While there are many health benefits to soy, there are also many downsides.

In creating a meal replacement drink and intending to rely heavily on soy protein isolate, I did hours of research to disprove my friend's claim that moderate-high soy consumption was detrimental. In the end I was forced to concede that my friend was, in fact, correct about this matter.

Even 50 grams of soy protein isolate per day appears to be flirting with trouble. And theoretically soy protein isolate should have a fair deal of the phytoestrogens removed compared with raw soy.

Soy has health benefits, IN MODERATION. The level of safe soy consumption is lower than many proponents claim and it has detrimental impacts on both sexes.