Soy, like ANYthing else in the world, is bad for you if it is making up too much of your diet. Drinking soymilk for breakfast, eating tofu for lunch and dinner and fake meats and soy cheese and soy this and that is going to be bad for you but if you ate apples as 80% of your diet it would cause problems too. It is all about moderation. Chinese people have eaten soy for years (and no not just fermented like all the articles want to say) i have lived in China for 16 years and they drink soymilk, eat soybeans,soy sauce and tofu. and have way less soy related problems than Americans so it is just when you try to subsitute EVERYthing for soy that you will have problems.