Dioscorea Villosa: Hormones, Arthritis, & Skin
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On A Wild Yam Chase?
We recently came across a supplement blend that had wild yam extract as a minor ingredient. Our plucky (and usually very knowledgable) researcher had never heard of its use before, so she set about doing her thing. This is what she found…
What health claims are made?
Wild yam extract (Dioscorea villosa) is traditionally sold and used for:
- Balancing hormones
- Combating arthritis
- Anti-aging effects for the skin
Does it balance hormones?
First, as a quick catch-up, we’ll drop a previous article of ours for your convenience:
What Does “Balance Your Hormones” Even Mean?
We couldn’t find almost any studies into wild yam extract’s hormone-balancing effects, but we did find one study, and:
❝Symptom scores showed a minor effect of both placebo and active treatment on diurnal flushing number and severity and total non-flushing symptom scores, and on nocturnal sweating after placebo, but no statistical difference between placebo and active creams.
This study suggests that short-term treatment with topical wild yam extract in women suffering from menopausal symptoms is free of side-effects, but appears to have little effect on menopausal symptoms❞
…which is a very thorough, polite, sciencey way of saying “wow, this does so many different kinds of nothing”
On the one hand, this was a small study (n=23). On the other hand, it was also literally the only study we could find.
Does it combat arthritis?
Maybe! We again didn’t find much research into this but we did find two in vitro studies that suggests that diosgenin (which can be derived from wild yam extract) helps:
- Diosgenin inhibits IL-1β-induced expression of inflammatory mediators in human osteoarthritis chondrocytes
- Diosgenin, a plant steroid, induces apoptosis in human rheumatoid arthritis synoviocytes with cyclooxygenase-2 overexpression
And we also found a rodent study that found that wild yam extract specifically helped against “acetic acid-induced writhing and formalin-induced pain“, and put that down to anti-inflammatory properties:
So, none of these studies tell us much about whether it would be helpful for humans—with or without arthritis, and hopefully without “acetic acid-induced writhing and formalin-induced pain”.
However, they do suggest that it would be reasonable to test in humans next.
You might prefer:
- Tips For Avoiding/Managing Osteoarthritis
- Tips For Avoiding/Managing Rheumatoid Arthritis
- How to Prevent (or Reduce) Inflammation
Does it keep skin young?
Again, research is thin on the ground, but we did find some! A study with wild-yam-derived diosgenin found that it didn’t make anything worse, and otherwise performed a similar role to vitamin A:
Read: Novel effects of diosgenin on skin aging
That was on rats with breast cancer though, so its applicability to healthy humans may be tenuous (while in contrast, simply getting vitamin A instead is a known deal).
Summary
- Does it balance hormones? It probably does little to nothing in this regard
- Does it combat arthritis? It probably has anti-inflammatory effects, but we know of no studies in humans. There are much more well-established anti-inflammatories out there.
- Does it keep the skin young? We know that it performs a role similar to vitamin A for rats with breast cancer, and didn’t make anything worse for them. That’s the extent of what we know.
Where can I get some?
In the unlikely event that the above research review has inspired you with an urge to buy wild yam extract, here is an example product for your convenience.
Some final words…
If you are surprised that we’re really not making any effort to persuade you of its merits, please know that (outside of the clearly-marked sponsor section, which helps us keep the lights on, so please do visit those) we have no interest in selling you anything. We’re genuinely just here to inform 🙂
If you are wondering why we ran this article at all if the supplement has negligible merits, it’s because science is science, knowledge is knowledge, and knowing that something has negligible merit can be good knowledge to have!
Also, running articles like this from time to time helps you to know that when we do sing the praises of something, it’s with good reason
Take care!
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10,000 Steps, 30 Days, 4 Changes
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Ariel wasn’t the most active person, and took on a “30 day challenge” to do the commonly-prescribed 10,000 steps per day—without adjusting her diet or doing any other exercise. How much of a difference does it make, really?
Stepping onwards
The 4 main things that she found changed for her weren’t all what she expected:
- Weight loss yes, but only marginally: she lost 3 lbs in a month, which did nevertheless make a visible difference. We might hypothesize that part of the reason for the small weight loss and yet visible difference is that she gained a little muscle, and the weight loss was specifically shifting away from a cortisol-based fat distribution, to a more healthy fat distribution.
- Different eating habits: she felt less hungry and craved less sugar. This likely has less to do with calorie consumption, and more to do with better insulin signalling.
- Increased energy and improved mood: these are going together in one item, because she said “4 things”, but really they are two related things. So, consider one of them a bonus item! In any case, she felt more energized and productive, and less reliant on caffeine.
- Improved sleep: or rather, at first, disrupted sleep, and then slept better and stayed better. A good reminder that changes for the better don’t always feel better in the first instance!
To hear about it in her own words, and see the before and after pictures, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
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Broccoli vs Asparagus – Which is Healthier?
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Our Verdict
When comparing broccoli to asparagus, we picked the broccoli.
Why?
Both are great! But broccoli does distinguish itself:
In terms of macros, broccoli has slightly more protein, carbs, and fiber. The two vegetables have the same glycemic index. We’ll call this a slight win for broccoli based mainly on the higher fiber, but it’s not by a huge amount.
When it comes to vitamins, broccoli has more of vitamins B5, B6, B9, C, K, and choline, whereas asparagus has more of vitamins A, B1, B2, B3, and E. This would already be a 6:5 marginal win for broccoli, but it’s worth bearing in mind that broccoli’s margins are greater, especially with broccoli having around 15x the amount of vitamin C. So, a clear win for broccoli, respectable as asparagus may be.
In the category of minerals, broccoli has more calcium, magnesium, manganese, phosphorus, potassium, and selenium, while asparagus boasts more copper, iron, and zinc. A 6:3 win for broccoli here.
Both vegetables also contain generous amounts of antioxidant polyphenols and other beneficial phytochemicals, often a little different from each other, so that’s a case for enjoying both.
Still, if you’re going to pick just one, we recommend the broccoli!
Want to learn more?
You might like to read:
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Chatter – by Dr. Ethan Kross
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This book is about much more than just one’s internal monologue. It does tackle that, but also the many non-verbal rabbit-holes that our brains can easily disappear into.
The author is an experimental psychologist, and brings his professional knowledge and experience to bear on this problem—citing many studies, including his own studies from his own lab, in which he undertook to answer precisely the implicit questions of “How can I…” in terms of tackling these matters, from root anxiety (for example) to end-state executive dysfunction (for example).
The writing style isn’t dense science though, and is very approachable for all.
The greatest value in this book lies in its prescriptive element, that is to say, its advice, especially in the category of evidence-based things we can do to improve matters for ourselves; beyond generic things like “mindfulness-based stress reduction” to much more specific things like “observe yourself in the 3rd person for a moment” and “take a break to imagine looking back on this later” and “interrupt yourself with a brief manual task”. With these sorts of interventions and more, we can shift the voice in our head from critic to coach.
Bottom line: if you would like your brain to let you get on with the things you actually want to do instead of constantly sidetracking you, this is the book for you.
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Why does alcohol make my poo go weird?
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As we enter the festive season it’s a good time to think about what all those celebratory alcoholic drinks can do to your gut.
Alcohol can interfere with the time it takes for food to go through your gut (also known as the “transit time”). In particular, it can affect the muscles of the stomach and the small bowel (also known as the small intestine).
So, how and why does alcohol make your poos goes weird? Here’s what you need to know.
Diarrhoea and the ‘transit time’
Alcohol’s effect on stomach transit time depends on the alcohol concentration.
In general, alcoholic beverages such as whisky and vodka with high alcohol concentrations (above 15%) slow down the movement of food in the stomach.
Beverages with comparatively low alcohol concentrations (such as wine and beer) speed up the movement of food in the stomach.
These changes in gut transit explain why some people can get a sensation of fullness and abdominal discomfort when they drink vodka or whisky.
How long someone has been drinking a lot of alcohol can affect small bowel transit.
We know from experiments with rats that chronic use of alcohol accelerates the transit of food through the stomach and small bowel.
This shortened transit time through the small bowel also happens when humans drink a lot of alcohol, and is linked to diarrhoea.
Alcohol can also reduce the absorption of carbohydrates, proteins and fats in the duodenum (the first part of the small bowel).
Alcohol can lead to reduced absorption of xylose (a type of sugar). This means diarrhoea is more likely to occur in drinkers who also consume a lot of sugary foods such as sweets and sweetened juices.
Chronic alcohol use is also linked to:
- lactose intolerance
- overgrowth of small bowel bacteria and
- reduced absorption of fats from the pancreas not producing enough digestive enzymes.
This means chronic alcohol use may lead to diarrhoea and loose stools.
How might a night of heavy drinking affect your poos?
When rats are exposed to high doses of alcohol over a short period of time, it results in small bowel transit delay.
This suggests acute alcohol intake (such as an episode of binge drinking) is more likely to lead to constipation than diarrhoea.
This is backed up by recent research studying the effects of alcohol in 507 university students.
These students had their stools collected and analysed, and were asked to fill out a stool form questionnaire known as the Bristol Stool Chart.
The research found a heavy drinking episode was associated with harder, firm bowel motions.
In particular, those who consumed more alcohol had more Type 1 stools, which are separate hard lumps that look or feel a bit like nuts.
The researchers believed this acute alcohol intake results in small bowel transit delay; the food stayed for longer in the intestines, meaning more water was absorbed from the stool back into the body. This led to drier, harder stools.
Interestingly, the researchers also found there was more of a type of bacteria known as “Actinobacteria” in heavy drinkers than in non-drinkers.
This suggests bacteria may have a role to play in stool consistency.
But binge drinking doesn’t always lead to constipation. Binge drinking in patients with irritable bowel syndrom (IBS), for example, clearly leads to diarrhoea, nausea and abdominal pain.
What can I do about all this?
If you’re suffering from unwanted bowel motion changes after drinking, the most effective way to address this is to limit your alcohol intake.
Some alcoholic beverages may affect your bowel motions more than others. If you notice a pattern of troubling poos after drinking certain drinks, it may be sensible to cut back on those beverages.
If you tend to get diarrhoea after drinking, avoid mixing alcohol with caffeinated drinks. Caffeine is known to stimulate contractions of the colon and so could worsen diarrhoea.
If constipation after drinking is the problem, then staying hydrated is important. Drinking plenty of water before drinking alcohol (and having water in between drinks and after the party is over) can help reduce dehydration and constipation.
You should also eat before drinking alcohol, particularly protein and fibre-rich foods.
Food in the stomach can slow the absorption of alcohol and may help protect against the negative effects of alcohol on the gut lining.
Is it anything to worry about?
Changes in bowel motions after drinking are usually short term and, for the most part, resolve themselves pretty efficiently.
But if symptoms such as diarrhoea persist beyond a couple of days after stopping alcohol, it may signify other concerning issues such as an underlying gut disorder like inflammatory bowel disease.
Researchers have also linked alcohol consumption to the development of irritable bowel syndrome.
If problems persist or if there are alarming symptoms such as blood in your stool, seek medical advice from a general practitioner.
Vincent Ho, Associate Professor and clinical academic gastroenterologist, Western Sydney University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Oat Milk vs Almond Milk – Which is Healthier?
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Our Verdict
When comparing oat milk to almond milk, we picked the almond milk.
Why?
This one’s quite straightforward, and no, it’s not just our bias for almonds
Rather, almonds contain a lot more vitamins and minerals, all of which usually make it into the milk.
Oat milk is still a fine choice though, and has a very high soluble fiber content, which is great for your heart.
Just make sure you get versions without added sugar or other unpleasantries! You can always make your own at home, too.
You can read a bit more about the pros and cons of various plant milks here:
Enjoy!
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Do We Simply Not Care About Old People?
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The covid-19 pandemic would be a wake-up call for America, advocates for the elderly predicted: incontrovertible proof that the nation wasn’t doing enough to care for vulnerable older adults.
The death toll was shocking, as were reports of chaos in nursing homes and seniors suffering from isolation, depression, untreated illness, and neglect. Around 900,000 older adults have died of covid-19 to date, accounting for 3 of every 4 Americans who have perished in the pandemic.
But decisive actions that advocates had hoped for haven’t materialized. Today, most people — and government officials — appear to accept covid as a part of ordinary life. Many seniors at high risk aren’t getting antiviral therapies for covid, and most older adults in nursing homes aren’t getting updated vaccines. Efforts to strengthen care quality in nursing homes and assisted living centers have stalled amid debate over costs and the availability of staff. And only a small percentage of people are masking or taking other precautions in public despite a new wave of covid, flu, and respiratory syncytial virus infections hospitalizing and killing seniors.
In the last week of 2023 and the first two weeks of 2024 alone, 4,810 people 65 and older lost their lives to covid — a group that would fill more than 10 large airliners — according to data provided by the CDC. But the alarm that would attend plane crashes is notably absent. (During the same period, the flu killed an additional 1,201 seniors, and RSV killed 126.)
“It boggles my mind that there isn’t more outrage,” said Alice Bonner, 66, senior adviser for aging at the Institute for Healthcare Improvement. “I’m at the point where I want to say, ‘What the heck? Why aren’t people responding and doing more for older adults?’”
It’s a good question. Do we simply not care?
I put this big-picture question, which rarely gets asked amid debates over budgets and policies, to health care professionals, researchers, and policymakers who are older themselves and have spent many years working in the aging field. Here are some of their responses.
The pandemic made things worse. Prejudice against older adults is nothing new, but “it feels more intense, more hostile” now than previously, said Karl Pillemer, 69, a professor of psychology and gerontology at Cornell University.
“I think the pandemic helped reinforce images of older people as sick, frail, and isolated — as people who aren’t like the rest of us,” he said. “And human nature being what it is, we tend to like people who are similar to us and be less well disposed to ‘the others.’”
“A lot of us felt isolated and threatened during the pandemic. It made us sit there and think, ‘What I really care about is protecting myself, my wife, my brother, my kids, and screw everybody else,’” said W. Andrew Achenbaum, 76, the author of nine books on aging and a professor emeritus at Texas Medical Center in Houston.
In an environment of “us against them,” where everybody wants to blame somebody, Achenbaum continued, “who’s expendable? Older people who aren’t seen as productive, who consume resources believed to be in short supply. It’s really hard to give old people their due when you’re terrified about your own existence.”
Although covid continues to circulate, disproportionately affecting older adults, “people now think the crisis is over, and we have a deep desire to return to normal,” said Edwin Walker, 67, who leads the Administration on Aging at the Department of Health and Human Services. He spoke as an individual, not a government representative.
The upshot is “we didn’t learn the lessons we should have,” and the ageism that surfaced during the pandemic hasn’t abated, he observed.
Ageism is pervasive. “Everyone loves their own parents. But as a society, we don’t value older adults or the people who care for them,” said Robert Kramer, 74, co-founder and strategic adviser at the National Investment Center for Seniors Housing & Care.
Kramer thinks boomers are reaping what they have sown. “We have chased youth and glorified youth. When you spend billions of dollars trying to stay young, look young, act young, you build in an automatic fear and prejudice of the opposite.”
Combine the fear of diminishment, decline, and death that can accompany growing older with the trauma and fear that arose during the pandemic, and “I think covid has pushed us back in whatever progress we were making in addressing the needs of our rapidly aging society. It has further stigmatized aging,” said John Rowe, 79, professor of health policy and aging at Columbia University’s Mailman School of Public Health.
“The message to older adults is: ‘Your time has passed, give up your seat at the table, stop consuming resources, fall in line,’” said Anne Montgomery, 65, a health policy expert at the National Committee to Preserve Social Security and Medicare. She believes, however, that baby boomers can “rewrite and flip that script if we want to and if we work to change systems that embody the values of a deeply ageist society.”
Integration, not separation, is needed. The best way to overcome stigma is “to get to know the people you are stigmatizing,” said G. Allen Power, 70, a geriatrician and the chair in aging and dementia innovation at the Schlegel-University of Waterloo Research Institute for Aging in Canada. “But we separate ourselves from older people so we don’t have to think about our own aging and our own mortality.”
The solution: “We have to find ways to better integrate older adults in the community as opposed to moving them to campuses where they are apart from the rest of us,” Power said. “We need to stop seeing older people only through the lens of what services they might need and think instead of all they have to offer society.”
That point is a core precept of the National Academy of Medicine’s 2022 report Global Roadmap for Healthy Longevity. Older people are a “natural resource” who “make substantial contributions to their families and communities,” the report’s authors write in introducing their findings.
Those contributions include financial support to families, caregiving assistance, volunteering, and ongoing participation in the workforce, among other things.
“When older people thrive, all people thrive,” the report concludes.
Future generations will get their turn. That’s a message Kramer conveys in classes he teaches at the University of Southern California, Cornell, and other institutions. “You have far more at stake in changing the way we approach aging than I do,” he tells his students. “You are far more likely, statistically, to live past 100 than I am. If you don’t change society’s attitudes about aging, you will be condemned to lead the last third of your life in social, economic, and cultural irrelevance.”
As for himself and the baby boom generation, Kramer thinks it’s “too late” to effect the meaningful changes he hopes the future will bring.
“I suspect things for people in my generation could get a lot worse in the years ahead,” Pillemer said. “People are greatly underestimating what the cost of caring for the older population is going to be over the next 10 to 20 years, and I think that’s going to cause increased conflict.”
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.
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