Vegetarian, vegan and raw diets can be healthful, probably far more healthful than the typical American diet. But to call these diets “natural” for humans is a bit of a stretch in terms of evolution, according to two recent studies.
Eating meat and cooking food made us human, the studies suggest, enabling the brains of our pre-human ancestors to grow dramatically over a few million years.
Although this isn’t the first such assertion from archaeologists and evolutionary biologists, the new studies demonstrate that it would have been biologically implausible for humans to evolve such a large brain on a raw, vegan diet and that meat-eating was a crucial element of human evolution at least a million years before the dawn of humankind.
Excerpt from an article written by Christopher Wanjek in the Washington Post. Continue HERE
WANDERLUST 
I may be over-extrapolting your argument here, but it seems to me that just because meat was crucial in the development of our large brains it does not follow that meat-laden diets are at all the way to go.
Industrialised meat production is a far cry from the hunting and scavenging that early humans were required to do; though I would agree that trying to argue that a vegan diet is “natural” might be a bit silly, it’s also just not the best argument for adopting that kind of lifestyle.
Raw diets are just strange to me though; cooking is the shizz!