The Dopa-Bean
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.
Mucuna pruriens, also called the “magic velvet bean”, is an established herbal drug used for the management of male infertility, nervous disorders, and also as an aphrodisiac:
The Magic Velvet Bean of Mucuna pruriens
How it works is more interesting than that, though.
It’s about the dopamine
M. pruriens contains levodopa (L-dopa). That’s right, the same as the dopaminergic medication most often prescribed for Parkinson’s disease. Furthermore, it might even be better than synthetic L-dopa, because:
❝M. pruriens seed extract demonstrated acetylcholinesterase inhibitory activity, while synthetic L-dopa enhanced the activity of the enzyme. It can be concluded that the administration of M. pruriens seed might be effective in protecting the brain against neurodegenerative disorders such as Parkinson’s and Alzheimer’s diseases.
M. pruriens seed extract containing L-dopa has shown less acetylcholinesterase activity stimulation compared with L-dopa, suggesting that the extract might have a superior benefit for use in the treatment of Parkinson’s disease.❞
~ Dr. Narisa Kamkaen et al.
Indeed, it has been tested specifically in (human!) Parkinson’s disease patients, which RCT found:
❝The rapid onset of action and longer on time without concomitant increase in dyskinesias on mucuna seed powder formulation suggest that this natural source of l-dopa might possess advantages over conventional l-dopa preparations in the long term management of Parkinson’s disease❞
~ Dr. Regina Katzenschlager et al.
Read more: Mucuna pruriens in Parkinson’s disease: a double-blind clinical and pharmacological study
Beyond Parkinson’s disease
M. pruriens has also been tested and found beneficial in cases of disease other than Parkinson’s, thus:
Mucuna pruriens in Parkinson’s and in some other diseases: recent advancement and future prospective
…but the science is less well-established for things not generally considered related to dopamine, such as cancer, diabetes, and cardiometabolic disorders.
Note, however, that the science for it being neuroprotective is rather stronger.
Against depression
Depression can have many causes, and (especially on a neurological level) diverse presentations. As such, sometimes what works for one person’s depression won’t touch another person’s, because the disease and treatment are about completely different neurotransmitter dysregulations. So, if a person’s depression is due to a shortage of serotonin, for example, then perking up the dopamine won’t help much, and vice versa. See also:
Antidepressants: Personalization Is Key!
When it comes to M. pruriens and antidepressant activity, then predictably it will be more likely to help if your depression is due to too little dopamine. Note that this means that even if your depression is dopamine-based, but the problem is with your dopamine receptors and not the actual levels of dopamine, then this may not help so much, depending on what else you have going on in there.
The science for M. pruriens and depression is young, and we only found non-human animal studies so far, for example:
In summary
It’s good against Parkinson’s in particular and is good against neurodegeneration in general.
It may be good against depression, depending on the kind of depression you have.
Is it safe?
That’s a great question! And the answer is: it depends. For most people, in moderation, it should be fine (but, see our usual legal/medical disclaimer). Definitely don’t take it if you have bipolar disorder or any kind of schizoid/psychotic disorder; it is likely to trigger a manic/psychotic episode if you do.
For more on this, we discussed it (pertaining to L-dopa in general, not M. pruriens specifically) at greater length here:
An Accessible New Development Against Alzheimer’s ← scroll down to the heading that reads “Is there a catch?”
Want to try some?
We don’t sell it, but here for your convenience is an example product on Amazon 😎
Enjoy!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Recommended
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Is stress turning my hair grey?
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.
When we start to go grey depends a lot on genetics.
Your first grey hairs usually appear anywhere between your twenties and fifties. For men, grey hairs normally start at the temples and sideburns. Women tend to start greying on the hairline, especially at the front.
The most rapid greying usually happens between ages 50 and 60. But does anything we do speed up the process? And is there anything we can do to slow it down?
You’ve probably heard that plucking, dyeing and stress can make your hair go grey – and that redheads don’t. Here’s what the science says.
Oksana Klymenko/Shutterstock What gives hair its colour?
Each strand of hair is produced by a hair follicle, a tunnel-like opening in your skin. Follicles contain two different kinds of stem cells:
- keratinocytes, which produce keratin, the protein that makes and regenerates hair strands
- melanocytes, which produce melanin, the pigment that colours your hair and skin.
There are two main types of melanin that determine hair colour. Eumelanin is a black-brown pigment and pheomelanin is a red-yellow pigment.
The amount of the different pigments determines hair colour. Black and brown hair has mostly eumelanin, red hair has the most pheomelanin, and blonde hair has just a small amount of both.
So what makes our hair turn grey?
As we age, it’s normal for cells to become less active. In the hair follicle, this means stem cells produce less melanin – turning our hair grey – and less keratin, causing hair thinning and loss.
As less melanin is produced, there is less pigment to give the hair its colour. Grey hair has very little melanin, while white hair has none left.
Unpigmented hair looks grey, white or silver because light reflects off the keratin, which is pale yellow.
Grey hair is thicker, coarser and stiffer than hair with pigment. This is because the shape of the hair follicle becomes irregular as the stem cells change with age.
Interestingly, grey hair also grows faster than pigmented hair, but it uses more energy in the process.
Can stress turn our hair grey?
Yes, stress can cause your hair to turn grey. This happens when oxidative stress damages hair follicles and stem cells and stops them producing melanin.
Oxidative stress is an imbalance of too many damaging free radical chemicals and not enough protective antioxidant chemicals in the body. It can be caused by psychological or emotional stress as well as autoimmune diseases.
Environmental factors such as exposure to UV and pollution, as well as smoking and some drugs, can also play a role.
Melanocytes are more susceptible to damage than keratinocytes because of the complex steps in melanin production. This explains why ageing and stress usually cause hair greying before hair loss.
Scientists have been able to link less pigmented sections of a hair strand to stressful events in a person’s life. In younger people, whose stems cells still produced melanin, colour returned to the hair after the stressful event passed.
4 popular ideas about grey hair – and what science says
1. Does plucking a grey hair make more grow back in its place?
No. When you pluck a hair, you might notice a small bulb at the end that was attached to your scalp. This is the root. It grows from the hair follicle.
Plucking a hair pulls the root out of the follicle. But the follicle itself is the opening in your skin and can’t be plucked out. Each hair follicle can only grow a single hair.
It’s possible frequent plucking could make your hair grey earlier, if the cells that produce melanin are damaged or exhausted from too much regrowth.
2. Can my hair can turn grey overnight?
Legend says Marie Antoinette’s hair went completely white the night before the French queen faced the guillotine – but this is a myth.
It is not possible for hair to turn grey overnight, as in the legend about Marie Antoinette. Yann Caradec/Wikimedia, CC BY-NC-SA Melanin in hair strands is chemically stable, meaning it can’t transform instantly.
Acute psychological stress does rapidly deplete melanocyte stem cells in mice. But the effect doesn’t show up immediately. Instead, grey hair becomes visible as the strand grows – at a rate of about 1 cm per month.
Not all hair is in the growing phase at any one time, meaning it can’t all go grey at the same time.
3. Will dyeing make my hair go grey faster?
This depends on the dye.
Temporary and semi-permanent dyes should not cause early greying because they just coat the hair strand without changing its structure. But permanent products cause a chemical reaction with the hair, using an oxidising agent such as hydrogen peroxide.
Accumulation of hydrogen peroxide and other hair dye chemicals in the hair follicle can damage melanocytes and keratinocytes, which can cause greying and hair loss.
4. Is it true redheads don’t go grey?
People with red hair also lose melanin as they age, but differently to those with black or brown hair.
This is because the red-yellow and black-brown pigments are chemically different.
Producing the brown-black pigment eumelanin is more complex and takes more energy, making it more susceptible to damage.
Producing the red-yellow pigment (pheomelanin) causes less oxidative stress, and is more simple. This means it is easier for stem cells to continue to produce pheomelanin, even as they reduce their activity with ageing.
With ageing, red hair tends to fade into strawberry blonde and silvery-white. Grey colour is due to less eumelanin activity, so is more common in those with black and brown hair.
Your genetics determine when you’ll start going grey. But you may be able to avoid premature greying by staying healthy, reducing stress and avoiding smoking, too much alcohol and UV exposure.
Eating a healthy diet may also help because vitamin B12, copper, iron, calcium and zinc all influence melanin production and hair pigmentation.
Theresa Larkin, Associate Professor of Medical Sciences, University of Wollongong
This article is republished from The Conversation under a Creative Commons license. Read the original article.
Share This Post
-
The Modern Art and Science of Mobility – by Aurélien Broussal-Derval
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’ve reviewed mobility books before, so what makes this one stand out?
We’ll be honest: the illustrations are lovely.
The science, the information, the exercises, the routines, the programs… All these things are excellent too, but these can be found in many a book.
What can’t usually be found is very beautiful (yet no less clear) watercolor paintings and charcoal sketches as anatomical illustrations.
There are photos too (also of high quality), but the artistry of the paintings and sketches is what makes the reader want to spend time perusing the books.
At least, that’s what this reviewer found! Because it’s all very well having access to a lot of information (and indeed, I read so much), but making it enjoyable increases the chances of rereading it much more often.
As for the rest of the content, the book’s information is divided in categories:
- Pain (what causes it, what it means, and how to manage it)
- Breathing (yes, a whole section devoted to this, and it is aligned heavily to posture also, as well as psychological state and the effect of stress on tension, inflammation, and more)
- Movement (this is mostly about kinds of movement and ranges of movement)
- Mobility (this is about aggregating movements as a fully mobile human)
So, each builds on from the previous because any pain needs addressing before anything else, breathing (and with it, posture) comes next, then we learn about movement, then we bring it all together for mobility.
Bottom line: this is a beautiful and comprehensive book that will make learning a joy
Click here to check out The Modern Art and Science of Mobility, and learn and thrive!
Share This Post
-
Spoon-Fed – by Dr. Tim Spector
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.
Dr. Spector looks at widespread beliefs about food, and where those often scientifically disproven beliefs come from. Hint, there’s usually some manner of “follow the money”.
From calorie-counting to cholesterol content, from fish to bottled water, to why of all the people who self-report having an allergy, only around half turn out to actually have one when tested, Dr. Spector sets the record straight.
The style is as very down-to-earth and not at all self-aggrandizing; the author acknowledges his own mistakes and limitations along the way. In terms of pushing any particular agenda, his only agenda is clear: inform the public about bad science, so that we demand better science going forwards. Along the way, he gives us lots of information that can inform our personal health choices based on better science than indiscriminate headlines wildly (and sometimes intentionally) misinterpreting results.
Read this book, and you may find yourself clicking through to read the studies for yourself, next time you see a bold headline.
Bottom line: this book looks at a lot of what’s wrong with what a lot of people believe about healthy eating. Regular 10almonds readers might not find a lot that’s new here, but it could be a great gift for a would-be health-conscious friend or relative
Share This Post
Related Posts
-
I’ve been given opioids after surgery to take at home. What do I need to know?
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.
Opioids are commonly prescribed when you’re discharged from hospital after surgery to help manage pain at home.
These strong painkillers may have unwanted side effects or harms, such as constipation, drowsiness or the risk of dependence.
However, there are steps you can take to minimise those harms and use opioids more safely as you recover from surgery.
Flystock/Shutterstock Which types of opioids are most common?
The most commonly prescribed opioids after surgery in Australia are oxycodone (brand names include Endone, OxyNorm) and tapentadol (Palexia).
In fact, about half of new oxycodone prescriptions in Australia occur after a recent hospital visit.
Most commonly, people will be given immediate-release opioids for their pain. These are quick-acting and are used to manage short-term pain.
Because they work quickly, their dose can be easily adjusted to manage current pain levels. Your doctor will provide instructions on how to adjust the dosage based on your pain levels.
Then there are slow-release opioids, which are specially formulated to slowly release the dose over about half to a full day. These may have “sustained-release”, “controlled-release” or “extended-release” on the box.
Slow-release formulations are primarily used for chronic or long-term pain. The slow-release form means the medicine does not have to be taken as often. However, it takes longer to have an effect compared with immediate-release, so it is not commonly used after surgery.
Controlling your pain after surgery is important. This allows you get up and start moving sooner, and recover faster. Moving around sooner after surgery prevents muscle wasting and harms associated with immobility, such as bed sores and blood clots.
Everyone’s pain levels and needs for pain medicines are different. Pain levels also decrease as your surgical wound heals, so you may need to take less of your medicine as you recover.
But there are also risks
As mentioned above, side effects of opioids include constipation and feeling drowsy or nauseous. The drowsiness can also make you more likely to fall over.
Opioids prescribed to manage pain at home after surgery are usually prescribed for short-term use.
But up to one in ten Australians still take them up to four months after surgery. One study found people didn’t know how to safely stop taking opioids.
Such long-term opioid use may lead to dependence and overdose. It can also reduce the medicine’s effectiveness. That’s because your body becomes used to the opioid and needs more of it to have the same effect.
Dependency and side effects are also more common with slow-release opioids than immediate-release opioids. This is because people are usually on slow-release opioids for longer.
Then there are concerns about “leftover” opioids. One study found 40% of participants were prescribed more than twice the amount they needed.
This results in unused opioids at home, which can be dangerous to the person and their family. Storing leftover opioids at home increases the risk of taking too much, sharing with others inappropriately, and using without doctor supervision.
Don’t stockpile your leftover opioids in your medicine cupboard. Take them to your pharmacy for safe disposal. Archer Photo/Shutterstock How to mimimise the risks
Before using opioids, speak to your doctor or pharmacist about using over-the-counter pain medicines such as paracetamol or anti-inflammatories such as ibuprofen (for example, Nurofen, Brufen) or diclofenac (for example, Voltaren, Fenac).
These can be quite effective at controlling pain and will lessen your need for opioids. They can often be used instead of opioids, but in some cases a combination of both is needed.
Other techniques to manage pain include physiotherapy, exercise, heat packs or ice packs. Speak to your doctor or pharmacist to discuss which techniques would benefit you the most.
However, if you do need opioids, there are some ways to make sure you use them safely and effectively:
- ask for immediate-release rather than slow-release opioids to lower your risk of side effects
- do not drink alcohol or take sleeping tablets while on opioids. This can increase any drowsiness, and lead to reduced alertness and slower breathing
- as you may be at higher risk of falls, remove trip hazards from your home and make sure you can safely get up off the sofa or bed and to the bathroom or kitchen
- before starting opioids, have a plan in place with your doctor or pharmacist about how and when to stop taking them. Opioids after surgery are ideally taken at the lowest possible dose for the shortest length of time.
A heat pack may help with pain relief, so you end up using fewer painkillers. New Africa/Shutterstock If you’re concerned about side effects
If you are concerned about side effects while taking opioids, speak to your pharmacist or doctor. Side effects include:
- constipation – your pharmacist will be able to give you lifestyle advice and recommend laxatives
- drowsiness – do not drive or operate heavy machinery. If you’re trying to stay awake during the day, but keep falling asleep, your dose may be too high and you should contact your doctor
- weakness and slowed breathing – this may be a sign of a more serious side effect such as respiratory depression which requires medical attention. Contact your doctor immediately.
If you’re having trouble stopping opioids
Talk to your doctor or pharmacist if you’re having trouble stopping opioids. They can give you alternatives to manage the pain and provide advice on gradually lowering your dose.
You may experience withdrawal effects, such as agitation, anxiety and insomnia, but your doctor and pharmacist can help you manage these.
How about leftover opioids?
After you have finished using opioids, take any leftovers to your local pharmacy to dispose of them safely, free of charge.
Do not share opioids with others and keep them away from others in the house who do not need them, as opioids can cause unintended harms if not used under the supervision of a medical professional. This could include accidental ingestion by children.
For more information, speak to your pharmacist or doctor. Choosing Wisely Australia also has free online information about managing pain and opioid medicines.
Katelyn Jauregui, PhD Candidate and Clinical Pharmacist, School of Pharmacy, Faculty of Medicine and Health, University of Sydney; Asad Patanwala, Professor, Sydney School of Pharmacy, University of Sydney; Jonathan Penm, Senior lecturer, School of Pharmacy, University of Sydney, and Shania Liu, Postdoctoral Research Fellow, Faculty of Medicine and Dentistry, University of Alberta
This article is republished from The Conversation under a Creative Commons license. Read the original article.
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Burn! How To Boost Your Metabolism
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.
Let’s burn! Metabolic tweaks and hacks
Our metabolism is, for as long as we live, a constantly moving thing. And it’s not a monolith either; there are parts of our metabolism that can speed up or slow down independently of others.
If we talk about metabolism without clarifying context, though, this is usually about one’s “basal metabolic rate”, that is, how many calories we burn just by being alive.
Why do we want to speed it up? Might we ever want to slow it down?
We might want to slow our metabolism down in survival circumstances, but generally speaking, a faster metabolism is a better one.
Yes, even when it comes to aging. Because although metabolism comes with metabolizing oxygen (which, ironically, tends to kill us eventually, since this is a key part of cellular aging), it is still beneficial to replace cells sooner rather than later. The later we replace a given cell (ie, the longer the cell lives), the more damaged it gets, and then the copy is damaged from the start, because the damage was copied along with it. So, best to have a fast metabolism to replace cells quickly when they are young and healthy.
A quick metabolism helps the body to do this.
Most people, of course, are interested in a fast metabolism to burn off fat, but beware: if you increase your metabolism without consideration to how and when you consume calories, you will simply end up eating more to compensate.
One final quick note before we begin:
Limitations
There’s a lot we can do to change our metabolism, but there are some things that may be outside of our control. They include:
- Age—we can influence our biological age, but we cannot (yet!) halt aging, so this will happen
- Body size—and yes we can change this a bit, but we all have our own “basic frame” to work with. Someone who is 6’6” is never going to be able to have the same lower-end-of-scale body mass of someone who is 5’0”, say.
- Sex—this is about hormones, and HRT is a thing, but for example, broadly speaking, men will have faster metabolisms than women, because of hormonal differences.
- Medical conditions—often also related to other hormones, but for example someone with Type 1 Diabetes is going to have a very different relationship with their metabolism than someone without, and someone with a hypo- or hyperactive thyroid will again have a very different metabolism in a way that that lifestyle factors can’t completely compensate for.
The tips and tricks
Intermittent fasting
Intermittent fasting has been found to, amongst other things, promote healthy apoptosis and autophagy (in other words: early programmed cell death and recycling—these are good things).
It also has anti-inflammatory benefits and decreases the risk of insulin resistance. In other words, intermittent fasting boosts the metabolism while simultaneously guarding against some of the dangers of a faster metabolism (harms you’d get if you instead increased your metabolism by doing intense exercise and then eating a mountain of convenience food to compensate)
Read the science: Intermittent Fasting: Is the Wait Worth the Weight?
Read our prior article: Fasting Without Crashing? We Sort The Science From The Hype
Enjoy plenty of protein
This one won’t speed your metabolism up, so much as help it avoid slowing down as a result of fat loss.
Because of our body’s marvelous homeostatic system trying to keep our body from changing status at any given time, often when we lose fat, our body drops our metabolism to compensate, thinking we are in an ongoing survival situation and food is scarce so we’d better conserve energy (as fat). That’s a pain for would-be weight-loss dieters!
Eating protein can let our body know that we’re perfectly safe and not starving, so it will keep the metabolism ticking over nicely, without putting on fat.
Read the science: The role of protein in weight loss and maintenance
Stay hydrated
People think of drinking water as part of a weight loss program being just about filling oneself up, and that is a thing, but it also has a role to play in our metabolism. Specifically, lipolysis (the process of removing fat).
Because, we are mostly water. Not only is it the main content of our various body tissue cells, but also, of particular note, our blood (the means by which everything is transported around our body) is mostly water, too.
It’s hard for the body to keep everything ticking over like a well-oiled machine if its means of transportation is sluggish!
Check it out: Increased Hydration Can Be Associated with Weight Loss
Take a stand
That basal metabolic rate we talked about?
- If you’re lying down at rest, that’s what your metabolism will be like.
- If you’re sitting up, it’ll be a little quicker, but not much.
- If you’re standing, suddenly half your body is doing things, and you don’t even notice them because they’re just stabilizing muscles and the like, but on a cellular level, your body gets very busy.
Read all about it: Cardiometabolic impact of changing sitting, standing, and stepping in the workplace
Time to invest in a standing desk? Or a treadmill in front of the TV?
The spice of life
Capsaicin, the compound in many kinds of pepper that give them their spicy flavor, boosts the metabolism. In the words of Tremblay et al for the International Journal of Obesity:
❝[Capsaicin] stimulates the sympathoadrenal system that mediates the thermogenic and anorexigenic effects of capsaicinoids.
Capsaicinoids have been found to accentuate the impact of caloric restriction on body weight loss.
Some studies have also shown that capsinoids increase energy expenditure.
Capsaicin supplementation attenuates or even prevents the increase in hunger and decrease in fullness as well as the decrease in energy expenditure and fat oxidation, which normally result from energy restriction❞
Read for yourself: Capsaicinoids: a spicy solution to the management of obesity?
You snooze, you lose (fat)
While exercising is generally touted as the road to weight loss, and certainly regular exercise does have a part to play, doing so without good rest will have bad results.
In fact, even if you’re not exercising, if you don’t get enough sleep your metabolism will get sluggish to try to slow you down and encourage you to sleep.
So, be proactive, and make getting enough good quality sleep a priority.
Eat for metabolic health
Aside from the chilli peppers we mentioned, there are other foods associated with good metabolic health. We don’t have room to go into the science of each of them here, but here’s a well-researched, well-sourced standalone article listing some top choices:
The 12 Best Foods to Boost Your Metabolism
Enjoy!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Fast-Pickled Cucumbers
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.
Pickled vegetables are great for the gut, and homemade is invariably better than store-bought. But if you don’t have pickling jars big enough for cucumbers, and don’t want to wait a couple of weeks for the results, here’s a great way to do it quickly and easily.
You will need
- 1 large cucumber, sliced
- 2 tbsp apple cider vinegar
- 1½ tbsp salt (do not omit or substitute)
- 3 cloves garlic, whole, peeled
- 3 large sprigs fresh dill
- 2 tsp whole black peppercorns
- ½ tsp crushed red pepper flakes
- 1 bay leaf
Method
(we suggest you read everything at least once before doing anything)
1) Mix the vinegar and salt with 1½ cups of water in a bowl.
2) Assemble the rest of the ingredients, except the cucumber, into a quart-size glass jar with an airtight lid.
3) Add the cucumber slices into the jar.
4) Add the pickling brine that you made, leaving ½” space at the top.
5) Close the lid, and shake well.
6) Refrigerate for 2 days, after which, serve at your leisure:
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- Making Friends With Your Gut (You Can Thank Us Later)
- Our Top 5 Spices: How Much Is Enough For Benefits? ← 3/5 of these spices are in this recipe!
Take care!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
