Water: For Health, for Healing, for Life – by Dr. Fereydoon Batmanghelidj
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Notwithstanding the cover’s declaration of “you’re not sick, you’re thirsty”, in fact this book largely makes the argument that both are often the case simultaneously, and that dehydration plays a bigger role in disease pathogenesis and progression than it is credited for.
You may be wondering: is this 304 pages to say “drink some water”?
And the answer is: yes, somewhat. However, it also goes into detail of how and why it is relevant in each case, which means that there will be, once you have read this, more chance of your dehydrated and thus acutely-less-functional brain going “oh, I remember what this is” rather than just soldiering on dehydrated because you are too dehydrated to remember to hydrate.
The strength of the book really is in motivation; understanding why things happen the way they do and thus why they matter, is a huge part of then actually being motivated to do something about it. And let’s face it, a “yes, I will focus on my hydration” health kick is typically sustained for less time than many more noticeable (e.g. diet and exercise) healthy lifestyle adjustments, precisely because there’s less there to focus on so it gets forgotten.
The style is a little dated (the book is from 2003, and the style feels like it is from the 80s, which is when the author was doing most of his research, before launching his first book, which we haven’t read-and-reviewed yet, in 1992) but perfectly clear and pleasant to read.
Bottom line: this book may well get you to actually drink more water
Click here to check out Water: For Health, for Healing, for Life, and get hydrating!
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How Intermittent Fasting Reduces Heart Attack Risk (Directly, Not Via Weight Control!)
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We’ve written before about the benefits of intermittent fasting, such as:
- Intermittent Fasting: What’s The Truth?
- 16/8 Intermittent Fasting For Beginners
- Before You Eat Breakfast: 3 Surprising Facts About Intermittent Fasting
Intermittent fasting is mostly enjoyed for its metabolic benefits, such as How To Prevent And Reverse Type 2 Diabetes.
We also covered a very related topic, with intermittent fasting once again being on the suggestions list:
Improve Your Insulin Sensitivity! ← this is actually more important even that blood sugar control itself, important as that latter is!
So, how does it work to reduce heart attack risk?
While intermittent fasting can be used as a weight loss tool (it also doesn’t have to be—it depends on what you eat and what you’re doing in terms of exercise, amongst other factors), this isn’t about that.
Although it is also worth mentioning that intermittent fasting does reduce the risks associated with diabetes, hypercholesterolemia, cancer, Alzheimer’s, and more, as well as generally improving cardiovascular health by reducing blood pressure, cholesterol, and insulin resistance, amongst other metrics.
However, this is about platelet aggregation. Or in whole: platelet activation, aggregation, and thrombosis.
A team of scientists, Dr. Shimo Dai et al., investigated the effects of alternate-day intermittent fasting on platelets and thrombosis, in two quite different, but both important, demographics:
- Humans with coronary artery disease
- Mice with the ApoE gene (the Alzheimer’s risk gene)
Why the mice? Because they wanted to check the level of cerebral ischemia-reperfusion injury (the damage that occurs after a stroke), and no ethics board will let scientists slice up human participants brains at will.
In both cases, the intermittent fasting group enjoyed protective effects that the control group (ad libitum eating) did not.
Specifically, reduced platelet activation, as well as reduced platelet aggregation. Just to be clear:
- Platelet activation = platelets getting deployed
- Platelet aggregation = platelets sticking together
Both are required for thrombosis, which occurs when the platelets, having been activated and aggregated (which is their job, for example to stop bleeding in the case of an injury), block one or more blood vessels.
A healthy level of platelet activation and aggregation rests in the sweet spot wherefrom it can stop bleeding, without stopping blood circulation.
This was found to be associated with increased levels of indole-3-propionic acid (IPA), which is created by certain gut bacteria (C. sporogenes), who proliferate enthusiastically during intermittent fasting.
In few words:
- intermittent fasting triggers the C. sporogenes to proliferate,
- which increases IPA levels,
- which reduces platelet activation and aggregation,
- which reduces the risk of thrombosis,
- and thus reduces the risk of heart attack.
We may hypothesize that this may be a reason to not do intermittent fasting if you have a bleeding disorder, and consult your doctor if you’re on blood thinners.
For everyone else, this is one more thing that makes intermittent fasting a very healthful practice!
You can find the paper itself here:
And here’s a pop-science article that gets more technical than we have, if you’d like a middle-ground in terms of complexity:
Intermittent fasting cuts heart attack risk by preventing dangerous blood clots
Want to try intermittent fasting, but it sounds hard?
Check out this:
Enjoy!
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One in twenty people has no sense of smell – here’s how they might get it back
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During the pandemic, a lost sense of smell was quickly identified as one of the key symptoms of COVID. Nearly four years later, one in five people in the UK is living with a decreased or distorted sense of smell, and one in twenty have anosmia – the total loss of the ability to perceive any odours at all. Smell training is one of the few treatment options for recovering a lost sense of smell – but can we make it more effective?
Smell training is a therapy that is recommended by experts for recovering a lost sense of smell. It is a simple process that involves sniffing a set of different odours – usually essential oils, or herbs and spices – every day.
The olfactory system has a unique ability to regenerate sensory neurons (nerve cells). So, just like physiotherapy where exercise helps to restore movement and function following an injury, repeated exposure to odours helps to recover the sense of smell following an infection, or other cause of smell loss (for example, traumatic head injury).
Several studies have demonstrated the effectiveness of smell training under laboratory conditions. But recent findings have suggested that the real-world results might be disappointing.
One reason for this is that smell training is a long-term therapy. It can take months before patients detect anything, and some people may not get any benefit at all.
In one study, researchers found that after three months of smell training, participation dropped to 88%, and further declined to 56% after six months. The reason given was that these people did not feel as though they noticed any improvement in their ability to smell.
Cross-modal associations
To remedy this, researchers are now investigating how smell training can be improved. One interesting idea is that information from our other senses, or “cross-modal associations”, can be applied to smell training to promote odour perception and improve the results.
Cross-modal associations are described as the tendency for sensory cues from different sensory systems to be matched. For example, brightness tends to be associated with loudness. Pitch is related to size. Colours are linked to temperature, and softness is matched with round shapes, while spiky shapes feel more rough. In previous studies, these associations have been shown to have a considerable influence on how sensory information is processed. Especially when it comes to olfaction.
Recent research has shown that the sense of smell is influenced by a combination of different sensory inputs – not just odours. Sensory cues such as colour, shape, and pitch are believed to play a role in the ability to correctly identify and name odours, and can influence perceptions of odour pleasantness and intensity.
In one study, participants were asked to complete a test that measured their ability to discriminate between different odours while they were presented with the colour red or yellow, an outline drawing of a strawberry or a lemon, or a combination of these colours and shapes. The results suggested that corresponding odour and colour associations (for example, the colour red and strawberry) were linked to increased olfactory performance compared with odours and colours that were not associated (for example, the colour yellow and strawberry).
People who associated strawberries with the colour red performed better on smell tests. GCapture/Shutterstock While projects focusing on harnessing these cross-modal associations to improve treatments for smell loss are underway, research has already started to deliver some promising results.
In a recent study that aimed to investigate whether the effects of smell training could be improved with the addition of cross-modal associations, participants watched a guidance video containing sounds that matched the odours that they were training with. The results suggest that cross-modal interactions plus smell training improved olfactory function compared to smell training alone.
The results reported in recent studies have been promising and offer new insights into the field of olfactory science. It is hoped that this will soon lead to the development of more effective treatment options for smell recovery.
In the meantime, smell training is one of the best things you can do for a lost sense of smell, so patients are encouraged to stick with it so that they give themselves the best chance at recovery.
Emily Spencer, PhD Candidate, Olfaction, Edinburgh Napier University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Vit D + Calcium: Too Much Of A Good Thing?
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Vit D + Calcium: Too Much Of A Good Thing?
- Myth: you can’t get too much calcium!
- Myth: you must get as much vitamin D as possible!
Let’s tackle calcium first:
❝Calcium is good for you! You need more calcium for your bones! Be careful you don’t get calcium-deficient!❞
Contingently, those comments seem reasonable. Contingently on you not already having the right amount of calcium. Most people know what happens in the case of too little calcium: brittle bones, osteoporosis, and so forth.
But what about too much?
Hypercalcemia
Having too much calcium—or “hypercalcemia”— can lead to problems with…
- Groans: gastrointestinal pain, nausea, and vomiting. Peptic ulcer disease and pancreatitis.
- Bones: bone-related pains. Osteoporosis, osteomalacia, arthritis and pathological fractures.
- Stones: kidney stones causing pain.
- Moans: refers to fatigue and malaise.
- Thrones: polyuria, polydipsia, and constipation
- Psychic overtones: lethargy, confusion, depression, and memory loss.
(mnemonic courtesy of Sadiq et al, 2022)
What causes this, and how do we avoid it? Is it just dietary?
It’s mostly not dietary!
Overconsumption of calcium is certainly possible, but not common unless one has an extreme diet and/or over-supplementation. However…
Too much vitamin D
Again with “too much of a good thing”! While keeping good levels of vitamin D is, obviously, good, overdoing it (including commonly prescribed super-therapeutic doses of vitamin D) can lead to hypercalcemia.
This happens because vitamin D triggers calcium absorption into the gut, and acts as gatekeeper to the bloodstream.
Normally, the body only absorbs 10–20% of the calcium we consume, and that’s all well and good. But with overly high vitamin D levels, the other 80–90% can be waved on through, and that is very much Not Good™.
See for yourself:
- Hypercalcemia of Malignancy: An Update on Pathogenesis and Management
- Vitamin D-Mediated Hypercalcemia: Mechanisms, Diagnosis, and Treatment
How much is too much?
The United States’ Office of Dietary Supplements defines 4000 IU (100μg) as a high daily dose of vitamin D, and recommends 600 IU (15μg) as a daily dose, or 800 IU (20μg) if aged over 70.
See for yourself: Vitamin D Fact Sheet for Health Professionals ← there’s quite a bit of extra info there too
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Does This New Machine Cure Depression?
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Let us first talk briefly about the slightly older tech that this may replace, transcranial magnetic stimulation (TMS).
TMS involves electromagnetic fields to stimulate the left half of the brain and inhibit the right half of the brain. It sounds like something from the late 19th century—“cure your melancholy with the mystical power of magnetism”—but the thing is, it works:
The main barriers to its use are that the machine itself is expensive, and it has to be done in a clinic by a trained clinician. Which, if it were treating one’s heart, say, would not be so much of an issue, but when treating depression, there is a problem that depressed people are not the most likely to commit to (and follow through with) going somewhere probably out-of-town regularly to get a treatment, when merely getting out of the door was already a challenge and motivation is thin on the ground to start with.
Thus, antidepressant medications are more often the go-to for cost-effectiveness and adherence. Of course, some will work better than others for different people, and some may not work at all in the case of what is generally called “treatment-resistant depression”:
Antidepressants: Personalization Is Key!
Transcranial stimulation… At home?
Move over transcranial magnetic stimulation; it’s time for transcranial direct-current stimulation (tDCS).
First, what it’s not: electroconvulsive therapy (ECT). Rather, it uses a very low current.
What it is: a small and portable headset (as opposed to the big machine to go sit in for TMS) that one can use at home. Here’s an example product on Amazon, though there are more stylish versions around, this is the same basic technology.
In a recent study, 45% of those who received treatment with this device experienced remission in 10 weeks, significantly beating placebo (bearing in mind that placebo effect is strongest when it comes to invisible ailments such as depression).
See also: How To Leverage Placebo Effect For Yourself ← this explains more about how the placebo effect works, to the extent that it can even be an adjuvant tool to augment “real” therapies
And as for the study, here it is:
…which rather cuts through the “depressed people don’t make it to the clinic consistently, if at all” problem. Of course, it still requires adherence to its use at home, for example three 30-minute sessions per week, but honestly, “lie/sit still” is likely within the abilities of the majority of depressed people. However…
Important note: you remember we said “in 10 weeks”? That may be critical, because shorter studies (e.g. 6 weeks) have previously returned without such glowing results:
Home-Use Transcranial Direct Current Stimulation for the Treatment of a Major Depressive Episode
This means that if you get this tech for yourself or a loved one, it’ll be necessary to persist for likely 10 weeks, certainly more than 6 weeks, and not abandon it after a few sessions when it hasn’t been life-changing yet. And that may be more of a challenge for a depressed person, so likely an “accountability buddy” of some kind is in order (partner, close friend, etc) to help ensure adherence and generally bug you/them into doing it consistently.
And then, of course, you/they might still be in the 55% of people for whom it didn’t work. And that does suck, but random antidepressant medications (i.e., not personalized) don’t fare much better, statistically.
Want something else against depression meanwhile?
Here are some strategies that not only can significantly help, but also are tailored to be actually doable while depressed:
The Mental Health First-Aid You’ll Hopefully Never Need ← written by your writer who has previously suffered extensively from depression and knows what it is like
Take care!
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Flossing Without Flossing?
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Flossing Without Flossing?
You almost certainly brush your teeth. You might use mouthwash. A lot of people floss for three weeks at a time, often in January.
There are a lot of options for oral hygiene; variations of the above, and many alternatives too. This is a big topic, so rather than try to squeeze it all in one, this will be a several-part series.
The first part was: Toothpastes & Mouthwashes: Which Help And Which Harm?
How important is flossing?
Interdental cleaning is indeed pretty important, even though it may not have the heart health benefits that have been widely advertised:
However! The health of our gums is very important in and of itself, especially as we get older:
Flossing Is Associated with Improved Oral Health in Older Adults
But! It helps to avoid periodontal (e.g. gum) disease, not dental caries:
Flossing for the management of periodontal diseases and dental caries in adults
And! Most certainly it can help avoid a stack of other diseases:
Interdental Cleaning Is Associated with Decreased Oral Disease Prevalence
…so in short, if you’d like to have happy healthy teeth and gums, flossing is an important adjunct, and/but not a one-stop panacea.
Is it better to floss before or after brushing?
As you prefer. A team of scientists led by Dr. Claudia Silva studied this, and found that there was “no statistical difference between brush-floss and floss-brush”:
Flossing is tedious. How do we floss without flossing?
This is (mostly) about water-flossing! Which does for old-style floss what sonic toothbrushes to for old-style manual toothbrushes.
If you’re unfamiliar, it means using a device that basically power-washes your teeth, but with a very narrow high-pressure jet of water.
Do they work? Yes:
As for how it stacks up against traditional flossing, Liang et al. found:
❝In our previous single-outcome analysis, we concluded that interdental brushes and water jet devices rank highest for reducing gingival inflammation while toothpick and flossing rank last.
In this multioutcome Bayesian network meta-analysis with equal weight on gingival inflammation and bleeding-on-probing, the surface under the cumulative ranking curve was 0.87 for water jet devices and 0.85 for interdental brushes.
Water jet devices and interdental brushes remained the two best devices across different sets of weightings for the gingival inflammation and bleeding-on-probing. ❞
~ Journal of Evidence-Based Dental Practice
You may be wondering how safe it is if you have had dental work done, and, it appears to be quite safe, for example:
BDJ | Water-jet flossing: effect on composites
Want to try water-flossing?
Here are some examples on Amazon:
- Waterpik Complete Care 9.0 ← example of a top-end water-flossing device
- Philips Sonicare Power Flosser 3000 ← top-tier not-Waterpik-brand device
- INSMART Cordless Water Dental Flosser ← very low price and still average 4.5 star reviews, so in our opinion, a fine first choice
Bonus: if you haven’t tried interdental brushes, here’s an example for that
Enjoy!
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Dates vs Banana – Which is Healthier?
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Our Verdict
When comparing dates to banana, we picked the dates.
Why?
It was close, and bananas do have some strengths too! We pitted these two against each other as they’re both sweet fruits often used as a sweetening and consistency-altering ingredient in desserts and sweet snacks, so if you’re making a choice between them, here are the things to consider:
In terms of macros, dates have more than 3x the fiber, more than 2x the protein, and a little over 3x the carbs. You may be wondering how this adds up in terms of glycemic index: dates have the lower GI. So, we pick dates, here, for that reason and overall nutritional density too.
When it comes to vitamins, bananas have their moment, albeit barely: dates have more of vitamins B1, B3, B5, and K, while bananas have more of vitamins A, B6, C, E, and choline, making for a marginal victory for bananas in this category.
Looking at minerals next, however, it’s quite a different story: dates have more calcium, copper, iron, magnesium, phosphorus, potassium, selenium, and zinc, while bananas are not higher in any mineral. No, not even potassium, for which they are famous—dates have nearly 2x more potassium than bananas.
Adding up these sections makes for a clear win for dates in general!
Enjoy either/both, but dates are the more nutritious snack/ingredient.
Want to learn more?
You might like to read:
From Apples to Bees, and High-Fructose Cs: Which Sugars Are Healthier, And Which Are Just The Same?
Take care!
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