Actually, Pity, as I understand the studies the estrogen like component of soy (does actually bind to estrogen receptor sites) is less "estrogeny" (scientific term, I know) and doesn't form an exact match with the natural estrogen in our bodies. In this way it is actually suspected that it MIGHT just keep you a little more manly by blocking your real estrogen from getting through... just another point of view out there on the subject.

But frankly it is all splitting hairs if you ask me. Like I said, if soy could grow breasts every Japanese woman would be dragging her breasts behind her.