You know I currently live in japan and Soy is a HUGE staple in their diets. So how can you explain the fact that they have the skinniest, healthiest, longest living people in the entire world! My employee's grandfather died recently he was 106! and that's common. So that's interesting that the researchers made those statements 99.9% of the japanese ladies I see here are stick thin with hair to their buttes! And yes they put soy in their hair products! So seeing is believing to me! you can't believe everything you read especially not in this case.
In the East soy is fermented while in the west it is not. If you examine the way soy is consumed here vs in the East you will see a marked difference. Some people are not estrogen dominant so they don't see the effect while others are strongly estrogen dominant and see the effect quickly. Just a note - about 3/4 women I know who experienced breast cancer were advised to cut all soy from their diets do to possible estrogenic effect.