This is a silly meme. Plants contain phytoestrogen, which is not the same thing as estrogen. Ingestion of phytoestrogen actually seems to reduce the body's own natural estrogen production, which has the effect of reducing female fertility. Eating soy does not turn men into women, despite what insecure dudes on the internet may have told you. (Amusingly, despite all the hand-wringing about soy, I have never seen a similar campaign to decry milk, which actually does contain estrogen (although inert)).