11.   For decades, tamoxifen has been prescribed for post-menopausal women with early-stage breast cancer whose tumors are sensitive to the hormone estrogen.

12.   For these symptoms, many women take the hormone estrogen.

13.   Furthermore, another study by German researchers reported at the conference on Monday found that PhIP weakly mimics the female hormone estrogen.

14.   Genistein is an isoflavone, a compound that is genetically similar to the human hormone estrogen.

15.   Formerly, scientists had assumed that the sickness early in pregnancy was related to a sharp rise in the hormone estrogen.

16.   In women, by contrast, a longer index finger is associated with higher levels of the hormones estrogen and luteinizing hormone, both critical hormones for female reproduction.

17.   Instead, they found that it raised levels of the female hormone estrogen.

18.   It produced unwelcome changes in blood-cholesterol levels and a marked increase in levels of the female hormone estrogen.

19.   Its biochemistry was promising, since it prevents the hormone estrogen from stimulating breast tissue.

20.   Nevertheless, Cooke said, the study suggests that components of soy that mimic the action of the hormone estrogen suppress the immune system.