D.M.
Soy is commonly used to treat the effects of menopause due to the estrogen similar substance found in it. 90% of the worlds soy crop is geneticaly altered and now has a higher concentration of "estrogen". There is very little scientific evedience as to what exactly it does or to substantiate any claims due to its rather recent apperance as a food and more so of the engineered stuff. However, it is obvious that soy has an effect on the body and hormones. I don't think I would cut soy out all together but there is not much reason to consume large amounts. Soy is an easy replacement for many foods but certainly not the only way to get the nutrition you need.