I read a couple of articles which said that some newer pesticides often have "estrogenic properties" or mimic estrogen.

The current study on soy and fertility highlights an important point about soy: Its effects don't begin and end with its estrogenic ways, Chavarro says.

Optimal dosing remains unknown, and the researchers say that since ginseng has estrogenic effects, it should not be used by people with hormone-sensitive cancer.