Cecil:
This is in response to your article on the paleo diet, found here:
Will a Paleolithic diet do me any good? - The Straight Dope.
Unfortunately, I don’t think you did a very good job representing what the paleo diet really is. Some of this is not your fault as like in all things related to diet, religion, politics, and Beyoncé, there is a lot of wishful thinking and misinformation out there to sort through.
To have a more sober and thoughtful discussion on the merits of the paleo approach I’d recommend the book “The Paleo Manifesto” and the documentary “The Perfect Human Diet.” I think both do a good job of explaining and supporting the thesis in a reasonable way. At any rate, I would consider that to be a more balanced approach the simply googling “paleo diet skeptic” skimming a few articles and then writing a quick 1,000 words or so.
The basic thesis of Paleo, is that organisms tend to thrive in environments similar to the ones in which they adapted to through evolution. This is why goldfish have failed to successfully colonize arid grasslands, and it should be an intrinsically obvious and agreeable proposition. Organisms may survive and through evolution eventually adapt to new environments. For example, if we continue to raise gorillas in confined spaces in zoos and feed them gorilla biscuits instead of the diet they eat in the wild, I have no doubt gorillas will eventually adapt to a sedentary lifestyle of munching on gorilla biscuits. In the meantime though, gorillas in captivity fed this diet suffer from a variety of maladies that their wild kin do not. Admittedly zoo animals have some advantages, too and are less likely to suffer from parasitic infections, etc.
I use the paleo diet because, because, quite simply, I want the best or both worlds to maximize my health and enjoyment of life. I want to thrive. If I spend the next five or six decades, eating highly processed foods, being sedentary, and feeling shitty all the time, and then eventually falling victim to modern day health problems of obesity, diabetes, hypertension etc it will be small consolation to know that my suffering will result in more adapted descendants millennia hence. I want to feel good now.
The fact is that human diet changed very dramatically with the onset of the agricultural revolution 10,000 years ago, and that we are still adapting to those changes. For example, we are still adapting to eating dairy as adults, and that is a relatively new change. As a result some people are lactose intolerant. They lack the mutation that began to spread as dairy consumption in adulthood became more prevalent.
There are foods that humans are well adapted to, ones we are partially adapted to, and ones to which we are not adapted. Eating the latter doesn’t necessarily mean we get sick or die, but if we want to stay healthy, feel good and thrive we should try and maximize the ones to which we are well adapted (recognizing of course that their are variations within populations, and individuals, I.e. Lactose)
Contrary to your article we do have a very good idea of what the diet of ancient man was like, both through archeology and chemical analysis of human bone fragments. It is possible to analyze strontium levels, calcium, collagen, and the makeup of human remains, and tell in great detail what that person ate. Combining that with analysis of enamel, tooth wear, and the general archeological record and a very detailed and clear picture of those diets is available.
Here is one such article on Latin American populations I found in about 10 seconds:
http://luna.cas.usf.edu/~rtykot/PR39%20-%20Enrico%20Fermi%20isotopes.pdf.
There are many more easily available to the interested reader. A detailed discussion can be found in both the sources I listed at the top of this post.
The bottom line is that up until about 10,000 years ago, our ancestors ate a lot of protein, nuts, berries, fruits, some vegetables and a lot less (if any) dairy, grains, legumes than we do now, and they didn’t eat any of today’s very highly processed foods.
Today’s food pyramid, or “plate” is designed by committee, lobbyists, politicians and may not really represent what is healthiest for us. Livestock diets are less controversial because the livestock really don’t get a say. Animals on a feed lot are fed a diet specifically designed to fatten them up, to make them eat past the point of satiation. It bears little resemblance to their adapted diets, and they suffer health consequences and often require supplementary medication to keep them alive while they are on that diet. The composition of the feed lot diet is virtually identical to the FDAs recommended food plate. No thanks.
Food today is a business, a product that is designed specifically to make us crave and consume it. It is designed to make us choose it and to maximize our consumption of it. It is not designed to help us thrive.
I don’t think it’s foolish to think that as a whole we are only partially adapted to our current diets and lifestyle and that it has changed faster than our ability to adapt to it, and that this created some modern health issues. If we are suffering due to that maladaptation it makes logical sense to adjust our diets and lifestyles to the degree that enables us to thrive.
That is what paleo is about, and if it’s a fad it’s one that’s at least five million years old.