Can drinking too much soy milk can have certain undesired effects on a man? Actor Jeremy Piven, star of the HBO series Entourage, says that he was drinking about 12 cups of soy milk daily, then "found out soy milk has enough estrogen for [him] to grow breasts."< p>

But is this even possible? It seems that while 12 cups of soy milk daily is a lot, and a lot more than anyone should reasonable drink, studies have not shown that too much soy milk has any effects on a man's breasts.