Mythbusting The Big O
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“Early To Bed…”
In yesterday’s newsletter, we asked you for your (health-related) views on orgasms.
But what does the science say?
Orgasms are essential to good health: True or False?
False, in the most literal sense. One certainly won’t die without them. Anorgasmia (the inability to orgasm) is a condition that affects many postmenopausal women, some younger women, and some men. And importantly, it isn’t fatal—just generally considered unfortunate:
Anorgasmia Might Explain Why You’re Not Orgasming When You Want To
That article focuses on women; here’s a paper focusing on men:
Orgasms are good for the health, but marginally: True or False?
True! They have a wide array of benefits, depending on various factors (including, of course, one’s own sex). That said, the benefits are so marginal that we don’t have a flock of studies to cite, and are reduced to pop-science sources that verbally cite studies that are, alas, nowhere to be found, for example:
- For women: 9 Orgasm Benefits That Might Surprise You
- For men: 9 Ways Orgasms May Benefit Your Health
Doubtlessly the studies do exist, but are sparse enough that finding them is a nightmare as the keywords for them will bring up a lot of studies about orgasms and health that aren’t answering the above question (usually: health’s affect on orgasms, rather than the other way around).
There is some good science for post-menopausal women, though! Here it is:
Misconceptions About Sexual Health in Older Women
(if you have the time to read this, this also covers many very avoidable things that can disrupt sexual function, in ways that people will errantly chalk up to old age, not knowing that they are missing out needlessly)
Orgasms are good or bad, depending on being male or female: True or False
False, broadly. The health benefits are extant and marginal for almost everyone, as indicated above.
What’s that “almost” about, then?
There are a very few* people (usually men) for whom it doesn’t go well. In such cases, they have a chronic and lifelong problem whereby orgasm is followed by 2–7 days of flu-like and allergic symptoms. Little is known about it, but it appears to be some sort of autoimmune disorder.
Read more: Post-orgasmic illness syndrome: history and current perspectives
*It’s hard to say for sure how few though, as it is surely under-reported and thus under-diagnosed; likely even misdiagnosed if the patient doesn’t realize that orgasms are the trigger for such episodes, and the doctor doesn’t think to ask. Instead, they will be busy trying to eliminate foods from the diet, things like that, while missing this cause.
Orgasms are better avoided for optimal health: True or False?
Aside from the above, False. There is a common myth for men of health benefits of “semen retention”, but it is not based in science, just tradition. You can read a little about it here:
The short version is: do it if you want; don’t if you don’t; the body will compensate either way so it won’t make a meaningful difference to anything for most people, healthwise.
Small counterpoint: while withholding orgasm (and ejaculation) is not harmful to health, what does physiologically need draining sometimes is prostate fluid. But that can also be achieved mechanically through prostate milking, or left to fend for itself (as it will in nocturnal emissions, popularly called wet dreams). However, if you have problems with an enlarged prostate, it may not be a bad idea to take matters into your own hands, so to speak. As ever, do check with your doctor if you have (or think you may have) a condition that might affect this.
One final word…
We’re done with mythbusting for today, but we wanted to share this study that we came across (so to speak) while researching, as it’s very interesting:
On which note: if you haven’t already, consider getting a “magic wand” style vibe; you can thank us later (this writer’s opinion: everyone should have one!).
Top tip: do get the kind that plugs into the wall, not rechargeable. The plug-into-the-wall kind are more powerful, and last much longer (both “in the moment”, and in terms of how long the device itself lasts).
Enjoy!
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Why You Should Diversify Your Nuts!
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Time to go nuts for nuts!
Nuts, in popular perception, range from “basically the healthiest food anyone can eat” to “basically high calorie salty snacks”. And, they can be either!
Some notes, then:
- Raw is generally better that not
- Dry roasted is generally better than the kind with added oils
- Added salt is neither necessary nor good
Quick tip: if “roasted salted” are the cheapest or most convenient to buy, you can at least mitigate that by soaking them in warm water for 5 minutes, before rinsing and (if you don’t want wet nuts) drying.
You may be wondering: who does want wet nuts? And the answer is, if for example you’re making a delicious cashew and chickpea balti, the fact you didn’t dry them before throwing them in won’t make a difference.
Now, let’s do a quick run-down; we don’t usually do “listicles” but it seemed a good format here, so we’ve picked a top 5 for nutritional potency:
Almonds
We may have a bias. We accept it. But almonds are also one of the healthiest nuts around, and generally considered by most popular metrics the healthiest.
Not only are they high in protein, healthy fat, fiber, vitamins, and minerals, but they’re even a natural prebiotic that increases the populations of healthy gut bacteria, while simultaneously keeping down the populations of gut pathogens—what more can we ask of a nut?
Read more: Prebiotic effects of almonds and almond skins on intestinal microbiota in healthy adult humans
Pistachios
Not only are these super tasty and fun to eat (and mindful eating is all but guaranteed, as shelling them by hand slows us down and makes us more likely to eat them one at a time rather than by the handful), but also they contain lots of nutrients and are lower in calories than most nuts, so they’re a great option for anyone who’d like to eat more nuts but is doing a calorie-controlled diet and doesn’t want to have half a day’s calories in a tiny dish of nuts.
Walnuts
Popularly associated with brain health (perhaps easy to remember because of their appearance), they really are good for the brain:
Check it out: Beneficial Effects of Walnuts on Cognition and Brain Health
Cashews
A personal favorite of this writer for their versatility in cooking, food prep, or just as a snack, they also do wonders for metabolic health:
Brazil nuts
The most exciting thing about these nuts is that they’re an incredibly potent source of selenium, which is important not just for hair/skin/nails as popularly marketed, but also for thyroid hormone production and DNA synthesis.
But don’t eat too many, because selenium is definitely one of those “you can have too much of a good thing” nutrients, and selenium poisoning can make your hair (however beautiful and shiny it got because of the selenium) fall out if you take too much.
Know the numbers: Brazil nuts and selenium—health benefits and risks
Bottom line on nuts:
- Nuts are a great and healthful part of almost anyone’s diet
- Obviously, if you have a nut allergy, then we’re sorry; this one won’t have helped you so much
- Almonds are one of the most healthful nuts out there
- Brazil nuts are incredibly potent, to the point where moderation is recommended
- A handful of mixed nuts per day is a very respectable option—when it comes to food and health, diversity is almost always good!
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100 No-Equipment Workouts – by Neila Rey
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For those of us who for whatever reason prefer to exercise at home rather than at the gym, we must make do with what exercise equipment we can reasonably install in our homes. This book deals with that from the ground upwards—literally!
If you have a few square meters of floorspace (and a ceiling that’s not too low, for exercises that involve any kind of jumping), then all 100 of these zero-equipment exercises are at-home options.
As to what kinds of exercises they are, they each marked as being one or both of “cardio” and “strength”.
They’re also marked as being of “difficulty level” 1, 2, or 3, so that someone who hasn’t exercised in a while (or hasn’t exercised like this at all), can know where best to start, and how best to progress.
The exercises come with clear explanations in the text, and clear line-drawing illustrations of how to do each exercise. Really, they could not be clearer; this is top quality pragmatism, and reads like a military manual.
Bottom line: whatever your strength and fitness goals, this book can see you well on your way to them (if not outright get you there already in many cases). It’s also an excellent “all-rounder” for full-body workouts.
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As The Summer Gets Hotter Still…
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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
❝I would love to see an article about heat dehydrated illness….so much of the US is under hot conditions. I had an fainting sweating episode and now trying to recoup from it. What should we do? Drink water,rest…???❞
We have done some of this, but it’s always a good one to revisit! Last summer (N. Hemisphere summer), we wrote this:
Stay Safe From Heat Exhaustion & Heatstroke!
…and this year, it’s getting hotter still (and is already the hottest summer on record), with certainly much of the US seriously affected, as you say. Next year, it will probably be worse again; climate change is getting predictable like that, and likely will continue until fixed. We are but a health science publication, so we can’t fix the world’s climate, but we can reiterate the above advice, and urge everyone to take it seriously.
Note: heat exhaustion and heatstroke kill. Yes, we’re including heat exhaustion in that, because by the time you get heat exhaustion, you’re often not in the best state of mind to take the correct steps to avoid the heatstroke that follows.
To think otherwise would be akin to thinking “falling never killed anyone; it’s only when you stop falling that it’s dangerous”.
This summer, we did also write this more niche article:
…whose advice won’t apply to everyone, but will be helpful to some, and honestly, some of that advice does go for everyone.
One thing we didn’t write about in those articles that we’ll add here:
Humidity is dangerous:
- Dry heat: you sweat, the sweat evaporates, cooling you. As well as losing heat, you’ve also now lost water and salts, which you’ll need to replenish, but your body is operating correctly.
- Humid heat: you sweat, and now you are just sweaty until further notice. It doesn’t evaporate because the surrounding humidity doesn’t provide the physics for that. Not only are you not losing heat through evaporating sweat, but also, if you’re wearing clothes, that’s now an insulating layer you’re wearing.
…so that means, watch the humidity as carefully as you watch the temperature, and when it’s high, get extra serious about finding ways to keep yourself cool (e.g. shade, rest, cooling showers etc if you can, that kind of thing).
Take care!
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Alzheimer’s Sex Differences May Not Be What They Appear
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Alzheimer’s Sex Differences May Not Be What They Appear
Women get Alzheimer’s at nearly twice the rate than men do, and deteriorate more rapidly after onset, too.
So… Why?
There are many potential things to look at, but four stand out for quick analysis:
- Chromosomes: women usually have XX chromosomes, to men’s usual XY. There are outliers to both groups, people with non-standard combinations of chromosomes, but not commonly enough to throw out the stats.
- Hormones: women usually have high estrogen and low testosterone, compared to men. Again there are outliers and this is a huge oversimplification that doesn’t even look at other sex hormones, but broadly speaking (which sounds vague, but is actually what is represented in epidemiological studies), it will be so.
- Anatomy: humans have some obvious sexual dimorphism (again, there are outliers, but again, not enough to throw out the stats); this seems least likely to be relevant (Alzheimer’s is probably not stored in the breasts, for examples), though average body composition (per muscle:fat ratio) could admittedly be a factor.
- Social/lifestyle: once again, #NotAllWomen etc, but broadly speaking, women and men often tend towards different social roles in some ways, and as we know, of course lifestyle can play a part in disease pathogenesis.
As a quick aside before we continue, if you’re curious about those outliers, then a wiki-walk into the fascinating world of intersex conditions, for example, could start here. But by and large, this won’t affect most people.
So… Which parts matter?
Back in 2018, Dr. Maria Teresa Ferretti et al. kicked up some rocks in this regard, looking not just at genes (as much research has focussed on) or amyloid-β (again, well-studied) but also at phenotypes and metabolic and social factors—bearing in mind that all three of those are heavily influenced by hormones. Noting, for example, that (we’ll quote directly here):
- Men and women with Alzheimer disease (AD) exhibit different cognitive and psychiatric symptoms, and women show faster cognitive decline after diagnosis of mild cognitive impairment (MCI) or AD dementia.
- Brain atrophy rates and patterns differ along the AD continuum between the sexes; in MCI, brain atrophy is faster in women than in men.
- The prevalence and effects of cerebrovascular, metabolic and socio-economic risk factors for AD are different between men and women.
See: Sex differences in Alzheimer disease—the gateway to precision medicine
So, have scientists controlled for each of those factors?
Mostly not! But they have found clues, anyway, while noting the limitations of the previous way of conducting studies. For example:
❝Women are more likely to develop Alzheimer’s disease and experience faster cognitive decline compared to their male counterparts. These sex differences should be accounted for when designing medications and conducting clinical trials❞
~ Dr. Feixiong Cheng
Read: Research finds sex differences in immune response and metabolism drive Alzheimer’s disease
Did you spot the clue?
It was “differences in immune response and metabolism”. These things are both influenced by (not outright regulated by, but strongly influenced by) sex hormones.
❝As [hormonal] sex influences both the immune system and metabolic process, our study aimed to identify how all of these individual factors influence one another to contribute to Alzheimer’s disease❞
~ Dr. Justin Lathia
Ignoring for a moment progesterone’s role in metabolism, estrogen is an immunostimulant and testosterone is an immunosuppressant. These thus both also have an effect in inflammation, which yes, includes neuroinflammation.
But wait a minute, shouldn’t that mean that women are more protected, not less?
It should! Except… Alzheimer’s is an age-related disease, and in the age-bracket that generally gets Alzheimer’s (again, there are outliers), menopause has been done and dusted for quite a while.
Which means, and this is critical: post-menopausal women not on HRT are essentially left without the immune boost usually directed by estrogen, while men of the same age will be ticking over with their physiology that (unlike that of the aforementioned women) was already adapted to function with negligible estrogen.
Specifically:
❝The metabolic consequences of estrogen decline during menopause accelerate neuropathology in women❞
~ Dr. Rasha Saleh
Critical idea to take away from all this:
Alzheimer’s research is going to be misleading if it doesn’t take into account sex differences, and not just that, but also specifically age-relevant sex differences—because that can flip the narrative. If we don’t take age into account, we could be left thinking estrogen is to blame, when in fact, it appears to be the opposite.
In the meantime, if you’re a woman of a certain age, you might talk with a doctor about whether HRT could be beneficial for you, if you haven’t already:
❝Women at genetic risk for AD (carrying at least one APOE e4 allele) seem to be particularly benefiting from MHT❞
(MHT = Menopausal Hormone Therapy; also commonly called HRT, which is the umbrella term for Hormone Replacement Therapies in general)
~ Dr. Herman Depypere
Source study: Menopause hormone therapy significantly alters pathophysiological biomarkers of Alzheimer’s disease
Pop-sci press release version: HRT could ward off Alzheimer’s among at-risk women
Take care!
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Osteoarthritis Of The Knee
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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
❝Very informative thank you. And made me think. I am a 72 yr old whitewoman, have never used ( or even been offered) HRT since menopause ~15 yrs ago. Now I’m wondering if it would have delayed the onset of osteoarthritis ( knee) and give me more energy in general. And is it wise to start taking hrt after being without those hormones for so long?❞
(this was in response to our article about menopausal HRT)
Thanks for writing! To answer your first question, obviously we can never know for sure now, but it certainly is possible, per for example a large-ish (n=1003) study of women aged 45–64, in which:
- Those with HRT were significantly less likely to have knee arthritis than those without
- However, to enjoy this benefit depended on continued use (those who used it for a bit and then stopped did not enjoy the same results)
- While it made a big difference to knee arthritis, it made only a small (but still beneficial) difference to wrist/hand arthritis.
We could hypothesize that this is because the mechanism of action is more about strengthening the bones (proofing against osteoporosis is one of the main reasons many people take HRT) and cartilage than it is against inflammation directly.
Since the knee is load-bearing and the hand/wrist joints usually are not, this would mean the HRT strengthening the bones makes a big difference to the “wear and tear” aspect of potential osteoarthritis of the knee, but not the same level of benefit for the hand/wrist, which is less about wear and tear and more about inflammatory factors. But that latter, about it being load-bearing, is just this writer’s hypothesis as to why the big difference.
The researchers do mention:
❝In OA the mechanisms by which HRT might act are highly speculative, but could entail changes in cartilage repair or bone turnover, perhaps with cytokines such as interleukin 6, for example.❞
What is clear though, is that it does indeed appear to have a protective effect against osteoarthritis of the knee.
With regard to the timing, the researchers do note:
❝Why as little as three years of HRT should have a demonstrable effect is unclear. Given the difficulty in ascertaining when the disease starts, it is hard to be sure of the importance of the timing of HRT, and whether early or subclinical disease was present.
These results taken together suggest that HRT has a metabolic action that is only effective if given continuously, perhaps by preventing disease initiation; once HRT is stopped there might be a ‘rebound’ effect, explaining the rapid return to normal risk❞
~ Ibid.
You can read the study here:
On whether it is worth it now…
Again, do speak with an endocrinologist because your situation may vary, but:
- hormones are simply messengers, and your body categorically will respond to those messages regardless of age, or time elapsed without having received such a message. Whether it will repair all damage done is another matter entirely, but it would take a biological miracle for it to have no effect at all.
- anecdotally, many women do enjoy life-changing benefits upon starting HRT at your age and older!
(We don’t like to rely on “anecdotally”, but we couldn’t find studies isolating according to “length of time since menopause”—we’ll keep an eye out and if we find something in the future, we’ll mention it!)
Meanwhile, take care!
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Daily, Weekly, Monthly: Habits Against Aging
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Dr. Anil Rajani has advice on restoring/retaining youthfulness. Two out of three of the sections are on skincare specifically, which may seem a vanity, but it’s also worth remembering that our skin is a very large and significant organ, and makes a big difference for the rest of our physical health, as well as our mental health. So, it’s worthwhile to look after it:
The recommendations
Daily: meditation practice
Meditation reduces stress, which reduction in turn protects telomere length, slowing the overall aging process in every living cell of the body.
Weekly: skincare basics
Dr. Rajani recommends a combination of retinol and glycolic acid. The former to accelerate cell turnover, stimulate collagen production, and reduce wrinkles; the latter, to exfoliate dead cells, allowing the retinol to do its job more effectively.
We at 10almonds would like to add: wearing sunscreen with SPF50 is a very good thing to do on any day that your phone’s weather app says the UV index is “moderate” or higher.
Monthly: skincare extras
Here are the real luxuries; spa visits, microneedling (stimulates collagen production), and non-ablative laser therapy. He recommends creating a home spa if possible for monthly skincare treatments, investing in high-quality devices for long-term benefits.
For more on all of these things, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
- Age & Aging: What Can (And Can’t) We Do About It?
- No-Frills, Evidence-Based Mindfulness
- The Evidence-Based Skincare That Beats Product-Specific Hype
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
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