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The Evolution of Diet
An anonymous reader writes Here's a story from National Geographic that looks at the historical diets of people from around the world and what that diet might look like in the future. From the article: "So far studies of foragers like the Tsimane, Arctic Inuit, and Hadza have found that these peoples traditionally didn't develop high blood pressure, atherosclerosis, or cardiovascular disease. 'A lot of people believe there is a discordance between what we eat today and what our ancestors evolved to eat,' says paleoanthropologist Peter Ungar of the University of Arkansas. The notion that we're trapped in Stone Age bodies in a fast-food world is driving the current craze for Paleolithic diets. The popularity of these so-called caveman or Stone Age diets is based on the idea that modern humans evolved to eat the way hunter-gatherers did during the Paleolithic—the period from about 2.6 million years ago to the start of the agricultural revolution—and that our genes haven't had enough time to adapt to farmed foods."
Inuit have lifespan 12 to 15 years shorter than average Canadians. Hazda mean life expectancy is 65 years. Let's cut the bullshit already, live like those people and flop over dead before your time
I doubt so-called "Paleolithic diets" are anything like people ate during that.
For example, people ate fruit then, but it was seasonal, and very different from the fruit we eat today. Same with veggies. The stuff we eat is nothing like the stuff that grew in the wild.
Also, people during that age were not especially healthy. They probably died in their 40s.
The Arctic Inuit may not have high blood pressure, but what about other diseases? Is there average life span any longer than ours?
Then there is the question of physical activity. During the stone age, getting too fat and/or being too inactive, were probably the least of your worries.
Are we really willing to give up coffee, or salt on our foods?
Reminds me of the Amish Diet - eat whatever you want, but walk everywhere. One Amish farmer in a study I remember reading of around 15 years ago walked 28 miles per day on average. The average for all the Amish in the study was 16 miles per day.
How come Slashdot never gets Slashdotted?
This claim: "So far studies of foragers like the Tsimane, Arctic Inuit, and Hadza have found that these peoples traditionally didn't develop high blood pressure, atherosclerosis, or cardiovascular disease."
Is based on studies that have been called into question recently. One researcher went so far as to call them "deeply flawed" and wondered if anyone had actually read the original studies.
http://www.cbc.ca/news/canada/...
"The 2014 study has found that Inuit do have similar rates of heart disease compared to non-Inuit populations, and that death rates due to stroke are "very high." "Most of the researchers never read [the original 1970s] papers. They just took it at face value that what they said is so,"
I think there is something to the "Paleolithic Diet" idea, but many people are Doing It Wrong.
The prehistoric people exercised all the time, every day. They ate meat when they could get it, which wasn't 100% of the time, and the meat they got was lean. They ate fruit when they could get it, which was almost never (e.g. berries in late summer, a few dried berries other parts of the year). They ate a variety of high-fiber roots, leaves, and other gatherable food. They didn't eat any processed carbs (white flour, white sugar, etc.).
If we lived more like that, we really would be healthier.
But some people take the idea to places I don't think are good. For example, making a "paleo cake" with no processed sugar sounds good, but if it has large amounts of ground nuts and cooked fruit, and is sweetened with maple syrup... it's really not something that the prehistoric people would have eaten and I'm dubious about the benefit.
Also, it is possible for people to adapt to changing conditions in a few generations; it's not necessarily true that evolution works so slowly that the diet from 10,000 years ago is still perfect for us. TFA talked about lactose tolerance in adults. In the cave-man days there was no evolutionary advantage to being able to consume dairy as an adult, but once people started keeping livestock and harvesting dairy, that changed. Now many people can digest lactose as adults.
TL;DR Eat lean protein, complex carbs rather than simple carbs, and get lots of exercise, and you will be healthy.
lf(1): it's like ls(1) but sorts filenames by extension, tersely
Inuit in modern Canada eat less walrus and drink more beer than Inuit from three centuries ago.
Certainly. However, traditional Inuit culture was pretty hard on folks. Although some people did make it into their 70's, many died much earlier - often of starvation (and infectious disease whose morbidity and mortality can be strongly influenced by nutrition). Although they rarely got heart attacks (we suppose, there were rather few autopsies done on these folk) and diabetes was almost unheard of, it's hard to call a traditional Inuit elder as 'healthy'. We also really don't know how long traditional peoples typically lived - birth and death statistics were not typically kept in the hinterlands and people's recollection of events 50 years in the past tends to be hazy.
So it always amuses me that the paleo folks think that the hunter gatherer existence represented the pinnacle of human evolution.
Faster! Faster! Faster would be better!
I think the most important aspect of caveman diet was the periods of thin, unsaturated blood of high dissolving power, called periods of starvation, once in a while, as far as cardiovascular disease goes. So instead of hitting the gym and starving your blood supply from nutrients by exercising too much, and wearing your body down with it, exercise only until you build and tone muscle without dragging the body through the starved mode, and for the starved mode artery cleaning simply starve, like don't eat nothing for 2 days at a time, once every 2 months or so. It's not that difficult or complicated, and it's cheaper than all that cardiovascular medication. In fact it's better if you do it monthly, or weekly, or daily. For instance, for a long time I had a habit of eating once a day, eating a whole lot, then not eating again for a whole day, and that allows for periods of blood thinness, as opposed to the habits of potato chip snackers, where it's not really the trans fat that kills - as even mother's milk has trans fat - but the constant snacking and keeping the blood saturated, to where temporary amorphous fat deposits get a chance to crystallize and become tough biofilm with the bacteria in blood, so they can no longer be redissolved. In fact garlic or heavy antibiotics might, might be able to break up biofilms but then you still have the relatively toughly crystallized cholesterol soap + fat cargo deposits, for which a good chest pounding or muscle pounding boxing match could loosen up. The questions are as simple as solubility in blood, biofilms, and mechanical shaking. Maybe they'll invent an ultrasound catheter they can stick down the arteries into a beating heart, and shake loose the crud, without an open heart surgery. But the issues are large fragments getting loose in the fat aorta, and getting stuck in the hair thin blood vessels of the brain and leg muscles, where the blood plumbing conduits are not so large.
Also, getting yourself very drunk to near death alcohol levels might help solubilize some of the cholesterol fat deposits easier during periods of starvation, but that has downsides to it too.
http://www.ncbi.nlm.nih.gov/pu...
Infant mortality had more to do with low average lifespans in the past - you can have a vast majority of people who make it to adulthood live into their 80s, and still have an average lifespan of 30 years, if 10 children die before they make a year old for every 1 that makes it past.
We tend to make the assumption that an average lifespan of 30 means that nobody lives past 35 years old - but that's simply not the case.
http://unlocked-wordhoard.blog...
"Consider this: If we accept as a given that the average life expectancy of the Middle Ages was 25, then life expectancy has tripled, right? Since we know from both historical and archaeological records that some people lived to 80+ years in the Middle Ages, wouldn't that mean that people are living three times as long? Shouldn't there be some 240 year olds running around, grousing that things just aren't the same since Thomas Jefferson died?
And therein lies the problem. Even if the statistic is accurate, people hear something very different than the statistic is saying. A stat talking about life expectance tripling is about the average tripling, but the way it is popularly perceived is that the length of time people live has tripled. And, of course, it isn't. If you're old enough to read this, a century from now you'll be dead, no matter how much life expectancy rises."