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:
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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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Popcorn vs Peanuts – Which is Healthier
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Our Verdict
When comparing air-popped popcorn to peanuts (without an allergy), we picked the peanuts.
Why?
Peanuts, if we were to list popular nuts in order of healthfulness, would not be near the top of the list. Many other nuts have more nutrients and fewer/lesser drawbacks.
But the comparison to popcorn shines a different light on it:
Popcorn has very few nutrients. It’s mostly carbs and fiber; it’s just not a lot of carbs because the manner of its consumption makes it a very light snack (literally). You can eat a bowlful and it was perhaps 30g. It has some small amounts of some minerals, but nothing that you could rely on it for. It’s mostly fresh air wrapped in fiber.
Peanuts, in contrast, are a much denser snack. High in calories yes, but also high in protein, their fats are mostly healthy, and they have not only a fair stock of vitamins and minerals, but also a respectable complement of beneficial phytochemicals: mostly assorted antioxidant polyphenols, but also oleic acid (as in olives, good for healthy triglyceride levels).
Another thing worth a mention is their cholesterol-reducing phytosterols (these reduce the absorption of dietary cholesterol, “good” and “bad”, so this is good for most people, bad for some, depending on the state of your cholesterol and what you ate near in time to eating the nuts)
Peanuts do have their clear downsides too: its phytic acid content can reduce the bioavailability of iron and zinc taken at the same time.
In summary: while popcorn’s greatest claim to dietary beneficence is its fiber content and that it’s close to being a “zero snack”, peanuts (eaten in moderation, say, the same 30g as the popcorn) have a lot to contribute to our daily nutritional requirements.
We do suggest enjoying other nuts though!
Read more: Why You Should Diversify Your Nuts!
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Dangers Of Root Canals And Crowns, & What To Do Instead
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Dr. Michelle Jorgensen, a dentist, tells us that it’s a lot rarer than people think to actually need a crown or a root canal; there are ways of avoiding such:
The tooth, the whole tooth, and nothing but the tooth?
First, some of the problems with the treatments that are most popular, especially in the US:
Problems with root canals:
- Involves cleaning and filling the tooth’s main canal but leaves microtubules that can harbor dead tissue and attract bacteria.
- This can lead to infections, often undetected for a long time due to the nerve removal, potentially harming overall health and weakening the tooth.
- Root canals often result in brittle teeth that can break, necessitating crowns.
And then…
Problems with crowns:
- A crown requires significant removal of tooth structure (up to 1.5 mm of enamel), making the tooth more vulnerable and sensitive.
- Crowns can also lead to new cavities underneath due to weak bonding to dentin.
- The cycle often leads from a healthy tooth to fillings, crowns, root canals, and eventual extraction (and then, perhaps, an implant in its place). That’s great for the dentist, but not so great for you.
Biomimetic dentistry the exciting name currently being used for what has been more prosaically called “conservative restorative dentistry”, which in turn has also been known by other names in recent decades, and its goal is to strengthen and preserve natural teeth as much as possible.
Methods it uses:
- Treats affected but still living teeth with non-invasive procedures.
- Uses ozone treatment to kill bacteria in deep cavities, avoiding direct nerve exposure.
- Applies conservative partial restorations like onlays instead of full crowns.
Benefits of this approach:
- Preserves enamel, minimizes trauma, and reduces the risk of tooth death.
- Maintains long-term tooth structure and health.
- 95% success rate in saving affected teeth without resorting to root canals.
In short, Dr. Jorgensen says that 60–80% of traditional crowns and root canals can be avoided. Which is surely a good thing.
For more on all of this, enjoy:
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Want to learn more?
You might also like:
Tooth Remineralization: How To Heal Your Teeth Naturally
Take care!
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Sleep wrinkles are real. Here’s how they leave their mark
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You wake up, stagger to the bathroom and gaze into the mirror. No, you’re not imagining it. You’ve developed face wrinkles overnight. They’re sleep wrinkles.
Sleep wrinkles are temporary. But as your skin loses its elasticity as you age, they can set in.
Here’s what you can do to minimise the chance of them forming in the first place.
How side-sleeping affects your face
Your skin wrinkles for a number of reasons, including ageing, sun damage, smoking, poor hydration, habitual facial expressions (such as grinning, pouting, frowning, squinting) and sleeping positions.
When you sleep on your side or stomach, your face skin is squeezed and crushed a lot more than if you sleep on your back. When you sleep on your side or stomach, gravity presses your face against the pillow. Your face skin is distorted as your skin is stretched, compressed and pulled in all directions as you move about in your sleep.
You can reduce these external forces acting on the face by sleeping on your back or changing positions frequently.
Doctors can tell which side you sleep on by looking at your face
In a young face, sleep wrinkles are transient and disappear after waking.
Temporary sleep wrinkles can become persistent with time and repetition. As we age, our skin loses elasticity (recoil) and extensibility (stretch), creating ideal conditions for sleep wrinkles or lines to set in and last longer.
The time spent in each sleeping position, the magnitude of external forces applied to each area of the face, as well as the surface area of contact with the pillow surface, also affects the pattern and rate of sleep wrinkle formation.
Skin specialists can often recognise this. People who favour sleeping on one side of their body tend to have a flatter face on their sleeping side and more visible sleep lines.
Can a night skincare routine avoid sleep wrinkles?
Collagen and elastin are two primary components of the dermis (inner layer) of skin. They form the skin structure and maintain the elasticity of skin.
The dermis is the inner layer of skin. mermaid3/Shutterstock Supplementing collagen through skincare routines to enhance skin elasticity can help reduce wrinkle formation.
Hyaluronic acid is a naturally occurring molecule in human bodies. It holds our skin’s collagen and elastin in a proper configuration, stimulates the production of collagen and adds hydration, which can help slow down wrinkle formation. Hyaluronic acid is one of the most common active ingredients in skincare creams, gels and lotions.
Moisturisers can hydrate the skin in different ways. “Occlusive” substances produce a thin layer of oil on the skin that prevents water loss due to evaporation. “Humectants” attract and hold water in the skin, and they can differ in their capacity to bind with water, which influences the degree of skin hydration.
Do silk pillowcases actually make a difference?
Can they help? New Africa/Shutterstock Silk pillowcases can make a difference in wrinkle formation, if they let your skin glide and move, rather than adding friction and pressure on a single spot. If you can, use silk sheets and silk pillows.
Studies have also shown pillows designed to reduce mechanical stress during sleep can prevent skin deformations. Such a pillow could be useful in slowing down and preventing the formation of certain facial wrinkles.
Sleeping on your back can reduce the risk of sleep lines, as can a nighttime routine of moisturising before sleep.
Otherwise, lifestyle choices and habits, such quitting smoking, drinking plenty of water, a healthy diet (eating enough vegetables, fruits, nuts, seeds, healthy fats, yogurt and other fermented foods) and regular use of sunscreens can help improve the appearance of the skin on our face.
Yousuf Mohammed, Dermatology researcher, The University of Queensland; Khanh Phan, Postdoctoral Research Fellow, Frazer Institute, The University of Queensland, and Vania Rodrigues Leite E. Silva, Honorary Associate Professor, Frazer Institute, The University of Queensland
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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I’ve been given opioids after surgery to take at home. What do I need to know?
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Opioids are commonly prescribed when you’re discharged from hospital after surgery to help manage pain at home.
These strong painkillers may have unwanted side effects or harms, such as constipation, drowsiness or the risk of dependence.
However, there are steps you can take to minimise those harms and use opioids more safely as you recover from surgery.
Flystock/Shutterstock Which types of opioids are most common?
The most commonly prescribed opioids after surgery in Australia are oxycodone (brand names include Endone, OxyNorm) and tapentadol (Palexia).
In fact, about half of new oxycodone prescriptions in Australia occur after a recent hospital visit.
Most commonly, people will be given immediate-release opioids for their pain. These are quick-acting and are used to manage short-term pain.
Because they work quickly, their dose can be easily adjusted to manage current pain levels. Your doctor will provide instructions on how to adjust the dosage based on your pain levels.
Then there are slow-release opioids, which are specially formulated to slowly release the dose over about half to a full day. These may have “sustained-release”, “controlled-release” or “extended-release” on the box.
Slow-release formulations are primarily used for chronic or long-term pain. The slow-release form means the medicine does not have to be taken as often. However, it takes longer to have an effect compared with immediate-release, so it is not commonly used after surgery.
Controlling your pain after surgery is important. This allows you get up and start moving sooner, and recover faster. Moving around sooner after surgery prevents muscle wasting and harms associated with immobility, such as bed sores and blood clots.
Everyone’s pain levels and needs for pain medicines are different. Pain levels also decrease as your surgical wound heals, so you may need to take less of your medicine as you recover.
But there are also risks
As mentioned above, side effects of opioids include constipation and feeling drowsy or nauseous. The drowsiness can also make you more likely to fall over.
Opioids prescribed to manage pain at home after surgery are usually prescribed for short-term use.
But up to one in ten Australians still take them up to four months after surgery. One study found people didn’t know how to safely stop taking opioids.
Such long-term opioid use may lead to dependence and overdose. It can also reduce the medicine’s effectiveness. That’s because your body becomes used to the opioid and needs more of it to have the same effect.
Dependency and side effects are also more common with slow-release opioids than immediate-release opioids. This is because people are usually on slow-release opioids for longer.
Then there are concerns about “leftover” opioids. One study found 40% of participants were prescribed more than twice the amount they needed.
This results in unused opioids at home, which can be dangerous to the person and their family. Storing leftover opioids at home increases the risk of taking too much, sharing with others inappropriately, and using without doctor supervision.
Don’t stockpile your leftover opioids in your medicine cupboard. Take them to your pharmacy for safe disposal. Archer Photo/Shutterstock How to mimimise the risks
Before using opioids, speak to your doctor or pharmacist about using over-the-counter pain medicines such as paracetamol or anti-inflammatories such as ibuprofen (for example, Nurofen, Brufen) or diclofenac (for example, Voltaren, Fenac).
These can be quite effective at controlling pain and will lessen your need for opioids. They can often be used instead of opioids, but in some cases a combination of both is needed.
Other techniques to manage pain include physiotherapy, exercise, heat packs or ice packs. Speak to your doctor or pharmacist to discuss which techniques would benefit you the most.
However, if you do need opioids, there are some ways to make sure you use them safely and effectively:
- ask for immediate-release rather than slow-release opioids to lower your risk of side effects
- do not drink alcohol or take sleeping tablets while on opioids. This can increase any drowsiness, and lead to reduced alertness and slower breathing
- as you may be at higher risk of falls, remove trip hazards from your home and make sure you can safely get up off the sofa or bed and to the bathroom or kitchen
- before starting opioids, have a plan in place with your doctor or pharmacist about how and when to stop taking them. Opioids after surgery are ideally taken at the lowest possible dose for the shortest length of time.
A heat pack may help with pain relief, so you end up using fewer painkillers. New Africa/Shutterstock If you’re concerned about side effects
If you are concerned about side effects while taking opioids, speak to your pharmacist or doctor. Side effects include:
- constipation – your pharmacist will be able to give you lifestyle advice and recommend laxatives
- drowsiness – do not drive or operate heavy machinery. If you’re trying to stay awake during the day, but keep falling asleep, your dose may be too high and you should contact your doctor
- weakness and slowed breathing – this may be a sign of a more serious side effect such as respiratory depression which requires medical attention. Contact your doctor immediately.
If you’re having trouble stopping opioids
Talk to your doctor or pharmacist if you’re having trouble stopping opioids. They can give you alternatives to manage the pain and provide advice on gradually lowering your dose.
You may experience withdrawal effects, such as agitation, anxiety and insomnia, but your doctor and pharmacist can help you manage these.
How about leftover opioids?
After you have finished using opioids, take any leftovers to your local pharmacy to dispose of them safely, free of charge.
Do not share opioids with others and keep them away from others in the house who do not need them, as opioids can cause unintended harms if not used under the supervision of a medical professional. This could include accidental ingestion by children.
For more information, speak to your pharmacist or doctor. Choosing Wisely Australia also has free online information about managing pain and opioid medicines.
Katelyn Jauregui, PhD Candidate and Clinical Pharmacist, School of Pharmacy, Faculty of Medicine and Health, University of Sydney; Asad Patanwala, Professor, Sydney School of Pharmacy, University of Sydney; Jonathan Penm, Senior lecturer, School of Pharmacy, University of Sydney, and Shania Liu, Postdoctoral Research Fellow, Faculty of Medicine and Dentistry, University of Alberta
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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A Fresh Take On Hypothyroidism
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The Three Rs To Boost Thyroid-Related Energy Levels
This is Dr. Izabella Wentz. She’s a doctor of pharmacology, and after her own diagnosis with Hashimoto’s thyroiditis, she has taken it up as her personal goal to educate others on managing hypothyroidism.
Dr. Wentz is also trained in functional medicine through The Institute for Functional Medicine, Kalish Functional Medicine, and the American Academy of Anti-Aging Medicine. She is a Fellow of the American Society of Consultant Pharmacists, and holds certifications in Medication Therapy Management as well as Advanced Diabetes Care through the American Pharmacists Association. In 2013, she received the Excellence in Innovation Award from the Illinois Pharmacists Association.
Dr. Wentz’s mission
Dr. Wentz was disenchanted by the general medical response to hypothyroidism in three main ways. She tells us:
- Thyroid patients are not diagnosed appropriately.
- For this, she criticises over-reliance on TSH tests that aren’t a reliable marker of thyroid function, especially if you have Hashimoto’s.
- Patients should be better optimized on their medications.
- For this, she criticizes many prescribed drugs that are actually pro-drugs*, that don’t get converted adequately if you have an underactive thyroid.
- Lifestyle interventions are often ignored by mainstream medicine.
- Medicines are great; they truly are. But medicating without adjusting lifestyle can be like painting over the cracks in a crumbling building.
*a “pro-drug” is what it’s called when the drug we take is not the actual drug the body needs, but is a precursor that will get converted to that actual drug we need, inside our body—usually by the liver, but not always. An example in this case is T4, which by definition is a pro-drug and won’t always get correctly converted to the T3 that a thyroid patient needs.
Well that does indeed sound worthy of criticism. But what does she advise instead?
First, she recommends a different diagnostic tool
Instead of (or at least, in addition to) TSH tests, she advises to ask for TPO tests (thyroid peroxidase), and a test for Tg antibodies (thyroglobulin). She says these are elevated for many years before a change in TSH is seen.
Next, identify the root cause and triggers
These can differ from person to person, but in countries that add iodine to salt, that’s often a big factor. And while gluten may or may not be a factor, there’s a strong correlation between celiac disease and Hashimoto’s disease, so it is worth checking too. Same goes for lactose.
By “checking”, here we mean testing eliminating it and seeing whether it makes a difference to energy levels—this can be slow, though, so give it time! It is best to do this under the guidance of a specialist if you can, of course.
Next, get to work on repairing your insides.
Remember we said “this can be slow”? It’s because your insides won’t necessarily bounce back immediately from whatever they’ve been suffering from for what’s likely many years. But, better late than never, and the time will pass anyway, so might as well get going on it.
For this, she recommends a gut-healthy diet with specific dietary interventions for hypothyroidism. Rather than repeat ourselves unduly here, we’ll link to a couple of previous articles of ours, as her recommendations match these:
She also recommends regular blood testing to see if you need supplementary TSH, TPO antibodies, and T3 and T4 hormones—as well as vitamin B12.
Short version
After diagnosis, she recommends the three Rs:
- Remove the causes and triggers of your hypothyroidism, so far as possible
- Repair the damage caused to your body, especially your gut
- Replace the thyroid hormones and related things in which your body has become deficient
Learn more
If you’d like to learn more about this, she offers a resource page, with resources ranging from on-screen information, to books you can get, to links to hook you up with blood tests if you need them, as well as recommended supplements to consider.
She also has a blog, which has an interesting relevant article added weekly.
Enjoy, and take care of yourself!
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- Thyroid patients are not diagnosed appropriately.
MSG vs. Salt: Sodium Comparison
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It’s Q&A Day at 10almonds!
Q: Is MSG healthier than salt in terms of sodium content or is it the same or worse?
Great question, and for that matter, MSG itself is a great topic for another day. But your actual question, we can readily answer here and now:
- Firstly, by “salt” we’re assuming from context that you mean sodium chloride.
- Both salt and MSG do contain sodium. However…
- MSG contains only about a third of the sodium that salt does, gram-for-gram.
- It’s still wise to be mindful of it, though. Same with sodium in other ingredients!
- Baking soda contains about twice as much sodium, gram for gram, as MSG.
Wondering why this happens?
Salt (sodium chloride, NaCl) is equal parts sodium and chlorine, by atom count, but sodium’s atomic mass is lower than chlorine’s, so 100g of salt contains only 39.34g of sodium.
Baking soda (sodium bicarbonate, NaHCO₃) is one part sodium for one part hydrogen, one part carbon, and three parts oxygen. Taking each of their diverse atomic masses into account, we see that 100g of baking soda contains 27.4g sodium.
MSG (monosodium glutamate, C₅H₈NO₄Na) is only one part sodium for 5 parts carbon, 8 parts hydrogen, 1 part nitrogen, and 4 parts oxygen… And all those other atoms put together weigh a lot (comparatively), so 100g of MSG contains only 12.28g sodium.
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