>>3236628it metabolizes into estrogen in like 2/3 of caucasians
if you were genetically predisposed and drank a liter of soy milk a day you'd end up with tits, like one specific horror story i remember about some american guy who got accused of supplementing estrogen by his doctor
i wouldn't recommend doing that at all srs
asians and blacks are somehow by-and-large immune to this problem which i never understood. genetics means more than anyone cares to admit