How ancient people fell in love with bread, beer and other carbs
nature.com
nature.com
"Please don't post shallow dismissals, especially of other people's work. A good critical comment teaches us something."
I would say that compared to a news paper subscription for example, the mental stimulus provided by HN is far greater.
My own opinions on this and many other topics are almost all controversial.
That said, the flagging here seems to have killed the conversion entirely. I was kinda excited to discuss the topic. Maybe it will rekindle. Idk...
As a long time reader, I highly value the quality of discussions here. Your work is much appreciated, thank you.
1. there seems to not be any hard scientific consensus
2. diet is very integrated to culture, and therefore saying "diet X is good/bad" is often taken as a personal/tribal attack.
3. There's always special-interest groups that *heavily* benefit from any preferential diet. (Farmer, stores, marketing group you name it) And they often do have strong influence to actually push through an agenda (see any overarching farmer subsidies/regulation in any country)
The first two being a reason it get heated, and the last one being the one adding the fuel.
Prefacing any dietary statement with "for me, X works..." with a story might be better than anecdata "I've heard it works.."
If I were to summarize:
1. We derive energy from three major macronutrients (protein, fat and carbohydrates)
2. Our body has certain macronutrients it cannot synthesize and NEEDS for healthy functioning (essential fatty acids and essential amino acids)
3. Our bodies are largely energy efficient (by which I mean the processes to produce energy are readily actionable with average hormone levels of insulin/ghrelin/leptin etc.) when consuming carbohydrates, but can turn to other nutrient sources when they are not to be found.
4. Our body composition can be manipulated by manipulating our energy expenditure either via manipulating the caloric content of food or via the preferential production of body tissue from horomonal influence (this is why muscle mass increases when using testosterone even if caloric intake is kept constant but above a certain macronutrient threshold).
5.There are a certain set of micronutrients we need on a continuous basis (the exact amounts of which are up for debate but the ranges seem to be reasonably agreed upon).
6. Our diet influences our gut fauna and this further influences how much nutritional value we get from our diet, it is quite a symbiotic cycle.
7. Barring certain specific horomonal imbalance diseases, everyone's body largely abides by the above principles, (i.e as special as everyone thinks they are, they're probably more average than not when it comes their metabolism).
Also we're very very good at fasting (using our fat store):
https://en.wikipedia.org/wiki/Angus_Barbieri%27s_fast
382 days without eating and no issue at all.
This isn't true. Although the Intuit people were largely carnivorous, they did not have a "keto" diet. They ate a lot of meat, but the animals they ate have extremely high amounts of natural glycogen. They also did not eat as much fat as expected, because animal fat was their source of heat and light for long winter nights.
> ...When is abundant, the average daily diet of the adult Eskimo consists approximately of 30 to 40 grams of carbohydrate (which includes glycogen), 250 to 300 grams of protein, and about 150 grams of fat (FA/G=1.2). These amounts of meat are apparently not heroic, for it has been alleged that the Yakuts, on the Low Steppe, east of the Lena, eat as much as 25 and 30 pounds of meat a day.” —I.M. Rabinowitch (1936)
If you are curious, this is an accessible review of the available materials.[1]
[1] https://web.archive.org/web/20201112035644/https://www.freet...
(According to the linked Wikipedia article.)
One thing that should be agreed upon, but isn't, is that carbohydrates are not necessary in the same way alcohol is not.
While carbohydrates are an easily available source of energy, one can be perfectly healthy eating a diet with purely incidental carbohydrate intake.
I'd say globally we can add on average 10 years of good quality life to every single person if they understood the points above and acted accordingly.
This and some form of healthy regular exercise and one is basically maximizing his lifespan in best currently available way. Increased happiness level is just a nice by-product.
Considering all this, my approach is to just try and eat less, hence mitigating the downside of dietary induced problems. A good way to eat less is to eat more non-starchy vegetables, which are mostly micronutrients embedded in paper.
There are also a few surrogate markers with strong evidence it is worth measuring in a serial fashion and trying to improve eg LDL, glucose tolerance, CRP. Coronary calcium scoring with CT is also worth doing if you are 40+ and have been eating like shit most of your life or have bad genetics for heart disease.
https://www.npr.org/sections/health-shots/2018/06/13/6196193...
https://www.ahajournals.org/doi/10.1161/CIRCRESAHA.118.31334...
I mean, the title of the article, even on HN, is "How ancient people fell in love with [carbs]". Like they were going to the supermarket and choosing the food they "love".
For me, when it comes to deciding what diet is right, I just look at my relatives who lived for a long time. In all cases they ate "standard"/traditional foods as regular meals. There is a distinct lack of "diets", supplements and other fads. They didn't eat so much that they got fat, but they also didn't strictly limit their intake to maintain a ripped physique or whatever. It's quite simple really.
Drying, smoking, fermenting, salting, pickling, etc. And, adding honey (for sugar).
Humans have evolved for a very long time as hunter and gatherers, and we have evolved to eat diet consistent with how we evolved, namely low carbohydrate diets. The reason why grain prevailed was because grain could support more humans per acre of land. Humans did not choose grain for long term health benefits, but rather for efficiency reasons.
It seems that many health problems stem from high carbohydrate diets. Are there reasons why we shouldn't switch to a low carbohydrate diet?
[0]https://www.amazon.com/Good-Calories-Bad-Controversial-Scien...
No, they don’t. First of all, as is pointed out in the article, people were eating massive amounts of fat and meat right up till the Neolithic because without crops, there just wasn’t enough starchy stuff to sustain a population of people, not outside weird settlements like this one. And even if these people were eating starches 100,000 years ago, that’s a drop in the bucket. We have been eating meat and fat for millions of years, and the evidence is absolutely clear that a ketogenic carnivore diet is the healthiest diet. It works miracles on everyone who tries it. There are piles of people who cured themselves of very serious health problems with it.
> the evidence is absolutely clear that a ketogenic carnivore diet is the healthiest diet
There is no single blanket "healthiest diet". Dietary requirements vary, sometimes dramatically, across the gamut of humanity; and then:
> It works miracles on everyone who tries it. There are piles of people who cured themselves of very serious health problems with it.
That is a super misleading statement. A diet is not a miracle cure and should never be presented as one, because like all snake-oil health claims it sells false hope to the desperate. A low-GI diet may improve insulin resistance; a low calorie diet may improve obesity. Neither of these are certain outcomes, neither of them are cures for disease, and neither strategy even particularly requires a ketogenic carnivore diet.
> It works miracles on everyone who tries it. There are piles of people who cured themselves of very serious health problems with it.
... very enticing.
Then I wonder, if this were true, why isn't this backed by hard science? Even bad motives and bad statistics cannot hide miracles!
I also wonder, if meat and fat based diet was the best for us, and yet humans AS A society (not as a person) evolved to eat card based diet obviously there has to be some advantage. What it is, I do not know, and I wish this would not change the subject, but the only thing that comes to mind is that eating carbs is the only sustainable way for our species.
While these questions are unresolved, I eat meat once a week, and am otherwise vegatarian. Feeling healthy btw.
We seem to have a hard time finding populations following any specific good diet with measurably good or better health outcomes than average that don’t have the compounding variable of access to health care:
USA is the only developed country with a falling life expectancy.
It's not like you can lock thousands of humans (let alone one) in a controlled environment for 50 years and study long term effects of diets which even then wouldn't be perfect.
I'm not saying it's impossible, and science is the only way forward. I'm just that it is a mess and we know less than we think.
FWIW I have been on a keto-genic diet for coming up on a decade now and feel fantastic as well. But like I said before, that's not worth much. I do it for the "brain" high I get on the diet and also it totally gets rid of my acid reflux issues.
When it comes to evidence, water fasting for multiple days improves insulin resistance and lipid profile, and lowering blood pressure. There are probably even more benefits (through autophagy, though that can be a mixed bag because some viruses seem to hijack that). Some of this also applies to intermittent fasting.
The chemicals in meat, fat and organs can be synthesized chemically or made in labs where relevant tissues are grown directly instead of the traditional way. And only a fraction of the population has health problems that would necessitate the diet anyway.
It's only so prevalent as the US subsidizes low quality corn, soy, and wheat.
Regenerative grazing can be done in a way that brings health back to the soil.
https://untappedgrowth.com/decentralizedgrazing/
Further, eggs are probably one of the healthiest foods one can consume, and people even in urban settings (obviously not all) can have a couple chickens.
Plus, the bugs are much more delicious if turned into eggs. I personally don't want to eat the bugs or live in ze pod.
Now take for example the lipid hypothesis of heart disease. It’s absolutely riddled with holes. And there is more than enough evidence to topple it over. But the story repeats itself. And there are many things that are ignored. Many, many people are lucky enough to never be concerned with it. There are an unlucky few, though, who’s stories intersect with this unfortunate little oversight.
Anyway, our bodies need carbs. If you don’t eat them your body just makes them. They are required for explosive effort and other things. But we were never intended to eat mostly carbs, despite what people say. For millions of years people mostly ate animals. The modern human eats almost nothing but carbs and it results in a lot of problems that aren’t classified as diseases now but will be later. Cheers.
We added carbs into out diet, by our own choice. We are at all effect genetically identical to our pre-agriculture ancestors.
Found it. Pdf warning
http://www.jbc.org/content/87/3/651.full.pdf
Downvote all you want, but it's true. Manny people do it today, and I've done it myself for a period.
That said I'm not saying there aren't benefits to fruits and veg, just that you can be perfectly healthy without them.
Adequate amounts? All I can tell you is that I know a small handful of people who have eaten an exclusively carnivore diet for years on end without suffering from scurvy.
e.g.
https://doi.org/10.1038/s41467-020-14723-0
https://doi.org/10.1016/j.jhevol.2013.12.014
https://www.researchgate.net/publication/351402155_Diet_of_t...
2) Hunting, cave paintings and religion may have been related to one group of people, seed-gathering and baking to another. It may just not have occurred to the painters to include the activities and products of the gatherer side of the hunter-gatherer economy in their paintings.
Cultures with excellent hygiene practices tended to do well.
The resulting insulin production inhibits fat oxidation and increases fat storage.
https://www.youtube.com/results?search_query=fung+obesity+ep...
https://www.biolayne.com/articles/research/its-not-calories-...
Whatever is available in the stores is not the same thing we ate 100 (random number) years ago.
And that's not limited to wheat, but I reckon most commercially available fruits and vegetables are much worse than their counterparts grown organically in one's own garden. They certainly taste much worse.
Carnivore is much maligned still, but I bet the reason it works so well is that you avoid eating an unknown amount of chemicals that are routinely sprayed on unripe plant matter, which has to count for something.
A slice of cake is, in fact, an "excessive amount" - it's more food than a pound of cheese.
Eating a pound of cheese does, indeed, feel "excessive", while a slice of cake (or two) is just a chaser after a full meal for most people.
Diesel fuel has a huge amount of calories, but your body obviously can't process it properly.
What processed food brought is very unnatural combination of a lot of refined carbohydrates and a lot of fat especially in the form of polyunsaturated seed oils. Seed oil consumption in substantial quantities is relatively new thing (like 100 years). And even olive oil (with its rather low polyunsaturated fat content) was never staple food. In Ancient Greek literature, for example, there are more references to its usage as cosmetic or for lighting than for eating.
But it's a significantly bigger problem today, so people are trying to point out things that have changed after the invention of writing.