Ok well, I always wondered about that!
All I can say is I have O blood and I AM healthier eating more meat n' such. I was not at my best as a vegetarian, but who knows....lots of reasons that may have been.
I always thought it had more to do with endomorph, ectomorph, mesomorph type-dealy. More crap-o-la ya think?!
For example, mesomorph types do better with lots and lots of high-protein food.
What do y'all think? Anyone eat according to blood type or body type?
