Many such tests done on the harmful effects of soy are in doubt simply because the research was born out of the business war between the soy lobby and the milk lobby.

The solution, however, is simple -- the more processed the soy product, the less harmful compounds are left. Edamame is probably the worst, but as you step up to soymilk, tofu, and miso, the positives outweigh the negatives.

And, of course, balance it out for a moderate intake. Don't use JUST soy for protein. Mix various beans, grains, and oils to get the essentials.

Myself, I only make lunches for work using soy maybe every other week. That's all.