Why You Can’t Skimp On Amino Acids
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Our body requires 20 amino acids (the building blocks of protein), 9 of which it can’t synthesize (thus called: “essential”) and absolutely must get from food. Normally, we get these amino acids from protein in our diet, and we can also supplement them by taking amino acid supplements if we wish.
Specifically, we require (per kg of bodyweight) a daily average of:
- Histidine: 10 mg
- Isoleucine: 20 mg
- Leucine: 39 mg
- Lysine: 30 mg
- Methionine: 10.4 mg
- Phenylalanine*: 25 mg
- Threonine: 15 mg
- Tryptophan: 4 mg
- Valine: 26 mg
*combined with the non-essential amino acid tyrosine
Source: Protein and Amino Acid Requirements In Human Nutrition: WHO Technical Report
Why this matters
A lot of attention is given to protein, and making sure we get enough of it, especially as we get older, because the risk of sarcopenia (muscle mass loss) increases with age:
However, not every protein comes with a complete set of essential amino acids, and/or have only trace amounts of of some amino acids, meaning that a dietary deficiency can arrive if one’s diet is too restrictive.
And, if we become deficient in even just one amino acid, then bad things start to happen quite soon. We only have so much space, so we’re going to oversimplify here, but:
- Histidine: is needed to produce histamine (vital for immune responses, amongst other things), and is also important for maintaining the myelin sheaths on nerve cells.
- Isoleucine: is very involved in muscle metabolism and makes up the bulk of muscle tissue.
- Leucine: is critical for muscle synthesis and repair, as well as wound healing in general, and blood sugar regulation.
- Lysine: is also critical in muscle synthesis, as well as calcium absorption and hormone production, as well as making collagen.
- Methionine: is very important for energy metabolism, zinc absorption, and detoxification.
- Phenylalanine: is a necessary building block of a lot of neurotransmitters, as well as being a building block of some amino acids not listed here (i.e., the ones your body synthesizes, but can’t without phenylalanine).
- Threonine: is mostly about collagen and elastin production, and is also very important for your joints, as well as fat metabolism.
- Tryptophan: is the body’s primary precursor to serotonin, so good luck making the latter without the former.
- Valine: is mostly about muscle growth and regeneration.
So there you see, the ill effects of deficiency can range from “muscle atrophy” to “brain stops working” and “bones fall apart” and more. In short, any essential amino acid deficiency not remedied will ultimately result in death; we literally become non-viable as organisms without these 9 things.
What to do about it (the “life hack” part)
Firstly, if you eat a lot of animal products, those are “complete” proteins, meaning that they contain all 9 essential amino acids in sensible quantities. The reason that all animal products have these, is because they are just as essential for the other animals as they are for us, so they, just like us, must consume (and thus contain) them.
However, a lot of animal products come with other health risks:
Do We Need Animal Products To Be Healthy? ← this covers which animal products are definitely very health-risky, and which are probably fine according to current best science
…so many people may prefer to get more (or possibly all) dietary protein from plants.
However, plants, unlike us, do not need to consume all 9 essential amino acids, and thus may or may not contain them all.
Soy is famously a “complete” protein insofar as it has all the amino acids we need.
But what if you’re allergic to soy?
Good news! Peas are also a “complete” protein and will do the job just fine. They’re also usually cheaper.
Final note
An oft-forgotten thing is that some other amino acids are “conditionally essential”, meaning that while we can technically synthesize them, sometimes we can’t synthesize enough and must get them from our diet.
The conditions that trigger this “conditionally essential” status are usually such things as fighting a serious illness, recovering from a serious injury, or pregnancy—basically, things where your body has to work at 110% efficiency if it wants to get through it in one piece, and that extra 10% has to come from somewhere outside the body.
Examples of commonly conditionally essential amino acids are arginine and glycine.
Arginine is critical for a lot of cell-signalling processes as well as mitochondrial function, as well as being a precursor to other amino acids, including creatine.
As for glycine?
Check out: The Sweet Truth About Glycine
Enjoy!
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Easily Digestible Vegetarian Protein Sources
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It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
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
❝What could be easily digestible plant sources of protein for a vegetarian. My son is a gym holic and always looking for ways to get his protein from lentils other than eggs. He says to reach his protein requirement for the day, the amount of lentils he has to eat is sometimes heavy on the gut. Would really appreciate if you throw some light on this ❞
Unless one has IBS or similar (or is otherwise unaccustomed to consuming healthy amounts of fiber), lentils shouldn’t be at all problematic for the digestion.
However, the digestive process can still be eased by (speaking specifically for lentils here) blending them (in the water they were cooked in). This thick tasty liquid can then be used as the base of a soup, for example.
Soy is an excellent source of complete protein too. Your son probably knows this because it’s in a lot of body-building supplements as soy protein isolate, but can also be enjoyed as textured soy protein (as in many plant-based meats), or even just soy beans (edamame). Tofu (also made from soy) is very versatile, and again can be blended to form the basis of a creamy sauce.
Mycoproteins (as found in “Quorn” brand products and other meat substitutes) also perform comparably to meat from animals:
Meatless Muscle Growth: Building Muscle Size and Strength on a Mycoprotein-Rich Vegan Diet
See also, for interest:
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White Noise vs Pink Noise
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.
It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
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
❝I live in a large city and even late at night there is always a bit of background noise. While I am pretty used to it by now, I find I don’t sleep nearly as well in the city as I do in the country. I have seen some stuff about “white noise” generators. I was wondering whether you have any thoughts about the science behind these, and whether it is something I should try out – or maybe I should be trying something completly different.❞
The science says…
❝Our data show that white noise significantly improved sleep based on subjective and objective measurements in subjects complaining of difficulty sleeping due to high levels of environmental noise. This suggests that the application of white noise may be an effective tool in helping to improve sleep in those settings.❞
That said, you might also consider “pink noise”, which is very similar to white noise (having all frequencies normally audible to the human ear), but has greater intensity of lower frequencies, creating a more deep and even sound. While white noise and pink noise are both great at “muting” external sounds like those that have been disturbing your sleep, pink noise may have an advantage in helping to stimulate deep and restful sleep:
❝This study demonstrates that steady pink noise has significant effect on reducing brain wave complexity and inducing more stable sleep time to improve sleep quality of individuals.❞
Source: Pink noise: effect on complexity synchronization of brain activity and sleep consolidation
There may be extra benefits to pink noise, too:
Acoustic Enhancement of Sleep Slow Oscillations and Concomitant Memory Improvement in Older Adults
Rest well!
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Broccoli vs Collard Greens – Which is Healthier?
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Our Verdict
When comparing broccoli to collard greens, we picked the broccoli.
Why?
Both are great and it was close!
In terms of macros, there’s really nothing between them, so this first round’s a tie.
In the category of vitamins, broccoli has more of vitamins B1, B2, B6, and C, while collards have more vitamin A, and they’re approximately equal in other vitamins they both contain, so that’s a 4:1 win to broccoli here.
Looking at minerals next, broccoli has more phosphorus, potassium, selenium, and zinc, while collards have more calcium, copper, iron, and manganese, for a 4:4 tie in this round.
In other considerations, broccoli contains sulforaphane (that’s good) while collards are slightly higher in polyphenols, though broccoli’s very good for those too. So this round’s a tie, most reasonably.
Adding up the sections makes for a modest yet clear overall win for broccoli (largely on the strength of the vitamins), but by all means enjoy either or both, as diversity is best!
Want to learn more?
You might like:
Broccoli Sprouts & Sulforaphane
Enjoy!
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Super Agers – by Dr. Eric Topol
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You may be wondering what sets this book apart from all the other “let’s look at what supercentenarians do” books.
And the answer is: this one is, as the subtitle suggests, more strongly evidence-based. We say “more strongly”, because the others are evidence-based too, but that evidence base in those cases is mostly observational studies (due to the difficulty of doing randomized controlled trials (RCTs) with this kind of thing, because of the population samples required). This one addresses that by taking the conclusions from the observational studies (and interventional studies and RCTs, where possible) and then doing science to all of the constituent parts, for which there is RCT-derived evidence.
Thus, Dr. Topol takes us through the evidence for various factors, including dealing with obesity and diabetes, reducing cardiovascular disease, avoiding cancer, and deferring (ideally indefinitely) neurodegeneration, as well as controlling our immune system (both ways; defending against external threats while not falling to internal autoimmune problems), and even a chapter devoted to the critical role of promoting mental health, without which the rest of health won’t do us any good. Again, all based on the evidence of how each intervention helps us to live longer, measurably healthier lives.
The style is on the hard end of pop-science, sometimes slipping into outright academia before (it seems) the editor got let back into the room. It’s still lighter reading than actual academic papers, and for those who do like reading actual academic papers, there are 98 pages of bibliography at the back. So, taking up the entire last quarter of the book, basically.
Bottom line: if you’d like very evidence-based deep insights into what actually enables us to live the longest, healthiest lives, then this is a top-tier book for you.
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Red Lentils vs Green Lentils – Which is Healthier?
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Our Verdict
When comparing red lentils to green lentils, we picked the green.
Why?
Yes, they’re both great. But there are some clear distinctions!
First, know: red lentils are, secretly, hulled brown lentils. Brown lentils are similar to green lentils, just a little less popular and with (very) slightly lower nutritional values, as a rule.
By hulling the lentils, the first thing that needs mentioning is that they lose some of their fiber, since this is what was removed. While we’re talking macros, this does mean that red lentils have proportionally more protein, because of the fiber weight lost. However, because green lentils are still a good source of protein, we think the fat that green lentils have much more fiber is a point in their favor.
In terms of micronutrients, they’re quite similar in vitamins (mostly B-vitamins, of which, mostly folate / vitamin B9), and when it comes to minerals, they’re similarly good sources of iron, but green lentils contain more magnesium and potassium.
Green lentils also contain more antixoidants.
All in all, they both continue to be very respectable parts of anyone’s diet—but in a head-to-head, green lentils do come out on top (unless you want to prioritize slightly higher protein above everything else, in which case, red).
Want to get some in? Here are the specific products we featured today:
Enjoy!
Want to learn more?
You might like to read:
- Why You’re Probably Not Getting Enough Fiber (And How To Fix It)
- Eat More (Of This) For Lower Blood Pressure ← incidentally, the potassium content of green lentils also helps minimize the harm done by sodium in one’s diet
Take care!
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More Mediterranean – by American’s Test Kitchen
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Regular 10almonds readers will know that we talk about the Mediterranean diet often, and with good reason; it’s been for quite a while now the “Gold Standard” when it comes to scientific consensus on what constitutes a good diet for healthy longevity.
However, it’s easy to get stuck in a rut of cooking the same three meals and thinking “I must do something different, but not today, because I have these ingredients and don’t know what to cook” and then when one is grocery-shopping, it’s “I should have researched a new thing to cook, but since I haven’t, I’ll just get the ingredients for what I usually cook, since we need to eat”, and so the cycle continues.
This book will help break you out of that cycle! With (as the subtitle promises) hundreds of recipes, there’s no shortage of good ideas. The recipes are “plant-forward” rather than plant-based per se (i.e. there are some animal products in them), though for the vegetarians and vegans, it’s nothing that’s any challenge to substitute.
Bottom line: if you’re looking for “delicious and nutritious”, this book is sure to put a rainbow on your plate and a smile on your face.
Click here to check out More Mediterranean, and inspire your kitchen!
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