The Eye Drops That Instantly Correct Myopia With Just One Drop
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These days, there are increasingly many ways to give our eyes medical attention. Laser surgery opened a lot of doors (not to mention cutting into the window to your soul and all that), and even that may be becoming obsolete as science marches on. That said, some methods still seem a little too exciting for complete comfort, such as: Laser Eye Surgery Without The Laser Or The Surgery! ← uses electrochemical corneal refraction to reshape it!
But what about eye drops? Taking them is not most people’s favorite hobby, but they can help with minor conditions; dry eyes being the most obvious. Yet even these being gradually sidelined as other technologies step forwards, for example: A New Free App Offers Relief For Dry Eyes (Yes, Really)
But they can do more complex things too, as we’ve written about before, such as: New Eye Drops vs Age-Related Macular Degeneration
So, what’s this about treating myopia with eye drops?
Let’s take a close-up look at the evidence
Researchers (Dr. Lisa Ostrin & Dr. Barsha Lal) investigated this, and found that a single low-dose atropine eye drop (0.01%–0.1%) caused significant improvements to pupil size and focusing ability that lasted at least 24 hours, while not changing eye length, retinal thickness, or choroidal thickness over that period (that’s good).
How they tested it: it was a small (n=20) randomized controlled trial (RCT), in which healthy adults (average age 25.5) received placebo or one of four atropine concentrations in one eye across five randomized, double-masked sessions, with measurements taken at baseline, 1 hour, and 24 hours.
The results, in numbers:
❝The superficial vascular plexus perfusion density in the 1.0–2.5 mm annulus showed significant decrease (P = 0.02) with time after atropine instillation, but not with concentration (P > 0.05); post hoc analysis showed significant decrease from baseline at 1 h (P = 0.03) compared to 24 h (P = 0.28)❞
In other words: it helps significantly, and quickly. However, the results are temporary, and meaning that while one drop per eye is sufficient to gain these changes for a day, it’d be necessary to take it again later to get the same effect again. On the other hand, the temporary nature of the effects does suggest a good safety profile.
Or as Dr. Ostrin herself put it:
❝Characterizing these short-term effects is important for a better understanding of the physiological responses to atropine in clinical and research settings.
By linking objective ocular responses with subjective visual experience, this work advances our understanding of how atropine works and supports more precise, evidence-based, and individualized approaches to myopia management❞
~ Dr. Lisa Ostrin, Professor of Optometry
You can read the paper in full, here: Short-term effects of atropine on the retina and choroid in young adults
Note: yes, “young adults” per the average age of 25.5 that we mentioned above, though there’s no reason to assume this won’t work similarly for older adults; that’s just the science that’s been done so far, and scientists like to claim only what they can be confident their study actually shows.
Not a fan of eye drops?
Well, first you might want to check out: Tips For Putting In Eye Drops (3 Techniques That Work!) ← this writer uses technique #3; how about you?
But if you want a no-med, entirely DIY approach to better eyesight, then do consider this highly recommendable book we reviewed a while back:
Vision for Life, Revised Edition: Ten Steps to Natural Eyesight Improvement – by Dr. Meir Schneider
Take care!
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Practical Optimism – by Dr. Sue Varma
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We’ve written before about how to get your brain onto a more positive track (without toxic positivity), but there’s a lot more to be said than we can fit into an article, so here’s a whole book packed full with usable advice.
The subtitle claims “the art, science, and practice of…”, but mostly it’s the science of. If there’s art to be found here, then this reviewer missed it, and as for the practice of, well, that’s down to the reader, of course.
However, it is easy to use the contents of this book to translate science into practice without difficulty.
If you’re a fan of acronyms, initialisms, and other mnemonics (such as the rhyming “Name, Claim, Tame, and Reframe”), then you’ll love this book as they come thick and fast throughout, and they contribute to the overall ease of application of the ideas within.
The writing style is conversational but with enough clinical content that one never forgets who is speaking—not in the egotistical way that some authors do, but rather, just, she has a lot of professional experience to share and it shows.
Bottom line: if you’d like to be more optimistic without delving into the delusional, this book can really help a lot with that (in measurable ways, no less!).
Click here to check out Practical Optimism, and brighten up your life!
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10 Skin Warning Signs You Should Never Ignore
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Do you have armpits? Don’t ignore them!
Heed the signs:
Without further ado, they are:
- Acanthosis nigricans: dark, velvety brown skin thickening on the neck, underarms, backs of the hands, or sides of the face can signal insulin resistance, prediabetes, or PMOS. The good news, however, is that despite common concerns of such, sudden widespread onset is rarely associated with cancer.
- Unexplained bruising: bruises appearing without remembered injury may be linked to platelet disorders, clotting disorders, vitamin deficiencies, liver disease, certain cancers, or medications such as blood thinners and corticosteroids; bruising accompanied by nosebleeds, bleeding gums, or large purple patches is especially concerning and merits medical attention.
- Yellowing of the skin or eyes: jaundice can indicate liver disease, bile duct obstruction, or increased breakdown of red blood cells; yellowing often appears under the tongue and inside the mouth before becoming obvious elsewhere. It’s worth knowing that unlike harmless carotene-related skin discoloration (i.e. you drank a lot of carrot juice and turned orange), jaundice also affects the eyes and mouth.
- Severe itching without a rash: persistent whole-body itching lasting more than six weeks with no visible rash can be associated with liver disease, kidney disease, thyroid disorders, iron deficiency, or cancers such as Hodgkin lymphoma. Itching triggered by showering is another warning sign.
- Thick, waxy, or tight skin: swollen, shiny, waxy skin on the shins may occur with Graves’ disease, while skin tightening on the fingers may suggest diabetes or Scleroderma, particularly when hand mobility becomes restricted.
- Butterfly rash on the face: a rash across the cheeks and nose that spares the folds beside the nose famously may indicate systemic lupus erythematosus, especially if it worsens with sun exposure and is accompanied by fatigue or joint pain.
- Dark streaks under the nails: a new dark band in a single nail, particularly one that widens, contains multiple colors, or extends onto the surrounding skin, can be a warning sign of melanoma and should be evaluated for such.
- Sudden hair shedding: rapid diffuse hair loss, known as telogen effluvium, often occurs about three months after a physical stressor and may be associated with thyroid disease, iron deficiency, infection, surgery, trauma, nutritional deficiencies, pregnancy, or rapid weight loss.
- Non-healing wounds or recurrent infections: cuts, scrapes, or ulcers that remain open for more than four weeks generally suggest poor circulation, vascular disease, diabetes, or impaired immune function.
- Yellow, thick, or crumbly nails: commonly caused by a fungal infection, but when accompanied by respiratory symptoms and leg swelling, they may indicate bigger problems and should be checked out.
For more on all of this plus visual illustrations, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like:
What Your Skin Texture Says About Your Health
Take care!
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Clams vs Oysters – Which is Healthier?
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Our Verdict
When comparing clams to oysters, we picked the clams.
Why?
Considering the macros first, clams have more than 2x the protein, while oysters have nearly 2x the fat, of which, a little over 5x the saturated fat. So, in all accounts, clam is the winner here.
In terms of vitamins, clams have more of vitamins A, B1, B2, B3, B5, B6, B7, B9, B12, and C, while oysters are not higher in any vitamins. Another win for clams.
The category of minerals is more balanced; clams are higher in manganese, phosphorus, potassium, and selenium, while oysters are higher in copper, iron, magnesium, and zinc. This makes for a 4:4 tie, though it’s worth noting that the margin of difference for zinc is very large, so that can be an argument for oysters.
Nevertheless, adding up the sections makes for a clear win for clams.
A quick aside on “are oysters an aphrodisiac?”:
That zinc content is probably largely responsible for oysters’ reputation as an aphrodisiac, and zinc is important in the synthesis of both estrogen and testosterone. However, as the synthesis is not instant, and those sex hormones rise most in the morning (around 8am to 9am), to enjoy aphrodisiac benefits it’d be more sensible, on a biochemical level, to eat oysters one day, and then have morning sex the next day when those hormones are peaking. That said, while testosterone is the main driver of male libido, progesterone is usually more relevant for women’s, and unlike estrogen, progesterone usually peaks around 10pm to 2am, and is uninfluenced by having just eaten oysters.
So, in what way, if any, could oysters be responsible for libido in women? Well, the zinc is still important in energy metabolism, so that’s a factor, and also, we might hypothesize that oysters’ high saturated fat and cholesterol content may increase blood pressure which, while not fabulous for the health in general, may be considered desirable in the bedroom since the clitoris is anatomically analogous to the penis, and—while estrogen vs testosterone makes differences to the nervous system down there that are beyond the scope of today’s article—also enjoys localized increased blood pressure (and thus, a flushing response and resultant engorgement) during arousal.
Want to learn more?
You might like to read:
Does Eating Shellfish Really Contribute To Gout? ← short answer is: it can if consumed frequently over a long period of time, but that risk factor is greatly overstated, compared to some other risk factors
Take care!
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The Dopamine Myth
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The Dopamine Myth
There’s a popular misconception that, since dopamine is heavily involved in addictions, it’s the cause.
We see this most often in the context of non-chemical addictions, such as:
- gambling
- videogames
- social media
And yes, those things will promote dopamine production, and yes, that will feel good. But dopamine isn’t the problem.
Myth: The Dopamine Detox
There’s a trend we’ve mentioned before (it got a video segment a few Fridays back) about the idea of a “dopamine detox“, and how unscientific the idea is.
For a start…
- You cannot detox from dopamine, because dopamine is not a toxin
- You cannot abstain from dopamine, because your brain regulates your dopamine levels to keep them correct*
- If you could abstain from dopamine (and did), you would die, horribly.
*unless you have a serious mental illness, for example:
- forms of schizophrenia and/or psychosis that involve too much dopamine, or
- forms of depression and/or neurodegenerative diseases such as Parkinson’s (and several kinds of dementia) in which you have too little dopamine
- bipolar disorder in which dopamine levels can swing too far each way
See also: Dopamine fasting: misunderstanding science spawns a maladaptive fad
Myth: Dopamine is all about pleasure
Dopamine is a pleasure-giving neurotransmitter, but it serves more purposes than that! It also plays a central role in many neurological processes, including:
- Motivation
- Learning and memory
- Motor functions
- Language faculties
- Linear task processing
Note for example how someone taking dopaminergic drugs (prescription or otherwise; could be anything from modafinil to cocaine) is not blissed out… They’re probably in a good mood, sure, but they’re focused, organized, quick-thinking, and so forth! This is not an ad for cocaine; cocaine is very bad for the health. But you see the features? So, what if we could have a little more dopamine… healthily?
Dopamine—à la carte
Let’s look at the examples we gave earlier of non-chemical addictions that are dopaminergic in nature:
- gambling
- videogames
- social media
They’re not actually that rewarding, are they?
- Gamblers lose more than they win
- Gamers cease to care about a game once they have won
- Social media more often results in “doomscrolling”
This is because what prompts the most dopamine is actually the anticipation of reward… not the thing itself, whose reward-pleasure is very fleeting. Nobody looks back at an hour of doomscrolling and thinks “well, that was fun; I’m glad I did that”.
See the science: Liking, Wanting and the Incentive-Sensitization Theory of Addiction
But what if we anticipated a reward from things that are not deleterious to health and productivity? Things that are neutral, or even good for us?
Examples of this include:
- Sex! (remember though, it’s not a race to the finish-line)
- Good, nourishing food (bonus: some foods boost dopamine production nutritionally)
- Exercise/sport (also prompts release of endorphins, win/win!)
- Gamified learning apps (e.g. Duolingo)
- Gamified health/productivity apps (anything with bells and whistles and things that go “ding” and measure streaks etc)
Want to know more?
That’s all we have time for today, but you might want to check out:
10 Best Ways to Increase Dopamine Levels Naturally ← Science-based and well-sourced article!
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Ashwagandha: The Root of All Even-Mindedness?
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Ashwagandha: The Root Of All Even-Mindedness?
In the past few years, Ashwagandha root has been enjoying popular use in consumer products ranging from specialist nootropic supplement stacks, to supermarket teas and hot chocolates.
This herb is considered to have a calming effect, but the science goes a lot deeper than that. Let’s take a look!
Last summer, a systematic review was conducted, that asked the question:
Does Ashwagandha supplementation have a beneficial effect on the management of anxiety and stress?
They broadly found the answer was “yes”, although they mentioned in the first line of their abstract, without showing, that it was partially in response to contradictory evidence previously. We (10almonds) were not able to find any contradictory evidence, and their own full article had been made inaccessible to the public, so we couldn’t double-check theirs.
We promptly did our own research review, and we found many studies this year supporting Ashwaghanda’s use for the management of anxiety and stress, amongst other benefits.
First, know: Ashwagandha’s scientific name is “Withania somnifera”, so if you see that (or a derivative of it) mentioned in a paper or extract, it’s the same thing.
Onto the benefits…
A study from the same summer investigated “the efficacy of Withania somnifera supplementation on adults’ cognition and mood”, and declared that:
“in conclusion, Ashwagandha supplementation may improve the physiological, cognitive, and psychological effects of stress.”
We notice the legalistic “may improve”, but the data itself seems more compelling than that, because the study showed that it in fact “did improve” those things. Specifically, Ashwagandha out-performed placebo in most things they measured, and most (statistically) significantly, reduced cortisol output measurably. Cortisol, for any unfamiliar, is “the stress hormone”.
Another study that looked into its anti-stress properties is this one:
Ashwagandha Modulates Stress, Sleep Dynamics, and Mental Clarity
This study showed that Ashwagandha significantly outperformed placebo in many ways, including:
- sleep quality
- cognitive function
- energy, and
- perceptions of stress management.
Ashwagandha is popular among students, because it alleviates stress while also promising benefits to memory, attention, and thinking. So, this study on students caught our eye:
Their findings demonstrated that Ashwagandha increased college students’ perceived well-being through supporting sustained energy, heightened mental clarity, and enhanced sleep quality.
That was about perceived well-being and based on self-reports, though
So: what about hard science?
A later study (in September) found supplementation with 400 mg of Ashwagandha improved executive function, helped sustain attention, and increased short-term/working memory.
Read the study: Effects of Acute Ashwagandha Ingestion on Cognitive Function
❝But aside from the benefits regarding stress, anxiety, sleep quality, cognitive function, energy levels, attention, executive function, and memory, what has Ashwagandha ever done for us?❞
Well, there have been studies investigating its worth against depression, like this one:
Can Traditional Treatment Such as Ashwagandha Be Beneficial in Treating Depression?
Their broad answer: Ashwagandha works against depression, but they don’t know how it works.
They did add: “Studies also show that ashwagandha may bolster the immune system, increase stamina, fight inflammation and infection, combat tumors*, reduce stress, revive the libido, protect the liver and soothe jangled nerves.
That’s quite a lot, including a lot of physical benefits we’ve not explored in this research review which was more about Ashwagandha’s use as a nootropic!
We’ve been focusing on the more mainstream, well-studied benefits, but for any interested in Ashwagandha’s anti-cancer potential, here’s an example:
Evaluating anticancer properties of [Ashwagandha Extract]-a potent phytochemical
In summary:
There is a huge weight of evidence (of which we’ve barely skimmed the surface here in this newsletter, but there’s only so much we can include, so we try to whittle it down to the highest quality most recent most relevant research) to indicate that Ashwagandha is effective…
- Against stress
- Against anxiety
- Against depression
- For sleep quality
- For memory (working, short-term, and long-term)
- For mental clarity
- For attention
- For stamina
- For energy levels
- For libido
- For immune response
- Against inflammation
- Against cancer
- And more*
*(seriously, this is not hyperbole… We didn’t even look at its liver-protective functions, for instance)
Bottom line:
You’d probably like some Ashwagandha now, right? We know we would.
We don’t sell it (or anything else, for that matter), but happily the Internet does:
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Semaglutide’s Surprisingly Unexamined Effects
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Semaglutide’s Surprisingly Big Research Gap
GLP-1 receptor agonists like Ozempic, Wegovy, and other semaglutide drugs. are fast becoming a health industry standard go-to tool in the weight loss toolbox. When it comes to recommending that patients lose weight, “Have you considered Ozempic?” is the common refrain.
Sometimes, this may be a mere case of kicking the can down the road with regard to some other treatment that it can be argued (sometimes even truthfully) would go better after some weight loss:
How weight bias in health care can harm patients with obesity: Research
…which we also covered in fewer words in the second-to-last item here:
But GLP-1 agonists work, right?
Yes, albeit there’s a litany of caveats, top of which are usually:
- there are often adverse gastrointestinal side effects
- if you stop taking them, weight regain generally ensues promptly
For more details on these and more, see:
…but now there’s another thing that’s come to light:
The dark side of semaglutide’s weight loss
In academia, “dark” is often used to describe “stuff we don’t have much (or in some cases, any) direct empirical evidence of, but for reasons of surrounding things, we know it’s there”.
Well-known examples include “dark matter” in physics and the Dark Ages in (European) history.
In the case of semaglutide and weight loss, a review by a team of researchers (Drs. Sandra Christenen, Katie Robinson, Sara Thomas, and Dominique Williams) has discovered how little research has been done into a certain aspect of GLP-1 agonist’s weight loss effects, namely…
Dietary changes!
There’s been a lot of popular talk about “people taking semaglutide eat less”, but it’s mostly anecdotal and/or presumed based on parts of the mechanism of action (increasing insulin production, reducing glucagon secretions, modulating dietary cravings).
Where studies have looked at dietary changes, it’s almost exclusively been a matter of looking at caloric intake (which has been found to be a 16–39% reduction), and observations-in-passing that patients reported reduction in cravings for fatty and sweet foods.
This reduction in caloric intake, by the way, is not significantly different to the reduction brought about by counselling alone (head-to-head studies have been done; these are also discussed in the research review).
However! It gets worse. Very few studies of good quality have been done, even fewer (two studies) actually had a registered dietitian nutritionist on the team, and only one of them used the “gold standard” of nutritional research, the 24-hour dietary recall test. Which, in case you’re curious, you can read about what that is here:
Dietary Assessment Methods: What Is A 24-Hour Recall?
Of the four studies that actually looked at the macros (unlike most studies), they found that on average, protein intake decreased by 17.1%. Which is a big deal!
It’s an especially big deal, because while protein’s obviously important for everyone, it’s especially important for anyone trying to lose weight, because muscle mass is a major factor in metabolic base rate—which in turn is much important for fat loss/maintenance than exercise, when it comes to how many calories we burn by simply existing.
A reasonable hypothesis, therefore, is that one of the numerous reasons people who quit GLP-1 agonists immediately put fat back on, is because they probably lost muscle mass in amongst their weight loss, meaning that their metabolic base rate will have decreased, meaning that they end up more disposed to put on fat than before.
And, that’s just a hypothesis and it’s a hypothesis based on very few studies, so it’s not something to necessarily take as any kind of definitive proof of anything, but it is to say—as the researchers of this review do loudly say—more research needs to be done into this, because this has been a major gap in research so far!
Any other bad news?
While we’re talking research gaps, guess how many studies looked into micronutrient intake changes in people taking GLP-1 agonists?
If you guessed zero, you guessed correctly.
You can find the paper itself here:
What’s the main take-away here?
On a broad, scoping level: we need more research!
On a “what this means for individuals who want to lose weight” level: maybe we should be more wary of this still relatively new (less than 10 years old) “wonder drug”. And for most of those 10 years it’s only been for diabetics, with weight loss use really being in just the past few years (2021 onwards).
In other words: not necessarily any need to panic, but caution is probably not a bad idea, and natural weight loss methods remain very reasonable options for most people.
See also: How To Lose Weight (Healthily!)
Take care!
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