Re: The whole "Foods for Blood Type" misconception!
While I have some doubts for the
Blood Type Diet s, what you said is not a good reason.
Chimpanzees, by example. Taken from wikipedia.org : Common Chimpanzees have an omnivorous diet, a troop hunting culture based on beta males led by a relatively weak alpha, and highly complex social relationships; Bonobos, on the other hand, have a mostly herbivorous diet and an egalitarian, matriarchal, sexually promiscuous culture.
But they are in fact 2 species, I don't know if they could reproduce with each other. What diet should their offspring have?
Humans are very particular, and according to D'Adamo, each blood type fits with a particular era of human evolution and the associated diet. You can not deny that the human diet changed a lot over the (thousand of) years. Much more than the chimpanzee diet.
Humans tend to interbreed a lot. If, in a particular place, A people, with ancestors that are only A's, breeded with A's, there would be one and unique blood type. But when these farmers or whatever begins to mix with O's, then it becomes quite complicated.