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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Chromium Picolinate For Blood Sugar Control & Weight Loss
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First, a quick disambiguation:
- chromium found in food, trivalent chromium of various kinds, is safe (in the quantities usually consumed) and is sometimes considered an essential mineral, sometimes considered unnecessary but beneficial. It’s hard to know for sure, since it’s in a lot of foods (naturally, like many trace elements)
- chromium found in pollution, hexavalent chromium (so: twice as many cationic bonds, if this writer’s chemistry serves her correctly) is poisonous.
We’re going to be writing about the food kind, which is also possible to take as a supplement.
In this case, supplementing vs getting from food is quite a big difference, by the way, since (unlike for a lot of things, which are often the other way around) the bioavailability of chromium from food is very low (around 2.5%), whereas chromium picolinate, one of the most commonly-used supplement forms, boasts higher bioavailability.
Does it work for blood sugars?
Yes, it does! At least, it does in the case of people with type 2 diabetes. Rather than bombard you with many individual studies, here’s a systematic review and meta-analysis of 22 criteria-meeting randomized clinical trials that found:
❝The available evidence suggests favourable effects of chromium supplementation on glycaemic control in patients with diabetes.
Chromium monosupplement may additionally improve triglycerides and HDL-C levels.❞
Type 1 diabetes does not have anything like the same weight of evidence, and indeed,
we couldn’t find a single human study. It was beneficial for mice with artificially-induced T1D, thoughwait no, we have an update! We found literally a single human study:Chromium picolinate supplementation for diabetes mellitus
Literally, as in: it’s a case study of one person, and the results were a modest reduction in Hb A1c levels after 3 months of 600μg daily; the researchers concluded that ❝chromium picolinate continues to fall squarely within the scope of “alternative medicine,” with both unproven benefits and unknown risks❞.
As for people without diabetes, it may reduce the risk of diabetes:
Risk of Type 2 Diabetes Is Lower in US Adults Taking Chromium-Containing Supplements
However! This was an observational study, and correlation ≠ causation.
Furthermore, they said:
❝Over one-half the adult US population consumes nutritional supplements, and over one-quarter consumes supplemental chromium. The odds of having T2D were lower in those who, in the previous 30 d, had consumed supplements containing chromium❞
That “over one-quarter consumes supplemental chromium” brought our attention to the fact that this is not talking about specifically chromium “monosupplements” (definitely not quarter of the adult population take those), but rather, “multivitamin and mineral” supplements that also contain a tiny amount (often under 50μg) of chromium.
In other words, this ruins the data and honestly the benefit could have been from anything in the “multivitamin and mineral” supplement, or indeed, could just be “the kind of person who takes supplements is the kind of person who lives a lifestyle that is less conducive to becoming diabetic”.
Does it work for weight loss?
We’re running out of space here, so we’ll be brief:
No.
There are many papers that have concluded this, but here are two:
Chromium picolinate supplementation for overweight or obese adults
and
Is it safe?
Science’s current best answer is “we don’t know; it hasn’t been tested enough; we haven’t even established the tolerable upper limit, which is usually step 1 of establishing safety”.
Nor is there an estimated average requirement (if indeed there even is a requirement, which question is also not as yet answered conclusively by science), and science falls back to “here’s an average of what people consume in their diet, so that’s probably safe, we guess”.
(that average was reckoned as 25μg/day for young women and 25μg/day for young men, by the way; older ages not as yet reckoned)
You can read about this sorry state of affairs here.
Want to try some?
Notwithstanding the above lack of data for safety, it does have benefits for blood sugars, so if that’s a gamble you’re willing to make, then here’s an example product on Amazon.
Note: the dosage per capsule there (800μg) is half of the low end of the dose that was implicated in the serious kidney condition caused in this case study (1200–2400μg), so if you are going to try it, we strongly recommend not taking more than one per day.
Take care!
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The Kitchen Prescription – by Saliha Mahmood Ahmed
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One of the biggest challenges facing anyone learning to cook more healthily, is keeping it tasty. What to cook when your biggest comfort foods all contain things you “should” avoid?
Happily for us, Dr. Ahmed is here with a focus on comfort food that’s good for your gut health. It’s incidentally equally good for the heart and good against diabetes… but Dr. Ahmed is a gastroenterologist, so that’s where she’s coming from with these.
There’s a wide range of 101 recipes here, including many tagged vegetarian, vegan, and/or gluten-free, as appropriate.
While this is not a vegetarian cookbook, Dr. Ahmed does consider the key components of a good diet to be, in order of quantity that should be consumed:
- Fruits and vegetables
- Whole grains
- Legumes
- Pulses
- Nuts and seeds
…and as such, the recipes are mostly plant-based.
The recipes are from all around the world, and/but the ingredients are mostly things that are almost universal. In the event that something might be hard-to-get, she suggests an appropriate substitution.
The recipes are straightforward and clear, as well as being beautifully illustrated.
All in all, a fine addition to anyone’s kitchen!
Get your copy of The Kitchen Prescription from Amazon today!
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Figs vs Banana – Which is Healthier?
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Our Verdict
When comparing figs to banana, we picked the banana.
Why?
Both of these fruits have a reputation for being carb-heavy (though their glycemic index is low in both cases because of the fiber), and they both have approximately the same macros across the board. So a tie on macros.
When it comes to vitamins, figs have more of vitamins A, B1, E, and K, while banana has more of vitamins B2, B3, B5, B6, B9, C, and choline. So, a win for banana there.
In the category of minerals, figs have more calcium and iron, while banana has more copper, magnesium, manganese, phosphorus, potassium, and selenium. Another win for banana.
Adding up the section makes for a win for bananas, but by all means, enjoy either or both; diversity is good!
Want to learn more?
You might like to read:
Which Sugars Are Healthier, And Which Are Just The Same?
Take care!
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No, taking drugs like Ozempic isn’t ‘cheating’ at weight loss or the ‘easy way out’
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Hundreds of thousands of people worldwide are taking drugs like Ozempic to lose weight. But what do we actually know about them? This month, The Conversation’s experts explore their rise, impact and potential consequences.
Obesity medication that is effective has been a long time coming. Enter semaglutide (sold as Ozempic and Wegovy), which is helping people improve weight-related health, including lowering the risk of a having a heart attack or stroke, while also silencing “food noise”.
As demand for semaglutide increases, so are claims that taking it is “cheating” at weight loss or the “easy way out”.
We don’t tell people who need statin medication to treat high cholesterol or drugs to manage high blood pressure they’re cheating or taking the easy way out.
Nor should we shame people taking semaglutide. It’s a drug used to treat diabetes and obesity which needs to be taken long term and comes with risks and side effects, as well as benefits. When prescribed for obesity, it’s given alongside advice about diet and exercise.
How does it work?
Semaglutide is a glucagon-like peptide-1 receptor agonist (GLP-1RA). This means it makes your body’s own glucagon-like peptide-1 hormone, called GLP-1 for short, work better.
GLP-1 gets secreted by cells in your gut when it detects increased nutrient levels after eating. This stimulates insulin production, which lowers blood sugars.
GLP-1 also slows gastric emptying, which makes you feel full, and reduces hunger and feelings of reward after eating.
GLP-1 receptor agonist (GLP-1RA) medications like Ozempic help the body’s own GLP-1 work better by mimicking and extending its action.
Some studies have found less GLP-1 gets released after meals in adults with obesity or type 2 diabetes mellitus compared to adults with normal glucose tolerance. So having less GLP-1 circulating in your blood means you don’t feel as full after eating and get hungry again sooner compared to people who produce more.
GLP-1 has a very short half-life of about two minutes. So GLP-1RA medications were designed to have a very long half-life of about seven days. That’s why semaglutide is given as a weekly injection.
What can users expect? What does the research say?
Higher doses of semaglutide are prescribed to treat obesity compared to type 2 diabetes management (up to 2.4mg versus 2.0mg weekly).
A large group of randomised controlled trials, called STEP trials, all tested weekly 2.4mg semaglutide injections versus different interventions or placebo drugs.
Trials lasting 1.3–2 years consistently found weekly 2.4 mg semaglutide injections led to 6–12% greater weight loss compared to placebo or alternative interventions. The average weight change depended on how long medication treatment lasted and length of follow-up.
Higher doses of semaglutide are prescribed for obesity than for type 2 diabetes. fcm82/Shutterstock Weight reduction due to semaglutide also leads to a reduction in systolic and diastolic blood pressure of about 4.8 mmHg and 2.5 mmHg respectively, a reduction in triglyceride levels (a type of blood fat) and improved physical function.
Another recent trial in adults with pre-existing heart disease and obesity, but without type 2 diabetes, found adults receiving weekly 2.4mg semaglutide injections had a 20% lower risk of specific cardiovascular events, including having a non-fatal heart attack, a stroke or dying from cardiovascular disease, after three years follow-up.
Who is eligible for semaglutide?
Australia’s regulator, the Therapeutic Goods Administration (TGA), has approved semaglutide, sold as Ozempic, for treating type 2 diabetes.
However, due to shortages, the TGA had advised doctors not to start new Ozempic prescriptions for “off-label use” such as obesity treatment and the Pharmaceutical Benefits Scheme doesn’t currently subsidise off-label use.
The TGA has approved Wegovy to treat obesity but it’s not currently available in Australia.
When it’s available, doctors will be able to prescribe semaglutide to treat obesity in conjunction with lifestyle interventions (including diet, physical activity and psychological support) in adults with obesity (a BMI of 30 or above) or those with a BMI of 27 or above who also have weight-related medical complications.
What else do you need to do during Ozempic treatment?
Checking details of the STEP trial intervention components, it’s clear participants invested a lot of time and effort. In addition to taking medication, people had brief lifestyle counselling sessions with dietitians or other health professionals every four weeks as a minimum in most trials.
Support sessions were designed to help people stick with consuming 2,000 kilojoules (500 calories) less daily compared to their energy needs, and performing 150 minutes of moderate-to-vigorous physical activity, like brisk walking, dancing and gardening each week.
STEP trials varied in other components, with follow-up time periods varying from 68 to 104 weeks. The aim of these trials was to show the effect of adding the medication on top of other lifestyle counselling.
Trial participants also exercised for 150 minutes a week. Elena Nichizhenova/Shutterstock A review of obesity medication trials found people reported they needed less cognitive behaviour training to help them stick with the reduced energy intake. This is one aspect where drug treatment may make adherence a little easier. Not feeling as hungry and having environmental food cues “switched off” may mean less support is required for goal-setting, self-monitoring food intake and avoiding things that trigger eating.
But what are the side effects?
Semaglutide’s side-effects include nausea, diarrhoea, vomiting, constipation, indigestion and abdominal pain.
In one study these led to discontinuation of medication in 6% of people, but interestingly also in 3% of people taking placebos.
More severe side-effects included gallbladder disease, acute pancreatitis, hypoglycaemia, acute kidney disease and injection site reactions.
To reduce risk or severity of side-effects, medication doses are increased very slowly over months. Once the full dose and response are achieved, research indicates you need to take it long term.
Given this long-term commitment, and associated high out-of-pocket cost of medication, when it comes to taking semaglutide to treat obesity, there is no way it can be considered “cheating”.
Read the other articles in The Conversation’s Ozempic series here.
Clare Collins, Laureate Professor in Nutrition and Dietetics, University of Newcastle
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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11 Minutes to Pain-Free Hips – by Melinda Wright
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If hips don’t lie, what are yours saying to you? If what they’re saying to you sounds like a cry for help sometimes, this is the book to get you onto a better track.
The hip is the largest joint in your body, and it bears a lot of weight. So it’s little wonder if sometimes they’d like a word with the boss. The question is: what will you do about it? Melinda Wright has suggestions to keep your hips—and you—happy.
She spends the first couple of chapters introducing key concepts, and some anatomy and physiology that’ll be good to know.
Then we’re into resistance stretching, basic hip exercises, all the way through to more advanced stuff. There are very clear photos for each. One thing that stands out about this book is each exercise is not just explained simply and clearly, but also offers “easing oneself in” exercises. After all, we’re not all at the same starting point.
The book finishes off with some more holistic advice about chronic pain management, based on her personal experience with scoliosis, and some dietary tips to reduce joint pain and inflammation too.
All in all, a very helpful book!
Pick up 11 “Minutes to Pain-Free Hips” at Amazon today!
^You will also see options for pain-free back, and pain-free neck, by the same author
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Dates vs Figs – Which is Healthier?
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.
Our Verdict
When comparing dates to figs, we picked the dates.
Why?
Dates are higher in sugar, but also have a lower glycemic index than figs, which makes the sugar content much healthier. On the flipside, figs do have around 3x more fiber.
So far, so balanced.
When it comes to micronutrients though, dates take the prize much more clearly.
Dates have slightly more of most vitamins, and a lot more of most minerals.
In particular, dates are several times higher in copper, iron, magnesium, manganese, phosphorus, selenium, and zinc.
As for other phytochemical benefits going on:
- both are good against diabetes for reasons beyond the macros
- both have anti-inflammatory properties
- dates have anticancer properties
- dates have kidney-protecting properties
So in this last case, another win for dates.
Both are still great though, so do enjoy both!
Want to learn more?
You might like to read:
Which Sugars Are Healthier, And Which Are Just The Same?
Take care!
Don’t Forget…
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