Why You Don’t Need 8 Glasses Of Water Per Day
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The idea that you need to drink eight glasses of water daily is a myth. For most people most of the time, this practice will not make your skin brighter, improve mental clarity, or boost energy levels. All that will happen as a result of drinking beyond your thirst, is that you’ll pee more.
A self-regulating system
Our kidneys regulate hydration by monitoring blood volume and salt levels. When blood becomes slightly saltier or its volume drops, such as through sweating, the kidneys absorb more water into the bloodstream. If needed, the body triggers thirst signals to encourage fluid intake.
In most cases, you can rely on your body’s natural thirst cues to manage hydration. Thirst is a reliable indicator of when you need to drink water, making constant monitoring of water intake unnecessary for most people.
There are some exceptions, though! Some people, such as those with kidney stones, especially older adults, or those with specific medical considerations and resultant advice from your doctor, may need to pay closer attention to their water intake.
Nor does hydration have to be a matter of “drinking water”: many foods and drinks, such as fruit, coffee, soups, etc, contribute to your daily water intake and (because the body processes it more slowly) are often more hydrating than plain water (which can just pass straight through if you take more than a certain amount at once). If you listen to your body’s thirst signals, there’s no need to rigidly count eight glasses of water each day.
For more on all of this, enjoy:
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Want to learn more?
You might also like to read:
Hydration Mythbusting ← this also covers why urine color is not as good a guide as your thirst
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Four Habits That Drastically Improve Mobility
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Mobility is critical for health living, but stretching isn’t the entire story:
Beyond just stretching
Liv Townsend, of LivInLeggings fames, recommends these four habits:
- Sit less: prolonged sitting affects hip and shoulder mobility. Specifically, it affects it negatively. It is also a bringer of woe in many other ways beyond the scope of what we’re doing here today, but the important thing for mobility is to sit less. So, if you spent a lot of time at a desk, invest in a standing desk (writer’s note: I dearly love mine, which is technically a sit-stand converter like this one on Amazon but I just keep it in the up position all the time, so it’s easy to forget it has multiple settings. Anyway, it’s sooooooo much better for my back than sitting for hours at a time.). For how to deal with other (i.e. not desk-related) reasons you might be sitting a lot, check out: Stand Up For Your Health (Or Don’t*)
- Take creatine: more than just for strength and muscle-building (and even aside from its brain-benefits that it bestows to older people, but not young ones), creatine also supports mobility and flexibility. Any brand is fine, so long as creatine monohydrate is the sole ingredient. Also, micronized or not is also fine—that’s just to do with whether it’s been pre-compacted into super-tiny beads (so small that it will still effectively be a powder), which helps it to avoid clumping when mixed in a liquid, that’s all. It shouldn’t have any additives either way (so, check labels to ensure it doesn’t).
- Spend more time under tension: no, we’re not talking about texting your spouse “we need to talk”, but rather, this means that when we do stretch, we should spend longer in the stretched position. While dynamic stretching has its place, passive stretching (holding stretches for longer periods) is essential and shouldn’t be overlooked.
- Incorporate “movement snacks”: this is about when we are going about our daily life, we should move more while doing everyday tasks. Get in some shoulder stretches while waiting for the kettle to boil, deep squat while petting the dog, etc. These are very important, because mobility is very much a “use it or lose it” thing, and so moving in many different ways, frequently, is the only way to ensure full coverage (no stretching regimen is going to be able to cover the many compound movements that we do in everyday life).
*That article also covers how to avoid the damage of sitting even if you cannot physically stand!
For more on all of these, enjoy:
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Want to learn more?
You might also like to read:
Mobility As Though A Sporting Pursuit: Train For The Event Of Your Life!
Take care!
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Plant vs Animal Protein
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Plant vs Animal Protein: Head to Head
Some people will obviously have strong ideological opinions here—for vegetarians and vegans, it’s no question, and for meat-eaters, it’s easy to be reactive to that and double-down on the bacon. But, we’re a health science newsletter, so we’ll be sticking to the science.
Which is better, healthwise?
First, it depends on how you go about it. Consider these options:
- A piece of salmon
- A steak
- A hot dog
- A hot dog, but plant-based
- Textured soy protein (no additives)
- Edamame (young soy) beans
Three animal-based protein sources, three plant-based. We could render the competition simple (but very unfair) by pitting the hotdog against the edamame beans, or the plant-based hot dog against the piece of salmon. So let’s kick this off by saying:
- There are good and bad animal-based protein sources
- There are good and bad plant-based protein sources
Whatever you choose, keep that in mind while you do. Less processed is better in either case. And if you do go for red meat, less is better, period.
Picking the healthiest from each, how do the nutritional profiles look?
They look good in both cases! One factor of importance is that in either case, our bodies will reduce the proteins we consume to their constituent amino acids, and then rebuild them into the specific proteins we actually need. Our bodies will do that regardless of the source, because we are neither a salmon nor a soybean, for example.
We need 20 specific amino acids, for our bodies to make the proteins we will use in our bodies. Of these, 9 are considered “essential”, meaning we cannot synthesize them and must get them from our diet,
Animal protein sources contain all 9 of those (just like we do). Plant based sources often don’t, individually, but by eating soy for example (which does contain them all) and/or getting multiple sources of protein from different plants, the 9 can be covered quite easily with little thought, just by having a varied diet.
Meats are #1!
- They’re number 1 for nutritional density
- They’re number 1 for health risks, too
So while plant-based diet adherents may need to consume more varied things to get all the nutrients necessary, meat-eaters won’t have that problem.
Meat-eaters will instead have a different problem, of more diet-related health risks, e.g.
- Cardiovascular disease
- Metabolic disorders
- Cancers
So again, if eating (especially processed and/or red) meat, moderation is good. The Mediterranean Diet that we so often recommend, by default contains small amounts of lean animal protein.
Which is better for building muscle?
Assuming a broadly healthy balanced diet, and getting sufficient protein from your chosen source, they’re pretty equal:
- Vegan and Omnivorous High Protein Diets Support Comparable Daily Myofibrillar Protein Synthesis Rates and Skeletal Muscle Hypertrophy in Young Adults
- A mycoprotein-based high-protein vegan diet supports equivalent daily myofibrillar protein synthesis rates compared with an isonitrogenous omnivorous diet in older adults: a randomised controlled trial
(both studies showed that both dietary approaches yielded results that showed no difference in muscle synthesis between the two)
The bottom line is…
Healthwise, what’s more important than whether you get your protein from animals or plants is that you eat foods that aren’t processed, and are varied.
And if you want to do a suped-up Mediterranean Diet with less red meat, you might want to try:
A Pesco-Mediterranean Diet With Intermittent Fasting: JACC Review Topic of the Week
^This is from a review in the Journal of the American College of Cardiology, and in few words, they recommend it very highly
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Health Shots − by Toby Amidor
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First a quick note on qualifications: while not a doctor, she’s a RD, CDN, FAND, and as such, this is a very nutrition-focused book.
As a general rule of thumb, juices are unhealthy because of being largely liquid sugar and no fiber, but in this case:
- even the juice-based tonics are very small portions, so even if some have a high glycemic index, they’ll still have a low glycemic load, which means that having one is unlikely to spike blood glucose and thus insulin
- many of the tonics have fiber in any case, due to how they are made.
The tonics are divided into sections per what one wants to focus on, e.g. anti-inflammatory, brain health, sleep, gut health, skin/nails/hair, etc.
That said, some of the recipes are a little optimistic about how much effect the dosage present will have. For example, we calculate an an average of 0.03mg of resveratrol in her grape-based shot boasting resveratrol benefits. For contrast, resveratrol supplements range from 500mg to 200mg. So, to get the equivalent of the least generous supplement, you’d need to drink 16,667 shots.
Bottom line: some of the the health claims in this book are overstated, but by and large, it’s hard to go wrong consuming more plants, and these “health shots” are not a bad way to get a good dose of phytonutrients without hitting glycemic problems.
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Water’s Counterintuitive Properties
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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
❝Why are we told to drink more water for everything, even if sometimes it seems like the last thing we need? Bloated? Drink water. Diarrhea? Drink water. Nose running like a tap? Drink water❞
While water will not fix every ill, it can fix a lot, or at least stop it from being worse!
Our bodies are famously over 60% water (exact figure will depend on how well-hydrated you are, obviously, as well as your body composition in terms of muscle and fat). Our cells (which are mostly full of mostly water) need replacing all the time, and almost everything that needs transporting almost anywhere is taken there by blood (which is also mostly water). And if we need something moving out of the body? Water is usually going to be a large part of how it gets ejected.
In the cases of the examples you gave…
- Bloating: bloating is often a matter of water retention, which often happens as a result of having too much salt, and/or sometimes too much fat. So the body’s homeostatic system (the system that tries to maintain all kinds of equilibrium, keeping salt balance, temperature, pH, and many other things in their respective “Goldilocks zones”) tries to add more water to where it’s needed to balance out the salt etc.
- Consequently, drinking more water means the body will note “ok, balance restored, no need to keep retaining water there, excess salts being safely removed using all this lovely water”.
- Diarrhea: this is usually a case of a bacterial infection, though there can be other causes. Whether for that reason or another, the body has decided that it needs to give your gut an absolute wash-out, and it can only do that from the inside—so it uses as much of the body’s water as it needs to do that.
- Consequently, drinking more water means that you are replenishing the water that the body has already 100% committed to using. If you don’t drink water, you’ll still have diarrhea, you’ll just start to get dangerously dehydrated.
- Runny nose: this is usually a case of either fighting a genuine infection, or else fighting something mistaken for a pathogen (e.g. pollen, or some other allergen). The mucus is an important part of the body’s defense: it traps the microbes (be they bacteria, virus, whatever) and water-slides them out of the body.
- Consequently, drinking more water means the body can keep the water-slide going. Otherwise, you’ll just get gradually more dehydrated (because as with diarrhea, your body will prioritize this function over maintaining water reserves—water reserves are there to be used if necessary, is the body’s philosophy) and if the well runs dry, you’ll just be dehydrated and have a higher pathogen-count still in your body.
Some previous 10almonds articles that might interest you:
- Hydration Mythbusting
- When To Take Electrolytes (And When We Shouldn’t!)
- Keeping Your Kidneys Healthy (Especially After 60)
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- Bloating: bloating is often a matter of water retention, which often happens as a result of having too much salt, and/or sometimes too much fat. So the body’s homeostatic system (the system that tries to maintain all kinds of equilibrium, keeping salt balance, temperature, pH, and many other things in their respective “Goldilocks zones”) tries to add more water to where it’s needed to balance out the salt etc.
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Doctors From 15 Specialties Tell The Worst Common Mistakes People Make
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Whatever your professional background, you probably know many things about it that are very obvious to you, but that most people don’t know. So it is for doctors too; here are the things that doctors from 15 specialties would never do, and thus advise people against doing:
Better safe than sorry
We’ll leap straight into it:
- General Surgery: avoid rushing into musculoskeletal or spinal surgery unless absolutely necessary; conservative treatments like physical therapy are often effective.
- Interventional Gastroenterology: avoid long-term, around-the-clock use of anti-inflammatory pain medications (e.g. Ibuprofen and friends) to prevent stomach ulcers.
- Podiatry: never place feet on the car dashboard due to the risk of severe injuries from airbag deployment.
- Rheumatology: avoid daily use of high heels to prevent joint and foot deformities, bunions, and pain.
- Otorhinolaryngology: never smoke, as it can lead to severe consequences like laryngectomy and other life-altering conditions.
- Pediatrics: avoid dangerous activities for children, such as swimming alone, eating choking hazards, biking or skiing without a helmet, or consuming raw meat/fish/dairy. Also, be cautious with firearms in homes.
- Orthopedic Surgery: avoid riding motorcycles and handling fireworks due to high risks of accidents.
- Emergency Medicine: never drink and drive or ride ATVs. Always use eye protection during activities like woodworking.
- Ophthalmology: always wear safety glasses during activities like grinding metal or woodworking. Sunglasses are essential to prevent UV damage even on cloudy days.
- Urology: avoid shaving pubic hair if diabetic or immunocompromised to prevent severe infections like Fournier’s gangrene.
- Gastroenterology: do not use gut health supplements as they lack proven efficacy and are often a waste of money*
- Plastic Surgery: avoid contour threads (barbed sutures for facial rejuvenation) and butt implants due to risks like infection, complications, and poor outcomes.
- Psychiatry: never take recreational drugs from unknown sources to avoid accidental overdoses, especially from substances laced with fentanyl. Carry Narcan for emergencies.
- Dermatology: use sunscreen daily to prevent skin cancer, aging, pigmentation issues, and texture problems caused by UV exposure.
- Cardiology: avoid the carnivore diet as it increases heart disease risks due to its negligible fiber content and high saturated fat intake.
*We had an article about this a while back; part of the problem is that taking probiotics without prebiotics can mean your new bacteria just die in about 20 minutes, which is their approximate lifespan in which to multiply or else die out. Similar problems arise if taking them with sugar that feeds their competitors instead. See: Stop Sabotaging Your Gut!
For more on each of these, in the words of the respective doctors, enjoy:
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You might also like to read:
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Prevention Is Better Than Cure
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Preventative healthcare is the theme this week:
New year, new risks
The start of a new year is a great time to update adult vaccinations, including the flu shot, any COVID-19 boosters, and vaccines for pneumonia, shingles, and tetanus—when was your last booster, after all? Vaccination recommendations vary by age and health conditions, so do check what’s appropriate in your case. Key vaccines include the pneumonia vaccine for those 65 and older, the shingles vaccine for adults over 50, and the Tdap vaccine every 10 years to protect against tetanus, diphtheria, and pertussis (whooping cough), especially for new parents and grandparents, to protect infants:
Read in full: Why it’s important to update adult vaccinations for a new year
Related: The Truth About Vaccines
The heart-healthiest swap you can do
Based on a large (n=202,863, of which 160,123 women and 42,740 men) dataset, a higher plant-to-animal protein ratio is associated with significantly lower risks of cardiovascular disease (CVD) and coronary artery disease (CAD), with diets lower in meat (especially if lower in red meat) and instead rich in plant-based proteins like legumes, nuts, and whole grains reducing CVD risk by 19% and coronary artery disease risk by 27%. Which is quite considerable.
Substituting even small amounts of animal protein (especially if it’s red meat) with plant protein further enhances heart health:
Read in full: Higher plant-to-animal protein ratio linked to lower risk for CVD, CAD among U.S. adults
Related: Plant vs Animal Protein: Head to Head
Let’s keep pan-resistant superbugs at bay
Researchers want to warn us about the threat of pan-resistant bacteria, which could render all known antibiotics ineffective, leading to a sharp rise in global infection-related deaths.
To be clear, we don’t have anything pan-resistant yet, but antibiotic-resistant superbugs are getting close, and in the long term, are likely to win the evolutionary arms race if we don’t change things to diverge considerably from our current path. Modeling a hypothetical pan-resistant E. coli strain, researchers predicted U.S. sepsis deaths could increase 18- to 46-fold within five years of its emergence.
The study calls for urgent action, including stricter antibiotic stewardship, new drug development, and monitoring technologies, emphasizing that without intervention, the global impact could be catastrophic:
Read in full: A public health emergency is waiting at the bottom of the antibiotic resistance cliff
Related: Stop Sabotaging Your Immune System ← see also (linked therein), 4 ways antibiotics can kill you
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