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I know, the science covered everything from teeth shape to metabolism and such. Humans are made to eat meat and vegetables and while some of it is disputed (the fact that the brain started to develop when we started eating meat), I think that meat is and should be a part of the diet. But there are people that can avoid it by using other dietary replacements. I don't know how I feel about that. Other researchers said that red meat is very bad, but again, I don't know if that holds. I would have to see if this subject is covered or not and maybe write something in this regard.