Originally Posted by triplag
because in a protein powder youre consuming only protein right? excluding all other organic material like when you eat tofu or drink soy milk??
yes, but "protein" is a category of chemical, not a chemical in and of itself. isolating the protein in soy doesn't give you the same "thing" as isolating the protein in egg or milk. they're all proteins and should theoretically do the job of proteins, but they interact with your body in different ways. and yes, that goes for the actual proteins themselves, in isolation from all other organic material.