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.
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Sleep Smarter – by Shawn Stevenson
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You probably know to avoid blue light before bed, put a curfew on the caffeine, and have fresh bedding. So, what does this book offer that’s new?
As the subtitle suggests, it’s 21 tips for better sleep, so if even half of them are new, then it’ll still be adding value.
This is a book review, not a book summary, but to give an idea of the kind of thing you might not already know: there’s a section on bedroom houseplants! For example…
- Which plants filter the air best according to NASA, rather than “according to tradition”
- Which plants will thrive in what will hopefully be a cool dark environment
- Which plants produce oxygen even at night, rather than just during the day
The writing style is personable without losing clarity or objectivity:
- We read personal anecdotes, and we read science
- We get “I tried this”, and we get “this sleep study found such-and-such”
- We get not just the “what”, but also the “why” and the “how”
We get the little changes that make a big difference—sometimes the difference between something working or not!
Bottom line: if you’d like to get better sleep and a blue light filter hasn’t wowed you and changed your life, this book will bring your sleep knowledge (and practice) to the next level.
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Live Life in Crescendo – by Stephen Covey and Cynthia Covey-Haller
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Stephen Covey is of course best known for his “7 Habits of Highly Effective People“, while the dozen books he wrote afterwards, not including this one, did not get the same acclaim.
Not including this one, because this one was published posthumously and, notwithstanding the order of the names on the cover, in all likelihood his daughter wrote most of.
And yet! The very spirit of this book is in defiance of 7 Habits being his “early career” magnum opus. We say “early career”, because he was 57 already when that was published, but it was one of his earlier books.
In this work the authors lay out the case for how “your most important work is always ahead of you“, and that it is perfectly possible to “live life in crescendo“, and keep on giving whatever it is that we want to give to the world.
We also learn, mostly through storytelling, of how people are infinitely more important than things, and that it is there that we should put our investments. And that while adversity may not make us stronger, it just means we may need to change our approach, to continue to be productive in whatever way is meaningful to us.
Bottom line: if ever you wonder how your future could live up to your past (in a good way), this is the book to get you thinking.
Click here to check out Live Life in Crescendo, and figure out what your next great work will be!
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Behaving During the Holidays
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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
❝It’s hard to “behave” when it comes to holiday indulging…I’m on a low sodium, sugar restricted regimen from my doctor. Trying to get interested in bell peppers as a snack…wish me luck!❞
Good luck! Other low sodium, low sugar snacks include:
- Nuts! Unsalted, of course. We’re biased towards almonds 😉
- Mixed nuts are an especially healthy way to snack, though (assuming you don’t have an allergy, obviously)
- Air-popped popcorn (you can season it, just not with salt/sugar!)
- Fruit (but not fruit juice; it has to be in solid form)
- Peas (not a classic snack food, we know, but they can be enjoyed many ways)
- Seriously, try them frozen or raw! Frozen/raw peas are a great sweet snack.
- Chickpeas are great dried/roasted, by the way, and give much of the same pleasure as a salty snack without being salty! Obviously, this means cooking them without salt, but that’s fine, or if using tinned, choose “in water” rather than “in brine”
- Hummus is also a great healthy snack (check the ingredients for salt if not making it yourself, though) and can be enjoyed as a dip using raw vegetables (celery, carrot sticks, cruciferous vegetables, whatever you prefer)
Enjoy!
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- Nuts! Unsalted, of course. We’re biased towards almonds 😉
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Vaping: A Lot Of Hot Air?
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Vaping: A Lot Of Hot Air?
Yesterday, we asked you for your (health-related) opinions on vaping, and got the above-depicted, below-described, set of responses:
- A little over a third of respondents said it’s actually more dangerous than smoking
- A little under a third of respondents said it’s no better nor worse, just different
- A little over 10% of respondents said it’s marginally less harmful, but still very bad
- A little over 10% of respondents said it’s a much healthier alternative to smoking
So what does the science say?
Vaping is basically just steam inhalation, plus the active ingredient of your choice (e.g. nicotine, CBD, THC, etc): True or False?
False! There really are a lot of other chemicals in there.
And “chemicals” per se does not necessarily mean evil green glowing substances that a comicbook villain would market, but there are some unpleasantries in there too:
- Potential harmful health effects of inhaling nicotine-free shisha-pen vapor: a chemical risk assessment of the main components propylene glycol and glycerol
- Inflammatory and Oxidative Responses Induced by Exposure to Commonly Used e-Cigarette Flavoring Chemicals and Flavored e-Liquids without Nicotine
So, the substrate itself can cause irritation, and flavorings (with cinnamaldehyde, the cinnamon flavoring, being one of the worst) can really mess with our body’s inflammatory and oxidative responses.
Vaping can cause “popcorn lung”: True or False?
True and False! Popcorn lung is so-called after it came to attention when workers at a popcorn factory came down with it, due to exposure to diacetyl, a chemical used there.
That chemical was at that time also found in most vapes, but has since been banned in many places, including the US, Canada, the EU and the UK.
Vaping is just as bad as smoking: True or False?
False, per se. In fact, it’s recommended as a means of quitting smoking, by the UK’s famously thrifty NHS, that absolutely does not want people to be sick because that costs money:
Of course, the active ingredients (e.g. nicotine, in the assumed case above) will still be the same, mg for mg, as they are for smoking.
Vaping is causing a health crisis amongst “kids nowadays”: True or False?
True—it just happens to be less serious on a case-by-case basis to the risks of smoking.
However, it is worth noting that the perceived harmlessness of vapes is surely a contributing factor in their widespread use amongst young people—decades after actual smoking (thankfully) went out of fashion.
On the other hand, there’s a flipside to this:
Flavored vape restrictions lead to higher cigarette sales
So, it may indeed be the case of “the lesser of two evils”.
Want to know more?
For a more in-depth science-ful exploration than we have room for here…
BMJ | Impact of vaping on respiratory health
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The Autoimmune Cure – by Dr. Sara Gottfried
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We’ve featured Dr. Gottfried before, as well as another of her books (“Younger”), and this one’s a little different, and on the one hand very specific, while on the other hand affecting a lot of people.
You may be thinking, upon reading the subtitle, “this sounds like Dr. Gabor Maté’s ideas” (per: “When The Body Says No”), and 1) you’d be right, and 2) Dr. Gottfried does credit him in the introduction and refers back to his work periodically later.
What she adds to this, and what makes this book a worthwhile read in addition to Dr. Maté’s, is looking clinically at the interactions of the immune system and nervous system, but also the endocrine system (Dr. Gottfried’s specialty) and the gut.
Another thing she adds is more of a focus on what she writes about as “little-t trauma”, which is the kind of smaller, yet often cumulative, traumas that often eventually add up over time to present as C-PTSD.
While “stress increases inflammation” is not a novel idea, Dr. Gottfried takes it further, and looks at a wealth of clinical evidence to demonstrate the series of events that, if oversimplified, seem unbelievable, such as “you had a bad relationship and now you have lupus”—showing evidence for each step in the snowballing process.
The style is a bit more clinical than most pop-science, but still written to be accessible to laypersons. This means that for most of us, it might not be the quickest read, but it will be an informative and enlightening one.
In terms of practical use (and living up to its subtitle promise of “cure”), this book does also cover all sorts of potential remedial approaches, from the obvious (diet, sleep, supplements, meditation, etc) to the less obvious (ketamine, psilocybin, MDMA, etc), covering the evidence so far as well as the pros and cons.
Bottom line: if you have or suspect you may have an autoimmune problem, and/or would just like to nip the risk of such in the bud (especially bearing in mind that the same things cause neuroinflammation and thus, putatively, depression and dementia too), then this is one for you.
Click here to check out the Autoimmune Cure, and take care of your body and mind!
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Tahini vs Hummus – Which is Healthier?
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Our Verdict
When comparing tahini to hummus, we picked the tahini.
Why?
Both are great! But tahini is so nutritionally dense, that it makes even the wonder food that is hummus look bad next to it.
In terms of macros, tahini is higher in everything except water. So, higher in protein, carbs, fats, and fiber. In terms of those fats, the fat breakdown is similar for both, being mostly polyunsaturated and monounsaturated, with a small percentage of saturated. Tahini has the lower glycemic index, but both are so low that it makes no practical difference.
In terms of vitamins, tahini has more of vitamins A, B1, B2, B3, B5, B9, E, and choline, while hummus is higher in vitamin B6.
This is a good reason to embellish hummus with some red pepper (vitamin A), a dash of lemon (vitamin C), etc, but we’re judging these foods in their most simple states, for fairness.
When it comes to minerals, tahini has more calcium, copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc. Meanwhile, hummus is higher in sodium.
Note: hummus is a good source of all those minerals too! Tahini just has more.
In short… Enjoy both, but tahini is the more nutritionally dense by far. On the other hand, if for whatever reason you’re looking for something lower in carbs, fats, and calories, then hummus is where it’s at.
Want to learn more?
You might like to read:
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