert.
What about other drinks?
Other common evening beverages include herbal tisanes or teas, hot chocolate, or warm milk.
Milk can be especially beneficial for sleep, as it contains the amino acid tryptophan, which can promote melatonin production. Again, it is important to also consider the timing of these drinks and to avoid any caffeine in tea and too much chocolate too close to bedtime, as this can make us more alert rather than sleepy.
Getting enough sleep is crucial to our health and wellbeing. If you have tried multiple strategies to improve your sleep and things are not getting better, it may be time to seek professional advice, such as from a GP.
Charlotte Gupta, Postdoctoral research fellow, CQUniversity Australia
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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America’s Health System Isn’t Ready for the Surge of Seniors With Disabilities
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The number of older adults with disabilities — difficulty with walking, seeing, hearing, memory, cognition, or performing daily tasks such as bathing or using the bathroom — will soar in the decades ahead, as baby boomers enter their 70s, 80s, and 90s.
But the health care system isn’t ready to address their needs.
That became painfully obvious during the covid-19 pandemic, when older adults with disabilities had trouble getting treatments and hundreds of thousands died. Now, the Department of Health and Human Services and the National Institutes of Health are targeting some failures that led to those problems.
One initiative strengthens access to medical treatments, equipment, and web-based programs for people with disabilities. The other recognizes that people with disabilities, including older adults, are a separate population with special health concerns that need more research and attention.
Lisa Iezzoni, 69, a professor at Harvard Medical School who has lived with multiple sclerosis since her early 20s and is widely considered the godmother of research on disability, called the developments “an important attempt to make health care more equitable for people with disabilities.”
“For too long, medical providers have failed to address change in society, changes in technology, and changes in the kind of assistance that people need,” she said.
Among Iezzoni’s notable findings published in recent years:
Most doctors are biased. In survey results published in 2021, 82% of physicians admitted they believed people with significant disabilities have a worse quality of life than those without impairments. Only 57% said they welcomed disabled patients.
“It’s shocking that so many physicians say they don’t want to care for these patients,” said Eric Campbell, a co-author of the study and professor of medicine at the University of Colorado.
While the findings apply to disabled people of all ages, a larger proportion of older adults live with disabilities than younger age groups. About one-third of people 65 and older — nearly 19 million seniors — have a disability, according to the Institute on Disability at the University of New Hampshire.
Doctors don’t understand their responsibilities. In 2022, Iezzoni, Campbell, and colleagues reported that 36% of physicians had little to no knowledge of their responsibilities under the 1990 Americans With Disabilities Act, indicating a concerning lack of training. The ADA requires medical practices to provide equal access to people with disabilities and accommodate disability-related needs.
Among the practical consequences: Few clinics have height-adjustable tables or mechanical lifts that enable people who are frail or use wheelchairs to receive thorough medical examinations. Only a small number have scales to weigh patients in wheelchairs. And most diagnostic imaging equipment can’t be used by people with serious mobility limitations.
Iezzoni has experienced these issues directly. She relies on a wheelchair and can’t transfer to a fixed-height exam table. She told me she hasn’t been weighed in years.
Among the medical consequences: People with disabilities receive less preventive care and suffer from poorer health than other people, as well as more coexisting medical conditions. Physicians too often rely on incomplete information in making recommendations. There are more barriers to treatment and patients are less satisfied with the care they do get.
Egregiously, during the pandemic, when crisis standards of care were developed, people with disabilities and older adults were deemed low priorities. These standards were meant to ration care, when necessary, given shortages of respirators and other potentially lifesaving interventions.
There’s no starker example of the deleterious confluence of bias against seniors and people with disabilities. Unfortunately, older adults with disabilities routinely encounter these twinned types of discrimination when seeking medical care.
Such discrimination would be explicitly banned under a rule proposed by HHS in September. For the first time in 50 years, it would update Section 504 of the Rehabilitation Act of 1973, a landmark statute that helped establish civil rights for people with disabilities.
The new rule sets specific, enforceable standards for accessible equipment, including exam tables, scales, and diagnostic equipment. And it requires that electronic medical records, medical apps, and websites be made usable for people with various impairments and prohibits treatment policies based on stereotypes about people with disabilities, such as covid-era crisis standards of care.
“This will make a really big difference to disabled people of all ages, especially older adults,” said Alison Barkoff, who heads the HHS Administration for Community Living. She expects the rule to be finalized this year, with provisions related to medical equipment going into effect in 2026. Medical providers will bear extra costs associated with compliance.
Also in September, NIH designated people with disabilities as a population with health disparities that deserves further attention. This makes a new funding stream available and “should spur data collection that allows us to look with greater precision at the barriers and structural issues that have held people with disabilities back,” said Bonnielin Swenor, director of the Johns Hopkins University Disability Health Research Center.
One important barrier for older adults: Unlike younger adults with disabilities, many seniors with impairments don’t identify themselves as disabled.
“Before my mom died in October 2019, she became blind from macular degeneration and deaf from hereditary hearing loss. But she would never say she was disabled,” Iezzoni said.
Similarly, older adults who can’t walk after a stroke or because of severe osteoarthritis generally think of themselves as having a medical condition, not a disability.
Meanwhile, seniors haven’t been well integrated into the disability rights movement, which has been led by young and middle-aged adults. They typically don’t join disability-oriented communities that offer support from people with similar experiences. And they don’t ask for accommodations they might be entitled to under the ADA or the 1973 Rehabilitation Act.
Many seniors don’t even realize they have rights under these laws, Swenor said. “We need to think more inclusively about people with disabilities and ensure that older adults are fully included at this really important moment of change.”
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism. Learn more about KFF.
Subscribe to KFF Health News’ free Morning Briefing.
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