Reflexology: What The Science Says
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How Does Reflexology Work, Really?
In Wednesday’s newsletter, we asked you for your opinion of reflexology, and got the above-depicted, below-described set of responses:
- About 63% said “It works by specific nerves connecting the feet and hands to various specific organs, triggering healing remotely”
- About 26% said “It works by realigning the body’s energies (e.g. qi, ki, prana, etc), removing blockages and improving health“
- About 11% said “It works by placebo, at best, and has no evidence for any efficacy beyond that”
So, what does the science say?
It works by realigning the body’s energies (e.g. qi, ki, prana, etc), removing blockages and improving health: True or False?
False, or since we can’t prove a negative: there is no reliable scientific evidence for this.
Further, there is no reliable scientific evidence for the existence of qi, ki, prana, soma, mana, or whatever we want to call it.
To save doubling up, we did discuss this in some more detail, exploring the notion of qi as bioelectrical energy, including a look at some unreliable clinical evidence for it (a study that used shoddy methodology, but it’s important to understand what they did wrong, to watch out for such), when we looked at [the legitimately very healthful practice of] qigong, a couple of weeks ago:
Qigong: A Breath Of Fresh Air?
As for reflexology specifically: in terms of blockages of qi causing disease (and thus being a putative therapeutic mechanism of action for attenuating disease), it’s an interesting hypothesis but in terms of scientific merit, it was pre-emptively supplanted by germ theory and other similarly observable-and-measurable phenomena.
We say “pre-emptively”, because despite orientalist marketing, unless we want to count some ancient pictures of people getting a foot massage and say it is reflexology, there is no record of reflexology being a thing before 1913 (and that was in the US, by a laryngologist working with a spiritualist to produce a book that they published in 1917).
It works by specific nerves connecting the feet and hands to various specific organs, triggering healing remotely: True or False?
False, or since we can’t prove a negative: there is no reliable scientific evidence for this.
A very large independent review of available scientific literature found the current medical consensus on reflexology is that:
- Reflexology is effective for: anxiety (but short lasting), edema, mild insomnia, quality of sleep, and relieving pain (short term: 2–3 hours)
- Reflexology is not effective for: inflammatory bowel disease, fertility treatment, neuropathy and polyneuropathy, acute low back pain, sub acute low back pain, chronic low back pain, radicular pain syndromes (including sciatica), post-operative low back pain, spinal stenosis, spinal fractures, sacroiliitis, spondylolisthesis, complex regional pain syndrome, trigger points / myofascial pain, chronic persistent pain, chronic low back pain, depression, work related injuries of the hip and pelvis
Source: Reflexology – a scientific literary review compilation
(the above is a fascinating read, by the way, and its 50 pages go into a lot more detail than we have room to here)
Now, those items that they found it effective for, looks suspiciously like a short list of things that placebo is often good for, and/or any relaxing activity.
Another review was not so generous:
❝The best evidence available to date does not demonstrate convincingly that reflexology is an effective treatment for any medical condition❞
~ Dr. Edzard Ernst (MD, PhD, FMedSci)
Source: Is reflexology an effective intervention? A systematic review of randomised controlled trials
In short, from the available scientific literature, we can surmise:
- Some researchers have found it to have some usefulness against chiefly psychosomatic conditions
- Other researchers have found the evidence for even that much to be uncompelling
It works by placebo, at best, and has no evidence for any efficacy beyond that: True or False?
Mostly True; of course reflexology runs into similar problems as acupuncture when it comes to testing against placebo:
How Does One Test Acupuncture Against Placebo Anyway?
…but not quite as bad, since it is easier to give a random foot massage while pretending it is a clinical treatment, than to fake putting needles into key locations.
However, as the paper we cited just above (in answer to the previous True/False question) shows, reflexology does not appear to meaningfully outperform placebo—which points to the possibility that it does work by placebo, and is just a placebo treatment on the high end of placebo (because the placebo effect is real, does work, isn’t “nothing”, and some placebos work better than others).
For more on the fascinating science and useful (applicable in daily life!) practicalities of how placebo does work, check out:
How To Leverage Placebo Effect For Yourself
Take care!
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Coca-Cola vs Diet Coke – Which is Healthier?
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Our Verdict
When comparing Coca-Cola to Diet Coke, we picked the Diet Coke.
Why?
While the Diet Coke is bad, the Coca-Cola has mostly the same problems plus sugar.
The sugar in a can of Coca-Cola is 39g high-fructose corn syrup (the worst kind of sugar yet known to humanity), and of course it’s being delivered in liquid form (the most bioavailable way to get, which in this case, is bad).
To put those 39g into perspective, the daily recommended amount of sugar is 36g for men or 25g for women, according to the AHA.
The sweetener in Diet Coke is aspartame, which has had a lot of health risk accusations made against it, most of which have not stood up to scrutiny, and the main risk it does have is “it mimics sugar too well” and it can increase cravings for sweetness, and therefore higher consumption of sugars in other products. For this reason, the World Health Organization has recommended to simply reduce sugar intake without looking to artificial sweeteners to help.
Nevertheless, aspartame has been found safe (in moderate doses; the upper tolerance level would equate to more than 20 cans of diet coke per day) by food safety agencies ranging from the FDA to the EFSA, based on a large body of science.
Other problems that Diet Coke has are present in Coca-Cola too, such as its acidic nature (bad for tooth enamel) and gassy nature (messes with leptin/ghrelin balance).
Summary: the Diet Coke is relatively less unhealthy, but is still bad in numerous ways, and remains best avoided.
Read more:
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52 Small Changes – by Brett Blumenthal
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We see a lot of books that exhort us to get a six-pack in a month, change our life in 7 days, learn Japanese in 24 hours. The reality is, things take time!
Brett Blumenthal is more realistic while being just as motivational:
The idea is simple… Make one small change per week for 52 weeks, and at the end of the year, you’ll be healthier and happier.
At 10almonds, we’re big fans of small changes that add up (or rather: compound!) to make big differences, so this one’s absolutely our style!
Best of all, she offers us not just “do this” advice, but also “and here’s the information and resources you’ll need to make this change work the best it can for you”
The advices range in topic from nutrition to exercise to sleep to mental wellness to interpersonal stuff and more. The biggest focus is on personal health, though, with small changes to exercise and nutrition making up the lion’s share of the changes.
Bottom line: this is a book you’ll want to grab once a week. Consider setting a reminder on your phone to check in with it each Sunday, for example!
Take the first step and order “52 Small Changes” from Amazon today!
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The Most Annoying Nutrition Tips (7 Things That Actually Work)
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You can’t out-exercise a bad diet, and getting a good diet can be a challenge depending on your starting point. Here’s Cori Lefkowith’s unglamorous seven-point plan:
Step by step
Seven things to do:
- Start tracking first: track your food intake (as it is, without changing anything) without judgment to identify realistic areas for improvement.
- Add protein: add 10g of protein to three meals daily to improve satiety, aid fat loss, and retain muscle.
- Fiber swaps: swap foods for higher-fiber options where possible to improve gut health, improve heart health, support fat loss, and promote satiety.
- Hydration: take your body weight in kilograms (or half your body weight in pounds), then get that many ounces of water daily to support metabolism and reduce cravings.
- Calorie swaps: replace or reduce calorie-dense foods to create a small, modestly sustainable calorie deficit. Your body will still adjust to this after a while; that’s fine; it’s about a gradual reduction.
- Tweak and adjust: regularly reassess and adjust your diet and habits to fit your lifestyle and progress.
- Guard against complacency: track consistently, and stay on course.
For more on all of these, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like:
The Smartest Way To Get To 20% Body Fat (Or 10% For Men)
Take care!
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Resveratrol & Healthy Aging
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Resveratrol & Healthy Aging
Resveratrol is the compound found in red grapes, and thus in red wine, that have resulted in red wine being sometimes touted as a heart-healthy drink.
However, at the levels contained in red wine, you’d need to drink 100–1000 glasses of wine per day (depending on the wine) to get the dose of resveratrol that was associated with heart health benefits in mouse studies.
Which also means: if you are not a mouse, you might need to drink even more than that!
Further reading: can we drink to good health?
Resveratrol supplementation
Happily, resveratrol supplements exist. But what does resveratrol do?
It lowers blood pressure:
Effect of resveratrol on blood pressure: a meta-analysis of randomized controlled trials
It improves blood lipid levels:
It improves insulin sensitivity:
It has neuroprotective effects too:
Resveratrol promotes clearance of Alzheimer’s disease amyloid-beta peptides
Is it safe?
For most people, it is generally recognized as safe. However, if you are on blood-thinners or otherwise have a bleeding disorder, you might want to skip it:
Antiplatelet activity of synthetic and natural resveratrol in red wine
You also might want to check with your pharmacist/doctor, if you’re on blood pressure meds, anxiety meds, or immunosuppressants, as it can increase the amount of these drugs that will then stay in your system:
Resveratrol modulates drug- and carcinogen-metabolizing enzymes in a healthy volunteer study
And as ever, of course, if unsure just check with your pharmacist/doctor, to be on the safe side.
Where to get it?
We don’t sell it, but here’s an example product on Amazon for your convenience
Enjoy!
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The Meds That Impair Decision-Making
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.
Impairment to cognitive function is often comorbid with Parkinson’s disease. That is to say: it’s not a symptom of Parkinson’s, but it often occurs in the same people. This may seem natural: after all, both are strongly associated with aging.
However, recent (last month, at time of writing) research has brought to light a very specific way in which medication for Parkinson’s may impair the ability to make sound decisions.
Obviously, this is a big deal, because it can affect healthcare decisions, financial decisions, and more—greatly impacting quality of life.
See also: Age-related differences in financial decision-making and social influence
(in which older people were found more likely to be influenced by the impulsive financial preferences of others than their younger counterparts, when other factors are controlled for)
As for how this pans out when it comes to Parkinson’s meds…
Pramipexole (PPX)
This drug can, due to an overlap in molecular shape, mimic dopamine in the brains of people who don’t have enough—such as those with Parkinson’s disease. This (as you might expect) helps alleviate Parkinson’s symptoms.
However, researchers found that mice treated with PPX and given a touch-screen based gambling game picked the high-risk, high reward option much more often. In the hopes of winning strawberry milkshake (the reward), they got themselves subjected to a lot of blindingly-bright flashing lights (the risk, to which untreated mice were much more averse, as this is very stressful for a mouse).
You may be wondering: did the mice have Parkinson’s?
The answer: kind of; they had been subjected to injections with 6-hydroxydopamine, which damages dopamine-producing neurons similarly to Parkinson’s.
This result was somewhat surprising, because one would expect that a mouse whose depleted dopamine was being mimicked by a stand-in (thus, doing much of the job of dopamine) would be less swayed by the allure of gambling (a high-dopamine activity), since gambling is typically most attractive to those who are desperate to find a crumb of dopamine somewhere.
They did find out why this happened, by the way, the PPX hyperactivated the external globus pallidus (also called GPe, and notwithstanding the name, this is located deep inside the brain). Chemically inhibiting this area of the brain reduced the risk-taking activity of the mice.
This has important implications for Parkinson’s patients, because:
- on an individual level, it means this is a side effect of PPX to be aware of
- on a research-and-development level, it means drugs need to be developed that specifically target the GPe, to avoid/mitigate this side effect.
You can read the study in full here:
Don’t want to get Parkinson’s in the first place?
While nothing is a magic bullet, there are things that can greatly increase or decrease Parkinson’s risk. Here’s a big one, as found recently (last week, at the time of writing):
Air Pollution and Parkinson’s Disease in a Population-Based Study
Also: knowing about its onset sooner rather than later is scary, but beneficial. So, with that in mind…
Recognize The Early Symptoms Of Parkinson’s Disease
Finally, because Parkinson’s disease is theorized to be caused by a dysfunction of alpha-synuclein clearance (much like the dysfunction of beta-amyloid clearance, in the case of Alzheimer’s disease), this means that having a healthy glymphatic system (glial cells doing the same clean-up job as the lymphatic system, but in the brain) is critical:
How To Clean Your Brain (Glymphatic Health Primer)
Take care!
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Mouthwatering Protein Falafel
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Baking falafel, rather than frying it, has a strength and a weakness. The strength: it is less effort and you can do more at once. The weakness: it can easily get dry. This recipe calls for baking them in a way that won’t get dry, and the secret is one of its protein ingredients: peas! Add to this the spices and a tahini sauce, and you’ve a mouthwatering feast that’s full of protein, fiber, polyphenols, and even healthy fats.
You will need
- 1 cup peas, cooked
- 1 can chickpeas, drained and rinsed (keep the chickpea water—also called aquafaba—aside, as we’ll be using some of it later)
- ½ small red onion, chopped
- 1 handful fresh mint, chopped
- 1 tbsp fresh parsley, chopped
- ½ bulb garlic, crushed
- 1 tbsp lemon juice
- 1 tbsp chickpea flour (also called gram flour, besan flour, or garbanzo bean flour) plus more for dusting
- 2 tsp red chili flakes (adjust per heat preferences)
- 2 tsp black pepper, coarse ground
- 1 tsp ground turmeric
- ½ tsp MSG or 1 tsp low-sodium salt
- Extra virgin olive oil
For the tahini sauce:
- 2 tbsp tahini
- 2 tbsp lemon juice
- ¼ bulb garlic, crushed
- 5 tbsp aquafaba (if for some reason you don’t have it, such as for example you substituted 1 cup chickpeas that you cooked yourself, substitute with water here)
To serve:
- Flatbreads (you can use our Healthy Homemade Flatbreads recipe if you like)
- Leafy salad
Method
(we suggest you read everything at least once before doing anything)
1) Preheat the oven to 350℉ / 180℃.
2) Blend the peas and chickpeas in a food processor for a few seconds. You want a coarse mixture, not a paste.
3) Add the rest of the main section ingredients except the olive oil, and blend again for a few more seconds. It should still have a chunky texture, or else you will have made hummus. If you accidentally make hummus, set your hummus aside and start again on the falafels.
4) Shape the mixture into balls; if it lacks structural integrity, fold in a little more chickpea flour until the balls stay in shape. Either way, once you have done that, dust the balls in chickpea flour.
5) Brush the balls in a little olive oil, as you put them on a baking tray lined with baking paper. Bake for 15–18 minutes until golden, turning partway through.
6) While you are waiting, making the tahini sauce by combining the tahini sauce ingredients in a high-speed blender and processing on high until smooth. If you do not have a small enough blender (a bullet-style blender should work for this), then do it manually, which means you’ll have to crush the garlic all the way into a smooth paste, such as with a pestle and mortar, or alternatively, use ready-made garlic paste—and then simply whisk the ingredients together until smooth.
7) Serve the falafels warm or cold, on flatbreads with leafy salad and the tahini sauce.
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- Tahini vs Hummus – Which is Healthier?
- Our Top 5 Spices: How Much Is Enough For Benefits? ← we scored 4/5 today!
Take care!
Don’t Forget…
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