There is much controversy regarding substances with estrogen-like properties in our environment. Google soy and estrogen to learn both sides, but both agree that...
"Soy does indeed have estrogenic properties. It contains phytoestrogens, which are produced by plants and mimic the action of estrogens at the body's estrogen receptors."
Again, the reason that pesticides intefer with hormonal balance is because of the chemical's estrogen-like properties. This is becoming more of a problem than people realize and may account for many cancers, esp. breast.