Why You Probably Need More Sleep
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Sleep: yes, you really do still need it!
We asked you how much sleep you usually get, and got the above-pictured, below-described set of responses:
- A little of a third of all respondents selected the option “< 7 hours”
- However, because respondents also selected options such as < 6 hours, < 5 hours, and < 4 hours, so if we include those in the tally, the actual total percentage of respondents who reported getting under 7 hours, is actually more like 62%, or just under two thirds of all respondents.
- Nine respondents, which was about 5% of the total, reported usually getting under 4 hours sleep
- A little over quarter of respondents reported usually getting between 7 and 8 hours sleep
- Fifteen respondents, which was a little under 10% of the total, reported usually getting between 8 and 9 hours of sleep
- Three respondents, which was a little under 2% of the total, reported getting over 9 hours of sleep
- In terms of the classic “you should get 7–9 hours sleep”, approximately a third of respondents reported getting this amount.
You need to get 7–9 hours sleep: True or False?
True! Unless you have a (rare!) mutated ADRB1 gene, which reduces that.
The way to know whether you have this, without genomic testing to know for sure, is: do you regularly get under 6.5 hours sleep, and yet continue to go through life bright-eyed and bushy-tailed? If so, you probably have that gene. If you experience daytime fatigue, brain fog, and restlessness, you probably don’t.
About that mutated ADRB1 gene:
NIH | Gene identified in people who need little sleep
Quality of sleep matters as much as duration, and a lot of studies use the “RU-Sated” framework, which assesses six key dimensions of sleep that have been consistently associated with better health outcomes. These are:
- regularity / usual hours
- satisfaction with sleep
- alertness during waking hours
- timing of sleep
- efficiency of sleep
- duration of sleep
But, that doesn’t mean that you can skimp on the last one if the others are in order. In fact, getting a good 7 hours sleep can reduce your risk of getting a cold by three or four times (compared with six or fewer hours):
Behaviorally Assessed Sleep and Susceptibility to the Common Cold
^This study was about the common cold, but you may be aware there are more serious respiratory viruses freely available, and you don’t want those, either.
Napping is good for the health: True or False?
True or False, depending on how you’re doing it!
If you’re trying to do it to sleep less in total (per polyphasic sleep scheduling), then no, this will not work in any sustainable fashion and will be ruinous to the health. We did a Mythbusting Friday special on specifically this, a while back:
Could Just Two Hours Sleep Per Day Be Enough?
PS: you might remember Betteridge’s Law of Headlines
If you’re doing it as a energy-boosting supplement to a reasonable night’s sleep, napping can indeed be beneficial to the health, and can give benefits such as:
However! There is still a right and a wrong way to go about it, and we wrote about this previously, for a Saturday Life Hacks edition of 10almonds:
How To Nap Like A Pro (No More “Sleep Hangovers”!)
As we get older, we need less sleep: True or False
False, with one small caveat.
The small caveat: children and adolescents need 9–12 hours sleep because, uncredited as it goes, they are doing some seriously impressive bodybuilding, and that is exhausting to the body. So, an adult (with a normal lifestyle, who is not a bodybuilder) will tend to need less sleep than a child/adolescent.
But, the statement “As we get older, we need less sleep” is generally taken to mean “People in the 65+ age bracket need less sleep than younger adults”, and this popular myth is based on anecdotal observational evidence: older people tend to sleep less (as our survey above shows! For any who aren’t aware, our readership is heavily weighted towards the 60+ demographic), and still continue functioning, after all.
Just because we survive something with a degree of resilience doesn’t mean it’s good for us.
In fact, there can be serious health risks from not getting enough sleep in later years, for example:
Sleep deficiency promotes Alzheimer’s disease development and progression
Want to get better sleep?
What gets measured, gets done. Sleep tracking apps can be a really good tool for getting one’s sleep on a healthier track. We compared and contrasted some popular ones:
The Head-To-Head Of Google and Apple’s Top Apps For Getting Your Head Down
Take good care of yourself!
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The Evidence-Based Skincare That Beats Product-Specific Hype
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A million videos on YouTube will try to sell you a 17-step skincare routine, or a 1-ingredient magical fix that’s messy and inconvenient enough you’ll do it once and then discard it. This one takes a simple, scientific approach instead.
The Basics That Count
Ali Abdaal, known for his productivity hacks channel, enlisted the help of his friend, dermatologist Dr. Usama Syed, who recommends the following 3–4 things:
- Moisturize twice per day. Skin acts as a barrier, locking in moisture and protecting against irritants. Moisturizers replenish fats and proteins, maintaining this barrier and preventing dry, inflamed, and itchy skin. He uses CeraVe, but if you have one you know works well with your skin, stick with that, because skin comes in many varieties and yours might not be like his.
- Use sunscreen every day. Your phone’s weather app should comment on your local UV index. If it’s “moderate” or above, then sunscreen is a must—even if you aren’t someone who burns easily at all, the critical thing here is avoiding UV radiation causing DNA mutations in skin cells, leading to wrinkles, dark spots, and potentially skin cancer. Use a broad-spectrum sunscreen, ideally SPF 50.
- Use a retinoid. Retinoids are vitamin A-based and offer anti-aging benefits by promoting collagen growth, reducing pigmentation, and accelerating skin cell regeneration. Retinols are weaker, over-the-counter options, while stronger retinoids may require a prescription. Start gently with low dosage, whatever you choose, as initially they can cause dryness or sensitivity, before making everything better. He recommends adapalene as a starter retinoid (such as Differen gel, to give an example brand name).
- Optional: use a cleanser. Cleansers remove oils and dirt that water alone can’t. He recommends using a hydrating cleanser, to avoid stripping natural healthy oils as well as unwanted ones. That said, a cleanser is probably only beneficial if your skin tends towards the oily end of the dry-to-oily spectrum.
For more on all of these, plus an example routine, enjoy:
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Want to learn more?
You might also like to read:
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Sciatica Exercises & Home Treatment – by Dr. George Best
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Dr. Best is a doctor of chiropractic, but his work here is compelling. He starts by giving an overview of the relevant anatomy, and then the assorted possible causes of sciatica, before moving on to the treatments.
As is generally the case for chiropractic, nothing here will be “cured”, but it will give methods for ongoing management to keep you pain-free—which in the case of sciatica, is usually the single biggest thing that most people suffering from it most dearly want.
We get to read a lot about self-massage and exercises, of the (very well-evidenced; about the most well-evidenced thing there is for back pain) McKenzie technique exercises, as well as assorted acupressure-based techniques that are less well-evidenced but have good anecdotal support.
He also writes about preventing sciatica—which if you already have it, that doesn’t mean it’s too late; it just means, in that case do these things (along with the aforementioned exercises) to gradually reverse the harm done and get back to where you were pre-sciatica.
Lastly, he does also speak on when signs might point to your problems being beyond the scope of this book, and seeking professional examination if you haven’t already.
The style throughout is straight to the point, informative, and instructional. There is zero fluff or padding, and no sensationalization. There are diagrams and illustrative photos where appropriate.
Bottom line: if you have, or fear the threat of, sciatica, then this is an excellent book to have and use its exercises.
Click here to check out Sciatica Exercises & Home Treatment, and live pain-free!
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Top 10 Early Warning Signs Of Dementia
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What’s a harmless momentary mind-blank, and what’s a potential warning sign of dementia? Dementia Careblazers, a dementia care organization, has input:
The signs
With the caveat that this is a list of potential warning signs, not a diagnostic tool, the 10 signs are:
- Memory loss: e.g. forgetting important or well-learned information, such as one’s home address
- Challenges in planning or solving problems: e.g. difficulty with tasks such as paying bills (for organizational rather than financial reasons), following recipes, or managing medications
- Difficulty completing familiar tasks: e.g. trouble remembering rules of a familiar game, or directions to a familiar place
- Confusion with place or time: e.g. forgetting where one is, or making mistakes with the date, season, or other time-related details. Note that anyone can be momentarily unsure of today’s date, but if someone thinks it’s 1995, probably something wrong is not quite right. Similarly, being wrong about who is the current national leader is often used as a test, too—assuming countries with enough political stability to not have five different national leaders in the past four years, including one who did not outlast a lettuce *side-eyeing the UK*
- Trouble understanding visual images and spatial relationships: e.g. increased clumsiness, difficulty parking, or bumping into objects
- New problems with speaking or writing: e.g. losing track in conversations, or struggling to find the right words
- Misplacing things: e.g. losing items and being unable to retrace one’s steps to find them
- Decreased or poor judgment: e.g. falling for scams, giving out too much information or money without investigating appropriately first
- Withdrawal from social activities or hobbies: e.g. losing interest in activities one used to enjoy or avoiding social interactions
- Changes in mood and personality: e.g. increased irritability, anxiety, or other noticeable changes in behavior and personality
For more information on each of these, enjoy:
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Want to learn more?
You might also like to read:
Dementia: Spot The Signs (Because None Of Us Are Immune)
Take care!
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This Book May Save Your Life – by Dr. Karan Rajan
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The title is a bold sell, but the book does include a lot of information about what can go wrong in your body, and how those things can be avoided.
What it’s not: a reiteration of Dr. Michael Greger’s “How Not To Die“. It’s not dense medical information, and it doesn’t cite papers at a rate of ten per page.
What it is: an easy-reading tour guide of the human body and its many quirks and foibles, and how we can leverage those to our benefit. On which note…
Hopefully, your insides will never see the light of day, but this author is a general surgeon and as such, is an experienced and well-qualified tour guide. Here, we learn about everything from the long and interesting journey through our gut, to the unique anatomical features and liabilities of the brain. From the bizarre oddities of the genitals, to things most people don’t know about the process of death.
The style of the book is very casual, with lots of short sections (almost mini chapters-within-chapters, really) making for very light reading—and certainly enjoyable reading too, unless you are inclined to squeamishness.
Bottom line: in honesty, the book is more informative than it is instructional, though it does contain the promised health tips too. With that in mind, it’s a very enjoyable and educational read, and we do recommend it.
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The Art and Science of Connection – by Kasley Killam, MPH
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We can eat well, exercise well, and even sleep well, and we’ll still have a +53% increased all-cause mortality if we lack social connection—even if we technically have support and access to social resources, just not the real human connection itself. And as we get older, it gets increasingly easy to find ourselves isolated.
The author is a social scientist by profession, and it shows. None of what she shares in the book is wishy-washy; it has abundant scientific references coming thick and fast, and a great deal of clarity with regard to terms, something often not found in books of this genre that lean more towards the art than the science.
On which note, for the reader who may be thinking “I am indeed quite alone”, she also offers proven techniques for remedying that; not in the way that many books use the word “proven” to mean “we got some testimonials”, but rather, proven in the sense of “we did science to it and based on these 17 large population-based retrospective cohort studies, we can say with 99% confidence that this is an effective tool to mediate improved social bonds and social health outcomes”.
To this end, it’s a very practical book also, and should bestow upon any isolated reader a sense of confidence that in fact, things can be better. A particular strength is that it also looks at many different scenarios, so for the “what if I…” people with clear reasons why social connection is not abundantly available, yes, she has such cases covered too.
Bottom line: if you’d like to live more healthily for longer, social health is an underrated and oft-forgotten way of greatly increasing those things, by science.
Click here to check out The Art And Science Of Social Connection, and get connected!
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How to Eat 30 Plants a Week – by Hugh Fearnley-Whittingstall
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If you’re used to eating the same two fruits and three vegetables in rotation, the “gold standard” evidence-based advice to “eat 30 different plants per week” can seem a little daunting.
Where this book excels is in reminding the reader to use a lot of diverse plants that are readily available in any well-stocked supermarket, but often get forgotten just because “we don’t buy that”, so it becomes invisible on the shelf.
It’s not just a recipe book (though yes, there are plenty of recipes here); it’s also advice about stocking up and maintaining that stock, advice on reframing certain choices to inject a little diversity into every meal without it become onerous, meal-planning rotation advice, and a lot of recipes that are easy but plant-rich, for example “this soup that has these six plants in it”, etc.
He also gives, for those eager to get started, “10 x 3 recipes per week to guarantee your 30”, in other words, 10 sets of 3 recipes, wherein each set of 3 recipes uses >30 different plants between them, such that if we have each of these set-of-three meals over the course of the week, then what we do in the other 4–18 meals (depending on how many meals per day you like to have) is all just a bonus.
The latter is what makes this book an incredibly stress-free approach to more plant-diverse eating for life.
Bottom line: if you want to be able to answer “do you get your five-a-day?” with “you mean breakfast?” because you’ve already hit five by breakfast each day, then this is the book for you.
Click here to check out How To Eat 30 Plants A Week, and indeed eat 30+ different plants per week!
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