This is a follow up to another article that I posted.  Since there is always some conversation around phyto estrogens, i thought that this may be interesting to a few here on the forum.

Link

Estrogen is known to increase breast cancer risk in some women by firing up the proliferation of breast cells, he said. At the time, many scientists thought soy would reduce estrogen levels through the decoy effect.

They were surprised, Warren said, to find that soy supplements actually increased the proliferation of breast cells in animals. Still, human studies done so far don't show any evidence that tofu causes breast cancer; one Chinese study found a protective effect for women who ate soy during adolescence.

Nor do studies back up the notion that soy helps women with menopausal symptoms such as hot flashes, Warren said.