Researchers measured the levels of phyto-estrogens in the urine of 144 British women.

CNN: Dangers on the Home Front

It has come up with a "ladies' loaf" made from soy flour instead of wheat and linseed oil (another phyto-estrogen-rich product) instead of margarine.

CNN: Dangers on the Home Front

Tofu, miso and tempeh are also excellent sources of phyto-estrogens.

CNN: Dangers on the Home Front