
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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To Nap Or Not To Nap; That Is The Question
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It’s Q&A Day at 10almonds!
Have a question or a request? We love to hear from you!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
❝Is it good to nap in the afternoon, or better to get the famous 7 to 9 hours at night and leave it at that? I’m worried that daytime napping to make up for a shorter night’s sleep will just perpetuate and worsen it in the long run, is there a categorical answer here?❞
Generally considered best is indeed the 7–9 hours at night (yes, including at older ages):
Why You Probably Need More Sleep
…and sleep efficiency does matter too:
Why 7 Hours Sleep Is Not Enough
…which in turn, is influenced by factors other than just length and depth:
The 6 Dimensions Of Sleep (And Why They Matter)
However! Knowing what is best in theory does not help at all if it’s unattainable in practice. So, if you’re not getting a good night’s sleep (and we’ll assume you’re already practising good sleep hygiene; fresh bedding, lights-off by a certain time, no alcohol or caffeine before bed, that kind of thing), then a first port-of-call may be sleep remedies:
Safe Effective Sleep Aids For Seniors
If even those don’t work, then napping is now likely your best back-up option. But, napping done incorrectly can indeed cause as many problems as it solves. There’s a difference between:
- “I napped and now I have energy again” and you continue with your day
- “Darkness took me, and I strayed out of thought and time. Stars wheeled overhead, and every day was as long as the life age of the earth—but it was not the end.” and now you’re not sure whether it’s day or night, whose house you’re in, or whether you’ve been drugged.
These two very common napping experiences are influenced by factors that we can control:
How To Nap Like A Pro (No More “Sleep Hangovers”!)
If you still prefer to not risk napping but do need at least some kind of refreshment that’s actually a refreshment and not just taking stimulants, then you might consider this practice (from yoga nidra) that gives some of the same benefits of sleep, without actually sleeping:
Non-Sleep Deep Rest: A Neurobiologist’s Insights
Take care!
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Time Smart – by Dr. Ashley Whillans
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First, what this is not: it’s not a productivity book.
What is rather: a book of better wellbeing.
There is a little overlap, insofar as getting “time smart” in the ways that Dr. Whillans recommends will give you more ability to also be more productive—if that’s what you want.
She talks us through time traps and the “time poverty epidemic”, as well as steps to finding time and funding time. Perhaps most critical idea-wise is the chapter on building a “time-affluence habit”, making decisions that prioritize your time-freedom where you can—which in turn will allow you to build yet more. Kind of like compound interest really, but for time.
The writing style is a conversational tone, but peppered with bullet-point lists and charts and the like from time to time, and often with citations to back up claims. It makes for a very readable book, and yet one that’s also inspiring of the confidence that it’s more than just one person’s opinion.
Bottom line: if you sometimes feel like you could do everything you want to if you could just find the time, this book can help you get there.
Click here to check out Time Smart, and live your most satisfying life!
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10 Ways To Balance Blood Sugars
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“Let Them Eat Cake”, She Said…
This is Jessie Inchauspé, a French biochemist and author. She’s most known for her best-selling “Glucose Revolution: The Life-Changing Power Of Balancing Your Blood Sugar”.
It’s a great book (which we reviewed recently) and you absolutely should read it, but meanwhile, we’re going to distill at least the most critical core ideas, 10almonds style. In this case, her “ten hacks”:
Eat foods in the right order
The order is:
- Fiber first
- Protein and fat second
- Starches and sugars last
What happens here is… the fiber perks up the gut bacteria, the protein and fat will then be better-digested next, and the starches and sugars will try to jump the line, but they can’t because the fiber is a physical speedbump and the proteins and fats are taking the prime place for being digested. So instead, the starches and sugars—usually responsible for blood sugar spikes—get processed much more gradually, resulting in a nice even curve.
Add a green starter to all your meals
We know what you’re thinking: “that’s just the first one again”, but no. This is an extra starter, before you get to that. If you’re the cook of the household, this can absolutely simply mean snacking on green ingredients while cooking.
Stop counting calories
Especially, she advises: stop worrying about extra calories from fats, such as if doing an oil-and-vinegar dressing for salad—which she also recommends, because all three components (the oil, the vinegar, and the salad) help even out blood sugar levels.
Flatten your breakfast curve
For many, breakfast is the starchiest meal of the day, if not the sugariest. Inchauspé recommends flipping this (ideally) or softening it (if you really must have a carb-based breakfast):
- Top choices include: a warm vegetable salad, fish, or eggs (or tofu if you don’t do animal products).
- Next-best include: if you must have toast, make sure to have butter (and/or the aforementioned egg/tofu, for example) to give your digestion an extra thing to do.
- Also: she recommends skipping the juice in favour of home-made breakfast smoothies. That way, instead of basically just sugar with some vitamins, you’re getting a range of nutrients that, if you stack it right, can constitute a balanced meal itself, with fiber + protein + fat + carbs.
Have any type of sugar—they’re all the same
They’re technically not, but the point is that your body will immediately take them apart and then they will be just the same. Whether it’s the cheapest white sugar or the most expensive organic lovingly hand-reared free-range agave nectar, your body is going to immediately give it the chop-shop treatment (a process so quick as to be practically instantaneous) and say “this is now glucose”.
Pick a dessert over a sweet snack
Remember that about the right order for foods? A dessert, when your body is already digesting dinner, is going to make much less of a glucose spike than, say, a blueberry muffin when all you’ve had this morning is coffee and juice.
Reach for the vinegar before you eat
We recently did a whole main feature about this, so we’ll not double up today!
After you eat, move
The glucose you eat will be used to replace lost muscle glycogen, before any left over is stored as fat… and, while it’s waiting to be stored as fat, just sitting in your bloodstream being high blood sugars. So, this whole thing will go a lot better if you are actively using muscle glycogen (by moving your body).
Inchauspé gives a metaphor: imagine a steam train worker, shoveling coal into the furnace. Meanwhile, other workers are bringing more coal. If the train is moving quickly, the coal can be shoveled into the furnace and burned and won’t build up so quickly. But if the train is moving slowly or not at all, that coal is just going to build up and build up, until the worker can shovel no more because of being neck-deep in coal.
Same with your blood sugars!
If you want to snack, go low-sugar
In the category of advice that will shock nobody: sugary snacks aren’t good for avoiding blood sugar spikes! This one probably didn’t need a chapter devoted to it, but anyway: low sugar is indeed the way to go for snacks.
Put some clothes on your carbs
This is about olive oil on pasta, butter on potatoes, and so forth. Basically, anything starchy is going to be broken down quickly to sugar and sent straight into the bloodstream, if there’s nothing to slow it down. If you’re wondering what to do with rice: adding a tablespoon of chia seeds to the rice while cooking (so they’re cooked together) will add very healthy fats to your rice, and (because they’ve been cooked) will not seem like eating seeds, by the way. In terms of texture and appearance, it’ll be as though you threw some black pepper in*
*which you should also do for many reasons, but that’s beyond the scope of this “about blood sugars” feature!
Wanting to know more about the science of this?
We’ve done all we have room for here today, but Inchauspé is, as ever, happy to explain it herself:
Prefer text? Check out:
The Science Behind Glucose GoddessShare This Post
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PlantYou: Scrappy Cooking – by Carleigh Bodrug
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This is a book that took “whole foods plant-based diet” and ran with it.
“Whole foods”, you say? Carleigh Bodrug has you covered in this guide to using pretty much everything.
One of the greatest strengths of the book is its “Got this? Make that” section, for using up those odds and ends that you’d normally toss.
You may be thinking: “ok, but if to use this unusual ingredient I have to buy four other ingredients to make this recipe, generating waste from those other ingredients, then this was a bad idea”, but fear not.
Bodrug covers that too, and in many cases leftover “would get wasted” ingredients can get turned into stuff that can go into longer-term storage one way or another, to use at leisure.
Which also means that on the day “there’s nothing in the house to eat” and you don’t want to go grocery-shopping, or if some global disaster causes the supply lines to fail and the stores become empty (that could never happen though, right?), you will have the mystical ability to conjure a good meal out of assorted odds and ends that you stored because of this book.
Bottom line: if you love food and hate food waste, this is a great book for you.
Click here to check out Scrappy Cooking, and do domestic magic!
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Spark – by Dr. John Ratey
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
We all know that exercise is good for mental health as well as physical. So, what’s so revolutionary about this “revolutionary new science of exercise and the brain”?
A lot of it has to do with the specific neuroscience of how exercise has not only a mood-boosting effect (endorphins) and neuroprotective effect (helping to guard against cognitive decline), but also promotes neuroplasticity… e.g., the creation and strengthening of neural pathways, as well as boosting the structure of the brain in some parts such as the cerebellum.
The book also covers not just “exercise has these benefits”, but also the “how this works” of all kinds of brain benefits, including:
- against Alzheimer’s
- mitigating ADHD
- managing menopause
- dealing with addiction
…and more. And once we understand how something works, we’re far more likely to be motivated to actually do the kinds of exercises that give the specific benefits we want/need. Which is very much the important part!
In short: this book will tell you what you need to know to get you doing the exercises you need to enjoy those benefits—very much worth it!
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Hearing voices is common and can be distressing. Virtual reality might help us meet and ‘treat’ them
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Have you ever heard something that others cannot – such as your name being called? Hearing voices or other noises that aren’t there is very common. About 10% of people report experiencing auditory hallucinations at some point in their life.
The experience of hearing voices can be very different from person to person, and can change over time. They might be the voice of someone familiar or unknown. There might be many voices, or just one or two. They can be loud or quiet like a whisper.
For some people these experiences are positive. They might represent a spiritual or supernatural experience they welcome or a comforting presence. But for others these experiences are distressing. Voices can be intrusive, negative, critical or threatening. Difficult voices can make a person feel worried, frightened, embarrassed or frustrated. They can also make it hard to concentrate, be around other people and get in the way of day-to-day activities.
Although not everyone who hears voices has a mental health problem, these experiences are much more common in people who do. They have been considered a hallmark symptom of schizophrenia, which affects about 24 million people worldwide.
However, such experiences are also common in other mental health problems, particularly in mood- and trauma-related disorders (such as bipolar disorder or depression and post-traumatic stress disorder) where as many as half of people may experience them.
Rawpixel/Shutterstock Why do people hear voices?
It is unclear exactly why people hear voices but exposure to prolonged stress, trauma or depression can increase the chances.
Some research suggests people who hear voices might have brains that are “wired” differently, particularly between the hearing and speaking parts of the brain. This may mean parts of our inner speech can be experienced as external voices. So, having the thought “you are useless” when something goes wrong might be experienced as an external person speaking the words.
Other research suggests it may relate to how our brains use past experiences as a template to make sense of and make predictions about the world. Sometimes those templates can be so strong they lead to errors in how we experience what is going on around us, including hearing things our brain is “expecting” rather than what is really happening.
What is clear is that when people tell us they are hearing voices, they really are! Their brain perceives voice experiences as if someone were talking in the room. We could think of this “mistake” as working a bit like being susceptible to common optical tricks or visual illusions.
There may be differences in the brains of people who hear voices. Triff/Shutterstock Coping with hearing voices
When hearing voices is getting in the way of life, treatment guidelines recommend the use of medications. But roughly a third of people will experience ongoing distress. As such, treatment guidelines also recommend the use of psychological therapies such as cognitive behavioural therapy.
The next generation of psychological therapies are beginning to use digital technologies and virtual reality offers a promising new medium.
Avatar therapy allows a person to create a virtual representation of the voice or voices, which looks and sounds like what they are experiencing. This can help people regain power in the “relationship” as they interact with the voice character, supported by a therapist.
Jason’s experience
Aged 53, Jason (not his real name) had struggled with persistent voices since his early 20s. Antipsychotic medication had helped him to some extent over the years, but he was still living with distressing voices. Jason tried out avatar therapy as part of a research trial.
He was initially unable to stand up to the voices, but he slowly gained confidence and tested out different ways of responding to the avatar and voices with his therapist’s support.
Jason became more able to set boundaries, such as not listening to them for periods throughout the day. He also felt more able to challenge what they said and make his own choices.
Over a couple of months, Jason started to experience some breaks from the voices each day and his relationship with them started to change. They were no longer like bullies, but more like critical friends pointing out things he could consider or be aware of.
A screenshot from HekaVR, the software used in the Australian AMETHYST trial. HekaVR, CC BY-ND Gaining recognition
Following promising results overseas and its recommendation by the United Kingdom’s National Institute for Health and Care Excellence, our team has begun adapting the therapy for an Australian context.
We are trialling delivering avatar therapy from our specialist voices clinic via telehealth. We are also testing whether avatar therapy is more effective than the current standard therapy for hearing voices, based on cognitive behavioural therapy.
As only a minority of people with psychosis receive specialist psychological therapy for hearing voices, we hope our trial will support scaling up these new treatments to be available more routinely across the country.
We would like to acknowledge the advice and input of Dr Nadine Keen (consultant clinical psychologist at South London and Maudsley NHS Foundation Trust, UK) on this article.
Leila Jameel, Trial Co-ordinator and Research Therapist, Swinburne University of Technology; Imogen Bell, Senior Research Fellow and Psychologist, The University of Melbourne; Neil Thomas, Professor of Clinical Psychology, Swinburne University of Technology, and Rachel Brand, Senior Lecturer in Clinical Psychology, University of the Sunshine Coast
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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