Staying Strong: Tips To Prevent Muscle Loss With Age
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Dr. Andrea Furlan, specialist in physical medicine and rehabilitation with 30 years of experience, has advice:
Fighting sarcopenia
Sarcopenia is so common as to be considered “natural”, but “natural” does not mean “obligatory” and it certainly doesn’t mean “healthy”. As for how to fight it?
You may be thinking “let us guess, is it eat protein and do resistance exercises? And yes it is, but that’s only part of it…
Firstly, she recommends remembering why you are doing this, or because understanding is key to compliance (i.e. your perfect diet and exercise program will mean nothing if you don’t actually do it, and you won’t do it enough to make it a habit, let alone keep it up, if the reasons aren’t clear in your mind).
Sarcopenia comes with an increased risk of falls, reduced physical capacity in general, resultant disability, social isolation, and depression. Of course, this is not a one-to-one equation; you will not necessarily become depressed the moment your muscle mass is below a certain percentage, but statistically speaking, the road to ruin is laid out clearly.
Secondly, she recommends being on the lookout for it. If you check your body composition regularly with a gadget, that’s great and laudable; if you don’t, then a) consider getting one (here’s an example product on Amazon), and b) watch out for decreased muscle strength, fatigue, reduced stamina, noticeable body shape changes with muscle loss and (likely) fat gain.
Thirdly, she recommends more than just regular resistance training and good protein intake. Yes, she recommends those things too, but also getting enough water (can’t rebuild the body without it), avoiding a sedentary lifestyle (sitting leads to atrophy of many supporting and stabilizing muscles, you know, the kind of muscles that don’t look flashy but stop you falling down), and getting good sleep—vital for all kinds of body maintenance, and muscle maintenance is no exception (there’s a reason bodybuilders sleep 9–12 hours daily when in a gaining phase; you don’t need to do that, but don’t skimp on your 7–9 hours, yes, really, even you, yes, at any age).
Lastly, she recommends continuing to learn about the topic, as otherwise it’s easy to go off-track.
For more information on all of the above and more, enjoy:
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Want to learn more?
You might also like to read:
- Protein: How Much Do We Need, Really?
- Resistance Is Useful! (Especially As We Get Older)
- Resistance Beyond Weights
- HIIT, But Make It HIRT ← this is about high-intensity resistance training (HIRT); confusing the muscles like one confuses the heart in HIIT, which thus yields improved results
- Sleep: Yes, You Really Do Still Need It
Take care!
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Natto, Taurine + Black Pepper, And Other Game-Changers
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It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
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
❝Loved the info on nuts; of course I always eat pecans, which didn’t make the list of healthy nuts!❞
Dear subscriber, pardon the paraphrase of your comment—somehow it got deleted and now exists only in this writer’s memory. However, to address it:
Pecans are great too! We can’t include everything in every article (indeed, we got another feedback the same day saying the article was too long), but we love when you come to us with stuff for us to look at and write about (seriously, writer here: the more you ask, the easier it makes my job), so let’s talk pecans for a moment:
Pecans would have been number six on our list if we’d have written more!
Like many nuts, they’ve an abundance of healthy fats, fiber, vitamins, and minerals.
They’re particularly good for zinc, which is vital for immune function, healing (including normal recovery after normal exercise), and DNA synthesis (so: anti-aging).
Pecans are also great for reducing LDL (“bad” cholesterol) and triglycerides (which are also bad for heart health); check it out:
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How Not to Age – by Dr. Michael Greger
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This book is the reason today’s newsletter wasn’t out some hours previously; it was published today, and this reviewer (who got her pre-order copy at midnight GMT) needed to finish reading it first! Never let it be said we don’t bring you the very latest health news
First things first: it’s a great book, and it’s this reviewer’s favorite of Dr. Greger’s so far.
Unlike many popular physician authors, Dr. Greger doesn’t rehash a lot of old material, and instead favours prioritizing new material in each work. Where appropriate, he’ll send the reader to other books for more specific information (e.g: you want to know how to avoid premature death? Go read How Not To Die. You want to know how to lose weight? How Not To Diet. Etc).
In the category of new information, he has a lot to offer here. And with over 8,000 references, it’s information, not conjecture. On which note, we recommend the e-book version if that’s possible for you, for three reasons:
- It’s possible to just click the references and be taken straight to the cited paper itself online
- To try to keep the book’s size down, Dr. Greger has linked to other external resources too
- The only negative reviews on Amazon, so far, are people complaining that the print copy’s text is smaller than they’d like
For all its information-density (those 8,000+ references are packed into 600ish pages), the book is very readable even to a lay reader; the author is a very skilled writer.
As for the content, we can’t fit more than a few sentences here so forgive the brevity, but we’ll mention that he covers:
- Slowing 11 pathways of aging
- The optimal anti-aging regimen according to current best science
- Preserving function (specific individual aspects of aging, e.g. hearing, sight, cognitive function, sexual function, hair, bones, etc)
- “Dr. Greger’s Anti-Aging Eight”
In terms of “flavor” of anti-aging science, his approach can be summed up as: diet and lifestyle as foundation; specific supplements and interventions as cornerstones.
Bottom line: this is now the anti-aging book.
Click here to check out How Not To Age, and look after yourself with the best modern science!
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Mythbusting The Mask Debate
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Mythbusting The Mask Debate
We asked you for your mask policy this respiratory virus season, and got the above-depicted, below-described, set of responses:
- A little under half of you said you will be masking when practical in indoor public places
- A little over a fifth of you said you will mask only if you have respiratory virus symptoms
- A little under a fifth of you said that you will not mask, because you don’t think it helps
- A much smaller minority of you (7%) said you will go with whatever people around you are doing
- An equally small minority of you said that you will not mask, because you’re not concerned about infections
So, what does the science say?
Wearing a mask reduces the transmission of respiratory viruses: True or False?
True…with limitations. The limitations include:
- The type of mask
- A homemade polyester single-sheet is not the same as an N95 respirator, for instance
- How well it is fitted
- It needs to be a physical barrier, so a loose-fitting “going through the motions” fit won’t help
- The condition of the mask
- And if applicable, the replaceable filter in the mask
- What exactly it has to stop
- What kind of virus, what kind of viral load, what kind of environment, is someone coughing/sneezing, etc
More details on these things can be found in the link at the end of today’s main feature, as it’s more than we could fit here!
Note: We’re talking about respiratory viruses in general in this main feature, but most extant up-to-date research is on COVID, so that’s going to appear quite a lot. Remember though, even COVID is not one beast, but many different variants, each with their own properties.
Nevertheless, the scientific consensus is “it does help, but is not a magical amulet”:
- 2021: Effectiveness of Face Masks in Reducing the Spread of COVID-19: A Model-Based Analysis
- 2022: Why Masks are Important during COVID‐19 Pandemic
- 2023: The mitigating effect of masks on the spread of COVID-19
Wearing a mask is actually unhygienic: True or False?
False, assuming your mask is clean when you put it on.
This (the fear of breathing more of one’s own germs in a cyclic fashion) was a point raised by some of those who expressed mask-unfavorable views in response to our poll.
There have been studies testing this, and they mostly say the same thing, “if it’s clean when you put it on, great, if not, then well yes, that can be a problem”:
❝A longer mask usage significantly increased the fungal colony numbers but not the bacterial colony numbers.
Although most identified microbes were non-pathogenic in humans; Staphylococcus epidermidis, Staphylococcus aureus, and Cladosporium, we found several pathogenic microbes; Bacillus cereus, Staphylococcus saprophyticus, Aspergillus, and Microsporum.
We also found no associations of mask-attached microbes with the transportation methods or gargling.
We propose that immunocompromised people should avoid repeated use of masks to prevent microbial infection.❞
Source: Bacterial and fungal isolation from face masks under the COVID-19 pandemic
Wearing a mask can mean we don’t get enough oxygen: True or False?
False, for any masks made-for-purpose (i.e., are by default “breathable”), under normal conditions:
- COVID‐19 pandemic: do surgical masks impact respiratory nasal functions?
- Performance Comparison of Single and Double Masks: Filtration Efficiencies, Breathing Resistance and CO2 Content
However, wearing a mask while engaging in strenuous best-effort cardiovascular exercise, will reduce VO₂max. To be clear, you will still have more than enough oxygen to function; it’s not considered a health hazard. However, it will reduce peak athletic performance:
…so if you are worrying about whether the mask will impede you breathing, ask yourself: am I engaging in an activity that requires my peak athletic performance?
Also: don’t let it get soaked with water, because…
Writer’s anecdote as an additional caveat: in the earliest days of the COVID pandemic, I had a simple cloth mask on, the one-piece polyester kind that we later learned quite useless. The fit wasn’t perfect either, but one day I was caught in heavy rain (I had left it on while going from one store to another while shopping), and suddenly, it fitted perfectly, as being soaked through caused it to cling beautifully to my face.
However, I was now effectively being waterboarded. I will say, it was not pleasant, but also I did not die. I did buy a new mask in the next store, though.
tl;dr = an exception to “no it won’t impede your breathing” is that a mask may indeed impede your breathing if it is made of cloth and literally soaked with water; that is how waterboarding works!
Want up-to-date information?
Most of the studies we cited today were from 2022 or 2023, but you can get up-to-date information and guidance from the World Health Organization, who really do not have any agenda besides actual world health, here:
Coronavirus disease (COVID-19): Masks | Frequently Asked Questions
At the time of writing this newsletter, the above information was last updated yesterday.
Take care!
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An Unexpected Extra Threat Of Alcohol
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If You Could Use Some Exotic Booze…
…then for health reasons, we’re going to have to say “nay”.
We’ve written about alcohol before, and needless to say, it’s not good:
(the answer is “no, we cannot”)
In fact, the WHO (which unlike government regulatory bodies setting “safe” limits on drinking, makes no profit from taxes on alcohol sales) has declared that “the only safe amount of alcohol is zero”:
WHO: No level of alcohol consumption is safe for our health
Up there, where the air is rarefied…
If you’re flying somewhere this summer (Sinatra-style flying honeymoon or otherwise), you might want to skip the alcohol even if you normally do imbibe, because:
❝…even in young and healthy individuals, the combination of alcohol intake with sleeping under hypobaric conditions poses a considerable strain on the cardiac system and might lead to exacerbation of symptoms in patients with cardiac or pulmonary diseases.
These effects might be even greater in older people; cardiovascular symptoms have a prevalence of 7% of inflight medical emergencies, with cardiac arrest causing 58% of aircraft diversions.❞
Source: Alcohol plus cabin pressure at higher altitude may threaten sleeping plane passengers’ heart health
The experiment divided subjects into a control group and a study group; the study group were placed in simulated cabin pressure as though at altitude, which found, when giving some of them two small(we’re talking the kind given on flights) alcoholic drinks:
❝The combination of alcohol and simulated cabin pressure at cruising altitude prompted a fall in SpO2 to an average of just over 85% and a compensatory increase in heart rate to an average of nearly 88 beats/minute during sleep.❞
In contrast, that was 77 beats/minute for those who had alcohol but weren’t at altitude pressure, or 64 beats/minute for those who neither drank nor were at altitude pressure.
Lots more metrics were recorded and the study is interesting to read; if you’ve ever slept on a plane and thought “that sleep was not restful at all”, then know: it wasn’t just the seat’s fault, nor the engine, nor the recycled nature of the air—it was the reduced pressure causing hypoxia (defined as having oxygen levels lower than the healthy clinical norm of 90%) and almost halving your sleep’s effectiveness for a less than 10% drop in available oxygen in the blood (the sleepers not at altitude pressure averaged 96% SpO2, compared to the 85% at altitude).
We say “almost halving” because the deep sleep phase of sleep was reduced from 84 minutes (control) to 67.5 minutes at altitude without alcohol, or 46.5 minutes at altitude with alcohol.
Again, this was a pressure cabin in a lab—so this wasn’t about the other conditions of an airplane (seats, engine hundreds of other people, etc).
Which means: in an actual airplane it’s probably even worse.
Oh, and the study participants? All healthy individuals aged 18–40, so again probably worse for those older (or younger) than that range, or with existing health conditions!
Want to know more?
You can read the study in full here:
Want to drop the drink at any altitude? Check out:
Want to get that vacation feel without alcohol? You’re going to love:
Mocktails – by Moira Clark (book)
Enjoy!
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Biohack Your Brain – by Dr. Kristen Willeumier
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The title of this book is a little misleading, as it’s not really about biohacking; it’s more like a care and maintenance manual for the brain.
This distinction is relevant, because to hack a thing is to use it in a way it’s not supposed to be used, and/or get it to do something it’s not supposed to do.
Intead, what neurobiologist Dr. Kristen Willeumier offers us is much more important: how to keep our brain in good condition.
She takes us through the various things that our brain needs, and what will happen if it doesn’t get them. Some are dietary, some are behavioral, some are even cognitive.
A strength of this book is not just explaining what things are good for the brain, but also: why. Understanding the “why” can be the motivational factor that makes a difference between us doing the thing or not!
For example, if we know that exercise is good for the brain, we think “sounds reasonable” and carry on with what we were doing. If, however, we also understand how increased bloodflow helps with the timely removal of beta-amyloids that are associated with Alzheimer’s, we’re more likely to make time for getting that movement going.
Bottom line: there are key things we can do to keep our brain healthy, and you probably wouldn’t want to miss any. This book is a great care manual for such!
Click here to check out Biohack Your Brain and keep your brain young and fit!
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The Truth About Handwashing
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Washing Our Hands Of It
In Tuesdays’s newsletter, we asked you how often you wash your hands, and got the above-depicted, below-described, set of self-reported answers:
- About 54% said “More times per day than [the other options]”
- About 38% said “Whenever using the bathroom or kitchen
- About 5% said “Once or twice per day”
- Two (2) said “Only when visibly dirty”
- Two (2) said “I prefer to just use sanitizer gel”
What does the science have to say about this?
People lie about their handwashing habits: True or False?
True and False (since some people lie and some don’t), but there’s science to this too. Here’s a great study from 2021 that used various levels of confidentiality in questioning (i.e., there were ways of asking that made it either obvious or impossible to know who answered how), and found…
❝We analysed data of 1434 participants. In the direct questioning group 94.5% of the participants claimed to practice proper hand hygiene; in the indirect questioning group a significantly lower estimate of only 78.1% was observed.❞
Note: the abstract alone doesn’t make it clear how the anonymization worked (it is explained later in the paper), and it was noted as a limitation of the study that the participants may not have understood how it works well enough to have confidence in it, meaning that the 78.1% is probably also inflated, just not as much as the 94.5% in the direct questioning group.
Here’s a pop-science article that cites a collection of studies, finding such things as for example…
❝With the use of wireless devices to record how many people entered the restroom and used the pumps of the soap dispensers, researchers were able to collect data on almost 200,000 restroom trips over a three-month period.
The found that only 31% of men and 65% of women washed their hands with soap.❞
Source: Study: Men Wash Their Hands Much Less Often Than Women (And People Lie About Washing Their Hands)
Sanitizer gel does the job of washing one’s hands with soap: True or False?
False, though it’s still not a bad option for when soap and water aren’t available or practical. Here’s an educational article about the science of why this is so:
UCI Health | Soap vs. Hand Sanitizer
There’s also some consideration of lab results vs real-world results, because while in principle the alcohol gel is very good at killing most bacteria / inactivating most viruses, it can take up to 4 minutes of alcohol gel contact to do so, as in this study with flu viruses:
In contrast, 20 seconds of handwashing with soap will generally do the job.
Antibacterial soap is better than other soap: True or False?
False, because the main way that soap protects us is not in its antibacterial properties (although it does also destroy the surface membrane of many bacteria and for that matter viruses too, killing/inactivating them, respectively), but rather in how it causes pathogens to simply slide off during washing.
Here’s a study that found that handwashing with soap reduced disease incidence by 50–53%, and…
❝Incidence of disease did not differ significantly between households given plain soap compared with those given antibacterial soap.❞
Read more: Effect of handwashing on child health: a randomised controlled trial
Want to wash your hands more than you do?
There have been many studies into motivating people to wash their hands more (often with education and/or disgust-based shaming), but an effective method you can use for yourself at home is to simply buy more luxurious hand soap, and generally do what you can to make handwashing a more pleasant experience (taking a moment to let the water run warm is another good thing to do if that’s more comfortable for you).
Take care!
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