I tried to find some evidence on this topic. The last thing I want or need is more estrogen in my system when i'm trying to sculpt my pecs, know what I mean!
Hahahaha! All the man-boobs I have ever seen could be attributed to too many cheeseburgers, not soy! Soy is my last choice for protein, but I don't avoid it altogether. I prefer hemp, rice protein, beans and I make the best seitan ever!