Soy is consumed in mass quantities in asia. However, Menshealth did an article about Soy being bad for men way back.
Soy's Negative Effects | Men's Health (Interesting read)
I'm on the fence about this. Soy's a staple in Asia (soy milk, tofu, soy sauce) and I'm not seeing mass epidemics of male diseases in high consumption countries.
That said, for some reason I'm allergic to American brand soy milk, and not Asian brand soymilk. Go figure.