The Good Life – by Robert Waldinger, MD, and Marc Schulz, PhD
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For any who have thought “there must be some middle-ground between entirely subjective self-help books advising how to feel better, and sifting through clinical data on what actually affects people’s moods“, this book is exactly that middle-ground!
Drs. Waldinger and Schultz went through the 80-year-long Harvard Study of Adult Development with a fine-toothed comb, and this book details—more readably—what they found.
There are frequent references to data from the study. Not just numbers, though, people’s answers to questions, too. And how different factors about people’s lives affected their answers to the same questions.
We hear from all ages, from young adults to octagenarians, and learn how attitudes (including: of the same people) change over time. Not because people are fickle, but because people grow… or become disillusioned. Or sometimes, both.
We learn about the importance of money… And where that importance ends.
We learn importance of relationships of various kinds, and this is certainly a recurring theme throughout the study—and thus, throughout the book.
The book doesn’t just present data, though, it also presents actionable insights along the way.
Bottom line: the combined wisdom and life-experiences of a lot of people provide a very “big picture” view of life, and what makes us happy, really. We highly recommend it!
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Dealing with Thirst!
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Busting The Myth of “Eight Glasses Of Water A Day”
Everyone knows we must drink 8 glasses of water a day, or else we’re going to get a failing grade at being a healthy human—like not flossing, or not using adequate sunscreen.
But… Do we? And does tea count? How about (we dare but whisper it) coffee? And soda drinks are mostly water, right? But aren’t some drinks dehydrating? Are special electrolyte drinks really better? There are so many things to consider, so many differing advices, and it’s easy to give up, or just choose what to believe in as a leap of faith.
A quick brain-teaser for you first, though:
If coffee and soda don’t count because they’re dehydrating, then what if you were to take:
– A concentrated tiny cup of espresso, and then a glass of water, would the glass of water count?
– Or (we don’t relish the thought) what if you took a spoonful of soda syrup, and then a glass of water, would the glass of water count?
If your answer was “yes, it’s a glass of water”, then why would it not count if it were taken all at once (e.g. as an Americano coffee, or a regular soda)?
If your answer was “yes, but that water might only offset the dehydration caused by the coffee/syrup, so I might only be breaking even”, then you were thinking about this the right way:
How much water you need depends on many factors that can be affected by what else you are consuming and what else you are doing. Science loves averages, so eight glasses a day may be great if you are of average health, and average body size, in a temperate climate, doing moderate exercise, and so on and so on.
If you’re not the most average person of all time? You may need to take into account a lot of factors, ranging from what you ate for dinner to how much you perspired during your morning exercises. As you (probably) don’t live in laboratory conditions, this can become an impossible task—and if you missed (or guessed incorrectly) even one factor, the whole calculation will be thrown off. But is there any other way to know?
What of the infamous pee test? Drink enough to make your urine as clear as possible, and if it’s dark, you’re dehydrated, common wisdom says.
In reality, however, that tells you not what’s in your body, but rather, what got ejected from your body. If your urine is dark, it might mean you had too little water, but it also could just mean you had the right amount of water but too much sodium, for instance. A study of this was done on athletes, and found no correlation between urine color and actual bodily hydration when measured directly via a blood test.
So, if we can’t just have an app tell us “drink this many glasses of water”, and we can’t trust urine color, what can we do?
What we can do is trust that our body comes with (for free!) a wonderful homeostatic system and it will try to correct any imbalances. If you are thirsty, you’re dehydrated. Drink something with plenty of water in, if not plain water.
But what about special electrolyte drinks? If you need salts, you will crave them. Craving a salty snack? Go for it! Or if you prefer not to snack, do a salt lick test (just put a little salt on your finger, and taste it; if it tastes good, wait a minute or two, and then have a little more, and repeat until it doesn’t).
Bonus Tip:
- Make sure you always have a source of hydration (that you enjoy!) to hand. Maybe it’s chilled water, maybe it’s a pot of tea, maybe it’s a sports drink, it doesn’t matter too much. Even coffee is actually fine, by the way (but don’t overdo it).
- Make a personal rule: “I will always make time for hydration”. That means, if you’re thirsty, have something with water in it now. Not when you’ve finished what you’re doing (unless you really can’t stop, because you are a racecar driver mid-race, or a surgeon mid-operation, or something), but now. Do not postpone it until after you’ve done some other thing first; you will forget and it will keep getting postponed. Always make time for water.
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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:
Click Here If The Embedded Video Doesn’t Load Automatically!
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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Dopamine Nation – by Dr. Anna Lembke
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We live in an age of abundance, though it often doesn’t feel like it. Some of that is due to artificial scarcity, but a lot of it is due to effectively whiting out our dopamine circuitry through chronic overuse.
Psychiatrist Dr. Anna Lembke explores the neurophysiology of pleasure and pain, and how each can (and does) lead to the other. Is the answer to lead a life of extreme neutrality? Not quite.
Rather, simply by being more mindful of how we seek each (yes, both pleasure and pain), we can leverage our neurophysiology to live a better, healthier life—and break/avoid compulsive habits, while we’re at it.
That said, the book itself is quite compelling reading, but as Dr. Lembke shows us, that certainly doesn’t have to be a bad thing.
Bottom line: if you sometimes find yourself restlessly cycling through the same few apps (or TV channels) looking for dopamine that you’re not going to find there, this is the book for you.
Click here to check out Dopamine Nation, and get a handle on yours!
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PS, We Love You
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PS, we love you. With good reason!
There are nearly 20,000 studies on PS listed on PubMed alone, and its established benefits include:
- significantly improving memory
- potential reversal (!) of neurodegeneration
- reduction of stress activation
- improvement in exercise capacity
- it even helps avoid rejection of medical implants
We’ll explore some of these studies and give an overview of how PS does what it does. Just like the (otherwise unrelated) l-theanine we talked about a couple of weeks ago, it does do a lot of things.
PS = Cow Brain?!
Let’s first address a concern. You may have heard something along the lines of “hey, isn’t PS made from cow brain, and isn’t that Very Bad™ for humans, mad cow disease and all?”. The short answer is:
Firstly: ingesting cow brain tissue is indeed generally considered Very Bad™ for humans, on account of the potential for transmission of Bovine Spongiform Encephalopathy (BSE) resulting in its human equivalent, Creutzfeldt–Jakob Disease (CJD), whose unpleasantries are beyond the scope of this newsletter.
Secondly (and more pleasantly): whilst PS can be derived from bovine brain tissue, most PS supplements these days derive from soy—or sometimes sunflower lecithin. Check labels if unsure.
Using PS to Improve Other Treatments
In the human body, the question of tolerance brings us a paradox (not the tolerance paradox, important as that may also be): we must build and maintain a strong immune system capable of quickly adapting to new things, and then when we need medicines (or even supplements), we need our body to not build tolerance of them, for them to continue having an effect.
So, we’re going to look at a very hot-off-the-press study (Feb 2023), that found PS to “mediate oral tolerance”, which means that it helps things (medications, supplements etc.) that we take orally and want to keep working, keep working.
In the scientists’ own words (we love scientists’ own words because they haven’t been distorted by the popular press)…
❝This immunotherapy has been shown to prevent/reduce immune response against life-saving protein-based therapies, food allergens, autoantigens, and the antigenic viral capsid peptide commonly used in gene therapy, suggesting a broad spectrum of potential clinical applications. Given the good safety profile of PS together with the ease of administration, oral tolerance achieved with PS-based nanoparticles has a very promising therapeutic impact.❞
Nguyen et al, Feb 2023
In other words, to parse those two very long sentences into two shorter bullet points:
- It allows a lot of important treatments to continue working—treatments that the body would otherwise counteract
- It is very safe—and won’t harm the normal function of your immune system at large
This is also very consistent with one of the benefits we mentioned up top—PS helps avoid rejection of implants, something that can be a huge difference to health-related quality of life (HRQoL), never mind sometimes life itself!
What is PS Anyways, and How Does It Work?
Phosphatidylserine is a phospholipid, a kind of lipid, found in cell membranes. More importantly:
It’s a signalling agent, mainly for apoptosis, which in lay terms means: it tells cells when it’s time to die.
Cellular death sounds like a bad thing, but prompt and efficient cellular apoptosis (death) and resultant prompt and efficient autophagy (recycling) reduce the risk of your body making mistakes when creating new cells from old cells.
Think about photocopying:
- Situation A: You have a document, and you want to copy it. If you copy it before it gets messed up, your copy will look almost, if not exactly, like the original. It’ll be super easy to read.
- Situation B: You have a document, and you want to copy it, but you delay doing so for so long that the original is all scuffed and creased and has a coffee stain on it. These unwanted changes will get copied onto the new document, and any copy made of that copy will keep the problems too. It gets worse and worse each time.
So, using this over-simplifier analogy, the speed of ‘copying’ is a major factor in cellular aging. The sooner cells are copied, before something gets damaged, the better the copy will be.
So you really, really want to have enough PS (our bodies make it too, by the way) to signal promptly to a cell when its time is up.
You do not want cells soldiering on until they’re the biological equivalent of that crumpled up, coffee-stained sheet of paper.
Little wonder, then, that PS’ most commonly-sought benefit when it comes to supplementation is to help avoid age-related neurodegeneration (most notably, memory loss)!
Keeping the cells young means keeping the brain young!
PS’s role as a signalling agent doesn’t end there—it also has a lot to say to a wide variety of the body’s immunological cells, helping them know what needs to happen to what. Some things should be immediately eaten and recycled; other things need more extreme measures applied to them first, and yet other things need to be ignored, and so forth.
You can read more about that in Elsevier’s publication if you’re curious 🙂
Wow, what a ride today’s newsletter has been! We started at paracetamoxyfrusebendroneomycin, and got down to the nitty gritty with a bunch of hopefully digestible science!
We love feedback, so please let us know if we’re striking the balance right, and/or if you’d like to see more or less of something—there’s a feedback widget at the bottom of this email!
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Blue Cheese vs Brunost – Which is Healthier?
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Our Verdict
When comparing blue cheese to brunost, we picked the brunost.
Why?
First, for the unfamiliar, as brunost isn’t necessarily as popular as blue cheese in N. America where most of our readers are:
Brunost, literally “brown cheese” is a traditional Norwegian affair made from aggressively boiling milk, cream, and whey in an iron cauldron. Whereas the blue in blue cheese comes from mold, the brown in brown cheese comes from caramelizing the milk sugars in the cauldron. When we say “cauldron”, yes, there is nowadays mass-produced brunost that is no longer made in something that could be mistaken for a witch’s brew, but the use of cast iron is actually important to the process, and has been the subject of regulatory controversy in Norway; first the cast iron was abandoned, then because that changed the cheese they fortified the product with added iron supplementation, then that was banned, then they reversed it because it affected iron levels in the general population. Nowadays, it is usually made with iron, one way or another.
Ok, so let’s see how they stack up against each other:
In terms of macronutrients, the two cheeses are comparable in fat, but brunost has more carbs—because whereas bacteria (and to a lesser extent, the mold) ate nearly all the carbs in the blue cheese, the caramelization of the milk sugars in brunost meant the result stayed higher in carbs. Both are considered “low GI” foods, but this category is still at least a moderate win for blue cheese.
When it comes to vitamins, brunost is higher in vitamins A, B1, B2, B3, B5, B6, and B12, while blue cheese is higher in vitamin B9. In other words, a clear and easy win for brunost.
In the category of minerals, brunost has more copper, iron, magnesium, manganese, phosphorus, and potassium. Meanwhile, blue cheese contains more zinc, although we can also mention that blue cheese has about 2x the sodium, which is generally not considered a benefit. The two cheeses are about equal in calcium and selenium. Adding these up makes for another clear and easy win for brunost.
In short, unless you are strongly avoiding [even low-GI foods’] carbs for some reason, brunost wins the day by virtue of its overwhelmingly better vitamin and mineral content.
Still, like most fermented dairy products, both cheeses can be enjoyed in moderation as part of a healthy diet (assuming you don’t have an allergy/intolerance).
Want to learn more?
You might like to read:
Take care!
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The Sweet Truth About Glycine
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Make Your Collagen Work Better
This is Dr. James Nicolantonio. He’s a doctor of pharmacy, and a research scientist. He has a passion for evidence-based nutrition, and has written numerous books on the subject.
Controversy! Dr. DiNicolatonio’s work has included cardiovascular research, in which field he has made the case for increasing (rather than decreasing) the recommended amount of salt in our diet. This, of course, goes very much against the popular status quo.
We haven’t reviewed that research so we won’t comment on it here, but we thought it worth a mention as a point of interest. We’ll investigate his claims in that regard another time, though!
Today, however, we’ll be looking at his incisive, yet not controversial, work pertaining to collagen and glycine.
A quick recap on collagen
We’ve written about collagen before, and its importance for maintaining… Well, pretty much most of our body, really, buta deficiency in collagen can particularly weaken bones and joints.
On a more surface level, collagen’s also important for healthy elastic skin, and many people take it for that reason alone,
Since collagen is found only in animals, even collagen supplements are animal-based (often marine collagen or bovine collagen). However, if we don’t want to consume those, we can (like most animals) synthesize it ourselves from the relevant amino acids, which we can get from plants (and also laboratories, in some cases).
You can read our previous article about this, here:
We Are Such Stuff As Fish Are Made Of
What does he want us to know about collagen?
We’ll save time and space here: first, he’d like us to know the same as what we said in our article above
However, there is also more:
Let’s assume that your body has collagen to process. You either consumed it, or your body has synthesized it. We’ll skip describing the many steps of collagen synthesis, fascinating as that is, and get to the point:
When our body weaves together collagen fibrils out of the (triple-helical) collagen molecules…
- the cross-linking of the collagen requires lysyl oxidase
- the lysyl oxidase (which we make inside us) deanimates some other amino acids yielding aldehydes that allow the stable cross-links important for the high tensile strength of collagen, but to do that, it requires copper
- in order to use the copper it needs to be in its reduced cuprous form and that requires vitamin C
- but moving it around the body requires vitamin A
So in other words: if you are taking (or synthesizing) collagen, you also need copper and vitamins A and C.
However! Just to make things harder, if you take copper and vitamin C together, it’ll reduce the copper too soon in the wrong place.
Dr. DiNicolantonio therefore advises taking vitamin C after copper, with a 75 minutes gap between them.
What does he want us to know about glycine?
Glycine is one of the amino acids that makes up collagen. Specifically, it makes up every third amino acid in collagen, and even more specifically, it’s also the rate-limiting factor in the formation of glutathione, which is a potent endogenous (i.e., we make it inside us) antioxidant that works hard to fight inflammation inside the body.
What this means: if your joints are prone to inflammation, being glycine-deficient means a double-whammy of woe.
As well as being one of the amino acids most key to collagen production, glycine has another collagen-related role:
First, the problem: as we age, glycated collagen accumulates in the skin and cartilage (that’s bad; there is supposed to be collagen there, but not glycated).
More on glycation and what it is and why it is so bad:
Are You Eating Advanced Glycation End-Products? The Trouble Of The AGEs
Now, the solution: glycine suppresses advanced glycation end products, including the glycation of collagen.
See for example:
With these three important functions of glycine in mind…
Dr. DiNicolantonio therefore advises getting glycine at a dose of 100mg/kg/day. So, if you’re the same size as this rather medium-sized writer, that means 7.2g/day.
Where can I get it?
Glycine is found in many foods, including gelatin for those who eat that, eggs for the vegetarians, and spinach for vegans.
However, if you’d like to simply take it as a supplement, here’s an example product on Amazon
(the above product is not clear whether it’s animal-derived or not, so if that’s important to you, shop around. This writer got some locally that is certified vegan, but is in Europe rather than N. America, which won’t help most of our subscribers)
Note: pure glycine is a white crystalline powder that has the same sweetness as glucose. Indeed, that is how it got its name, from the Greek “γλυκύς”, pronounced /ɡly.kýs/, meaning “sweet”. Yes, same etymology as glucose.
So don’t worry that you’ve been conned if you order it and think “this is sugar!”; it just looks and tastes the same.
That does mean you should buy from a reputable source though, as a con would be very easy!
this does also mean that if you like a little sugar/sweetener in your tea or coffee, glycine can be used as a healthy substitute.
If you don’t like sweet tastes, then, condolences. This writer pours two espresso coffees (love this decaffeinated coffee that actually tastes good), puts the glycine in the first, and then uses the second to get rid of the sweet taste of the first. So that’s one way to do it.
Enjoy (if you can!)
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