Is “Extra Virgin” Worth It?
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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 was wondering, is the health difference important between extra virgin olive oil and regular?❞
Assuming that by “regular” you mean “virgin and still sold as a food product”, then there are health differences, but they’re not huge. Or at least: not nearly so big as the differences between those and other oils.
Virgin olive oil (sometimes simply sold as “olive oil”, with no claims of virginity) has been extracted by the same means as extra virgin olive oil, that is to say: purely mechanical.
The difference is that extra virgin olive oil comes from the first pressing*, so the free fatty acid content is slightly lower (later checked and validated and having to score under a 0.8% limit for “extra virgin” instead of 2% limit for a mere “virgin”).
*Fun fact: in Arabic, extra virgin is called “البكر الممتاز“, literally “the amazing first-born”, because of this feature!
It’s also slightly higher in mono-unsaturated fatty acids, which is a commensurately slight health improvement.
It’s very slightly lower in saturated fats, which is an especially slight health improvement, as the saturated fats in olive oil are amongst the healthiest saturated fats one can consume.
On which fats are which:
The truth about fats: the good, the bad, and the in-between
And our own previous discussion of saturated fats in particular:
Can Saturated Fats Be Healthy?
Probably the strongest extra health-benefit of extra virgin is that while that first pressing squeezes out oil with the lowest free fatty acid content, it squeezes out oil with the highest polyphenol content, along with other phytonutrients:
If you enjoy olive oil, then springing for extra virgin is worth it if that’s not financially onerous, both for health reasons and taste.
However, if mere “virgin” is what’s available, it’s no big deal to have that instead; it still has a very similar nutritional profile, and most of the same benefits.
Don’t settle for less than “virgin”, though.
While some virgin olive oils aren’t marked as such, if it says “refined” or “blended”, then skip it. These will have been extracted by chemical means and/or blended with completely different oils (e.g. canola, which has a very different nutritional profile), and sometimes with a dash of virgin or extra virgin, for the taste and/or so that they can claim in big writing on the label something like:
a blend of
EXTRA VIRGIN OLIVE OIL
and other oils
…despite having only a tiny amount of extra virgin olive oil in it.
Different places have different regulations about what labels can claim.
The main countries that produce olives (and the EU, which contains and/or directly trades with those) have this set of rules:
International Olive Council: Designations and definitions of Olive Oils
…which must be abided by or marketers face heavy fines and sanctions.
In the US, the USDA has its own set of rules based on the above:
USDA | Olive Oil and Olive-Pomace Oil Grades and Standards
…which are voluntary (not protected by law), and marketers can pay to have their goods certified if they want.
So if you’re in the US, look for the USDA certification or it really could be:
- What the USDA calls “US virgin olive oil not fit for human consumption”, which in the IOC is called “lamp oil”*
- crude pomace-oil (oil made from the last bit of olive paste and then chemically treated)
- canola oil with a dash of olive oil
- anything yellow and oily, really
*This technically is virgin olive oil insofar as it was mechanically extracted, but with defects that prevent it from being sold as such, such as having a free fatty acid content above the cut-off, or just a bad taste/smell, or some sort of contamination.
See also: Potential Health Benefits of Olive Oil and Plant Polyphenols
(the above paper has a handy infographic if you scroll down just a little)
Where can I get some?
Your local supermarket, probably, but if you’d like to get some online, here’s an example product on Amazon for your convenience
Enjoy!
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What Mattress Is Best, By Science?
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The Foundations of Good Sleep
You probably know the importance of good sleep for good health. If not, here’s a quick refresher:
- Why You Probably Need More Sleep
- How Sleep-Deprived Are You, Really?
- The 6 Dimensions Of Sleep (And Why They Matter)
You should also definitely check out this quite famous book on the topic:
Why We Sleep – by Dr Matthew Walker
What helps, to get that good sleep
We’ve covered this a little before too, for example:
- Safe Effective Sleep Aids For Seniors
- Sleep Better With Better Air
- How To Nap Like A Pro (No More “Sleep Hangovers”!)
How to level-up from there
One of the biggest barriers to good sleep for many people is obstructive sleep apea:
Healthier, Natural Sleep Without Obstruction!
We covered (in the above article) a whole lot of ways of mitigating/managing obstructive sleep apnea. One of the things we mentioned as beneficial was avoiding sleeping on one’s back, and this is something Mayo Clinic’s Dr. Somers agreed with:
Back Sleeping, And Sleeping Differently After 50
“But side-sleeping is uncomfortable”
If this is you, then chances are you have the wrong mattress.
If your mattress is too firm, you can get around it by using this “five pillow” method:
Click Here If The Embedded Video Doesn’t Load Automatically
If your mattress is too soft, then sorry, you really just have to throw that thing out and start again.
The Goldilocks mattress
While different people will have different subjective preferences, the science is quite clear on what is actually best for people’s spines. As this review of 39 qualified scholarly articles concluded:
❝Results of this systematic review show that a medium-firm mattress promotes comfort, sleep quality and rachis alignment❞
~ Dr. Gianfilippo Caggiari et al.
Read in full: What type of mattress should be chosen to avoid back pain and improve sleep quality? Review of the literature
Note: to achieve “medium-firm” that remains “medium firm” has generally been assumed to require a memory-foam mattress.
How memory-foam works: memory-foam is a moderately thermosoftening material, designed to slightly soften at the touch of human body temperature, and be firmer at room temperature. This will result in it molding itself to the form of a human body, providing what amounts to personalized support for your personal shape and size, meaning your spine can stay exactly as it’s supposed to when you’re sleeping on your side, instead of (for example) your hips being wider meaning that your lumbar vertebrae are raised higher than your thoracic vertebrae, giving you the equivalent of a special nocturnal scoliosis.
It will, therefore, stop working if
- the ambient temperature is comparable to human body temperature (as happens in some places sometimes, and increasingly often these days)
- you die, and thus lose your body temperature (but in that case, your spinal alignment will be the least of your concerns)
Here’s a good explanation of the mechanics of memory foam from the Sleep Foundation:
Sleep Foundation | What is Memory Foam?
An alternative to memory foam?
If you don’t like memory foam (one criticism is that it doesn’t allow good ventilation underneath the body), there is an alterative, the grid mattress.
It’s very much “the new kid on the block” and the science is young for this, but for example this recent (April 2024) study that concluded:
❝The grid mattress is a simple, noninvasive, and nonpharmacological intervention that improved adults sleep quality and health. Controlled trials are encouraged to examine the effects of this mattress in a variety of populations and environments.❞
~ Dr. Heather Hausenblas et al.
Read in full: Effectiveness of a grid mattress on adults’ sleep quality and health: A quasi-experimental intervention study
However, that was a small (n=39) uncontrolled (i.e. there was no control group) study, and the conflict of interest statement is, well, interesting:
❝Heather A. Hausenblas, Stephanie L. Hooper, Martin Barragan, and Tarah Lynch declare no conflict of interest. Michael Breus served as a former consultant for Purple, LLC.❞
~ Ibid.
…which is a fabulous way of distracting from the mention in the “Acknowledgements” section to follow, that…
❝Purple, LLC, provided financial support for the study❞
~ Ibid.
Purple is the company that invented the mattress being tested. So while this doesn’t mean the study is necessarily dishonest and/or corrupt, it does at the very least raise a red flag for a potential instance of publication bias (because Purple may have funded multiple studies and then pulled funding of the ones that weren’t going their way).
If you are interested in Purple’s mattress and how it works, you can check it out here ← this is a link for your interest and information; not an advertisement or an endorsement. We look forward to seeing more science for this though, and echo their own call for randomized controlled trials!
Summary
Sleep is important, and while it’s a popular myth that we need less as we get older, the truth is that we merely get less on average, while still needing the same amount.
A medium-firm memory-foam mattress is a very good, well-evidenced way to support that (both figuratively and literally!).
A grid mattress is an interesting innovation, and/but we’d like to see more science for it.
Take care!
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The Vagus Nerve’s Power for Weight Loss
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Dr. Arun Dhir is a university lecturer, a gastrointestinal surgeon, an author, and a yoga and meditation instructor, and he has this to say:
Gut feelings
The vagus nerve is the 10th cranial nerve, also known as “vagus” (“the wanderer”), because it travels from the brain to many other body parts, including the ears, throat, heart, respiratory system, gut, pancreas, liver, and reproductive system. It’s no surprise then, that it plays a key role in brain-gut communication and metabolism regulation.
The vagus nerve is part of the parasympathetic nervous system, responsible for rest, digestion, and counteracting the stress response. Most signals through the vagus nerve travel from the gut to the brain, though there is communication in both directions.
You may be beginning to see how this works and its implications for weight management: the vagus nerve senses metabolites from the liver, pancreas, and small intestine, and regulates insulin production by stimulating beta cells in the pancreas, which is important for avoiding/managing insulin resistance and metabolic syndrome in general.
Dr. Dhir cites a study in which vagus nerve stimulation (originally used for treating epilepsy and depression) was shown to cause unintentional weight loss (6-11%) in patients, revealing a link to weight management. Of course, that is quite a specific sample, so more research is needed to say for sure, but because the principle is very sound and the mechanism of action is clear, it’s not being viewed as a controversial conclusion.
As for how get these benefits, here are seven ways:
- Cold water on the face: submerge your face in cold water in the morning while holding water in your mouth, or cover your face with a cold wet washcloth (while holding your breath please; no need to waterboard yourself!), which activates the “mammalian dive response” in which your body activates the parasympathetic nervous system in order to remain calm and thus survive for longer underwater
- Alternate hot and cold showers: switch between hot and cold water during showers for 10-second intervals; this creates eustress and activates the process of hormesis, improving your overall stress management and reducing any chronic stress response you may otherwise have going on
- Humming and gargling: the vibrations in the throat stimulate the nearby vagus nerve
- Deep breathing (pranayama): yoga breathing exercises, especially combined with somatic exercises such as the sun salutation, can stimulate the vagus nerve
- Intermittent fasting: helps recalibrate the metabolism and indirectly improves vagus nerve function
- Massage and acupressure: stimulates lymphatic channels and the vagus nerve
- Long walks in nature (“forest bathing”): helps trigger relaxation in general
For more on all of this, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
The Vagus Nerve (And How You Can Make Use Of It)
Take care!
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Fall Special
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Some fall-themed advice…
It is now, nominally at least, fall. We’re going to talk about the other kind of “fall” though, the kind that results in broken hips and more.
If you’re thinking “not me; that happens to older more infirm people”, rest assured, it can and statistically probably will happen to you at some point. So, how to play the odds?
First, be robust!
We may not be able to make ourselves like children who bounce easily, but we also don’t have to crumble into dust at the slightest knock, either. There are two important ways we can start to make ourselves robust from the inside out, and they are simple: diet and exercise.
- Diet: The Bare-Bones Truth About Osteoporosis
- Exercise: Osteoporosis Exercises
“But I don’t have osteoporosis”—great! But osteoporosis is preceded by osteopenia, which is generally asymptomatic at first, and also if we’re not very careful about it, we will lose about 1% bone density per year from the age of about 35 onwards, with that rate of loss climbing sharply from the age of 50 onwards, and even more steeply in cases of untreated menopause.
So in other words, don’t take your bone strength for granted; there’s a first time for everything, and you don’t want to find out the hard (and yet, dare we say it, brittle) way.
Second, be dynamic!
Be able to fall and get up safely. If your later life is going to be a triathlon of things you need to train for now, then being able to fall and get up safely should be at the top of the list.
Being able to “deep squat” will help you a lot here, in being able to get up with minimal (or no) use of your hands. We shared a great instructional video about this last week.
It also means that the more your lower body can still take your weight while your torso is closer to the ground (without your legs buckling and collapsing, for instance), the softer and gentler you’ll hit the floor if you do fall, because the final “drop” will be from a lower height.
If at all possible, consider taking some classes of a martial art that involves safely falling—aikido is typically the softest and gentlest and is famously great for people of all ages, but judo or jujitsu will suffice if aikido isn’t available where you are. You don’t have to get a black belt (unless you want to), and any decent instructor will be happy to guide you through the basics of safely falling and then send you on your merry way, if that’s all you wanted.
The benefits of this are twofold:
- Obviously, if you fall, you will have better technique and thus be less likely to incur injury
- As you are falling, you will be less afraid, and thus less likely to tense up mid-fall (tensing up will exacerbate any falling injury)
Click here to find an aikido teacher near you (you can search by country, state, and city)
Third, be balanced!
Spending even just a few minutes each day working on your balance can go a long way.
Standing on one leg (and then the other) is a very good obvious starting point. Please, do so safely. The shower is not the best place to take up this practice, for instance. A nice safe grassy area is great. Your carpeted living room or bedroom is next-best.
Another great approach is the practice of bāguàzhǎng circle-walking.
Bāguà is tai chi’s lesser-known cousin, and those arts are two of the three main schools of wǔdāngquán. But, fear not, you don’t have to don orange robes and live atop the Wudang mountains to get what you need in this case.
To give a text-based summary: bāguàzhǎng circle-walking involves walking in a small circle, with a low center of gravity, moving one’s weight very purposefully from one leg to the other, keeping complete stability the whole time that one is (often!) on one leg.
Once you get good at this, you’ll see that this is essentially a super-enhanced version of the “standing on one leg” exercise, because it’s about keeping balance while on one leg, and/but while moving also.
Naturally, if you do get good at this, you’ll be very unlikely to fall in the first place.
Here’s a visual primer. This video will show the basic footwork, and the video that follows it (it’ll prompt you if you want to watch it) shows how to bring it up to a standard walking speed, without losing fluidity of movement:
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The Plant Power Doctor
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.
A Prescription For GLOVES
This is Dr. Gemma Newman. She’s a GP (General Practitioner, British equivalent to what is called a family doctor in America), and she realized that she was treating a lot of patients while nobody was actually getting better.
So, she set out to help people actually get better… But how?
The biggest thing
The single biggest thing she recommends is a whole foods plant-based diet, as that’s a starting point for a lot of other things.
Click here for an assortment of short videos by her and other health professionals on this topic!
Specifically, she advocates to “love foods that love you back”, and make critical choices when deciding between ingredients.
Click here to see her recipes and tips (this writer is going to try out some of these!)
What’s this about GLOVES?
We recently reviewed her book “Get Well, Stay Well: The Six Healing Health Habits You Need To Know”, and now we’re going to talk about those six things in more words than we had room for previously.
They are six things that she says we should all try to get every day. It’s a lot simpler than a lot of checklists, and very worthwhile:
Gratitude
May seem like a wishy-washy one to start with, but there’s a lot of evidence for this making a big difference to health, largely on account of how it lowers stress and anxiety. See also:
How To Get Your Brain On A More Positive Track (Without Toxic Positivity)
Love
This is about social connections, mostly. We are evolved to be a social species, and while some of us want/need more or less social interaction than others, generally speaking we thrive best in a community, with all the social support that comes with that. See also:
How To Beat Loneliness & Isolation
Outside
This is about fresh air and it’s about moving and it’s about seeing some green plants (and if available, blue sky), marvelling at the wonder of nature and benefiting in many ways. See also:
Vegetables
We spoke earlier about the whole foods plant-based diet for which she advocates, so this is that. While reducing/skipping meat etc is absolutely a thing, the focus here is on diversity of vegetables; it is best to make a game of seeing how many different ones you can include in a week (not just the same three!). See also:
Three Critical Kitchen Prescriptions
Exercise
At least 150 minutes moderate exercise per week, and some kind of resistance work. It can be calisthenics or something; it doesn’t have to be lifting weights if that’s not your thing! See also:
Resistance Is Useful! (Especially As We Get Older)
Sleep
Quality and quantity. Yes, 7–9 hours, yes, regardless of age. Unless you’re a child or a bodybuilder, in which case make it nearer 12. But for most of us, 7–9. See also:
Why You Probably Need More Sleep
Want to know more?
As well as the book we mentioned earlier, you might also like:
The Plant Power Doctor – by Dr. Gemma Newman
While the other book we mentioned is available for pre-order for Americans (it’s already released for the rest of the world), this one is available to all right now, so that’s a bonus too.
If books aren’t your thing (or even if they are), you might like her award-winning podcast:
Take care!
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Qigong: A Breath Of Fresh Air?
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Qigong: Breathing Is Good (Magic Remains Unverified)
In Tuesday’s newsletter, we asked you for your opinions of qigong, and got the above-depicted, below-described, set of responses:
- About 55% said “Qigong is just breathing, but breathing exercises are good for the health”
- About 41% said “Qigong helps regulate our qi and thus imbue us with healthy vitality”
- One (1) person said “Qigong is a mystical waste of time and any benefits are just placebo”
The sample size was a little low for this one, but the results were quite clearly favorable, one way or another.
So what does the science say?
Qigong is just breathing: True or False?
True or False, depending on how we want to define it—because qigong ranges in its presentation from indeed “just breathing exercises”, to “breathing exercises with visualization” to “special breathing exercises with visualization that have to be exactly this way, with these hand and sometimes body movements also, which also must be just right”, to far more complex definitions that involve qi by various mystical definitions, and/or an appeal to a scientific analog of qi; often some kind of bioelectrical field or such.
There is, it must be said, no good quality evidence for the existence of qi.
Writer’s note, lest 41% of you want my head now: I’ve been practicing qigong and related arts for about 30 years and find such to be of great merit. This personal experience and understanding does not, however, change the state of affairs when it comes to the availability (or rather, the lack) of high quality clinical evidence to point to.
Which is not to say there is no clinical evidence, for example:
Acute Physiological and Psychological Effects of Qigong Exercise in Older Practitioners
…found that qigong indeed increased meridian electrical conductance!
Except… Electrical conductance is measured with galvanic skin responses, which increase with sweat. But don’t worry, to control for that, they asked participants to dry themselves with a towel. Unfortunately, this overlooks the fact that a) more sweat can come where that came from, because the body will continue until it is satisfied of adequate homeostasis, and b) drying oneself with a towel will remove the moisture better than it’ll remove the salts from the skin—bearing in mind that it’s mostly the salts, rather than the moisture itself, that improve the conductivity (pure distilled water does conduct electricity, but not very well).
In other words, this was shoddy methodology. How did it pass peer review? Well, here’s an insight into that journal’s peer review process…
❝The peer-review system of EBCAM is farcical: potential authors who send their submissions to EBCAM are invited to suggest their preferred reviewers who subsequently are almost invariably appointed to do the job. It goes without saying that such a system is prone to all sorts of serious failures; in fact, this is not peer-review at all, in my opinion, it is an unethical sham.❞
~ Dr. Edzard Ernst, a founding editor of EBCAM (he since left, and decries what has happened to it since)
One of the other key problems is: how does one test qigong against placebo?
Scientists have looked into this question, and their answers have thus far been unsatisfying, and generally to the tune of the true-but-unhelpful statement that “future research needs to be better”:
Problems of scientific methodology related to placebo control in Qigong studies: A systematic review
Most studies into qigong are interventional studies, that is to say, they measure people’s metrics (for example, blood pressure, heart rate, maybe immune function biomarkers, sleep quality metrics of various kinds, subjective reports of stress levels, physical biomarkers of stress levels, things like that), then do a course of qigong (perhaps 6 weeks, for example), then measure them again, and see if the course of qigong improved things.
This almost always results in an improvement when looking at the before-and-after, but it says nothing for whether the benefits were purely placebo.
We did find one study that claimed to be placebo-controlled:
…but upon reading the paper itself carefully, it turned out that while the experimental group did qigong, the control group did a reading exercise. Which is… Saying how well qigong performs vs reading (qigong did outperform reading, for the record), but nothing for how well it performs vs placebo, because reading isn’t a remotely credible placebo.
See also: Placebo Effect: Making Things Work Since… Well, A Very Long Time Ago ← this one explains a lot about how placebo effect does work
Qigong is a mystical waste of time: True or False?
False! This one we can answer easily. Interventional studies invariably find it does help, and the fact remains that even if placebo is its primary mechanism of action, it is of benefit and therefore not a waste of time.
Which is not to say that placebo is its only, or even necessarily primary, mechanism of action.
Even from a purely empirical evidence-based medicine point of view, qigong is at the very least breathing exercises plus (usually) some low-impact body movement. Those are already two things that can be looked at, mechanistic processes pointed to, and declarations confidently made of “this is an activity that’s beneficial for health”.
See for example:
- Effects of Qigong practice in office workers with chronic non-specific low back pain: A randomized control trial
- Qigong for the Prevention, Treatment, and Rehabilitation of COVID-19 Infection in Older Adults
- Impact of Medical Qigong on quality of life, fatigue, mood and inflammation in cancer patients: a randomized controlled trial
…and those are all from respectable journals with meaningful peer review processes.
None of them are placebo-controlled, because there is no real option of “and group B will only be tricked into believing they are doing deep breathing exercises with low-impact movements”; that’s impossible.
But! They each show how doing qigong reliably outperforms not doing qigong for various measurable metrics of health.
And, we chose examples with physical symptoms and where possible empirically measurable outcomes (such as COVID-19 infection levels, or inflammatory responses); there are reams of studies showings qigong improves purely subjective wellbeing—but the latter could probably be claimed for any enjoyable activity, whereas changes in inflammatory biomarkers, not such much.
In short: for most people, it indeed reliably helps with many things. And importantly, it has no particular risks associated with it, and it’s almost universally framed as a complementary therapy rather than an alternative therapy.
This is critical, because it means that whereas someone may hold off on taking evidence-based medicines while trying out (for example) homeopathy, few people are likely to hold off on other treatments while trying out qigong—since it’s being viewed as a helper rather than a Hail-Mary.
Want to read more about qigong?
Here’s the NIH’s National Center for Complementary and Integrative Health has to say. It cites a lot of poor quality science, but it does mention when the science it’s citing is of poor quality, and over all gives quite a rounded view:
Enjoy!
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Triple Life Threat – by Donald R. Lyman
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This book takes a similar approach to “How Not To Die” (which we featured previously), but focussed specifically on three things, per the title: chronic pulmonary obstructive disease (CPOD), diabetes (type 2), and Alzheimer’s disease.
Lyman strikes a great balance of being both information-dense and accessible; there’s a lot of reference material in here, and the reader is not assumed to have a lot of medical knowledge—but we’re not patronized either, and this is an informative manual, not a sensationalized scaremongering piece.
All in all… if you have known risk factors for one or more of three diseases this book covers, the information within could well be a lifesaver.
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