1.   All these factors are associated with a diminished release of the ovarian hormones estradiol and progesterone, which appear to influence the development or growth of breast cancer.

2.   Current treatments include Prozac and hormonal analogues that suppress the ebb and flow of ovarian hormones.

3.   The researchers say exercise in young women may reduce risk by delaying the onset of monthly periods, during which ovarian hormones bombard breast tissue.

4.   When prolactin soars, ovarian hormones like estrogen plummet.

5.   Women for whom any hormone supplement is medically inadvisable or unwanted might try consuming more foods with effects that mimic those of ovarian hormones.