1.   But they can also mimic the hormone or block or stimulate its action in adults.

2.   Although she cautions that women who have estrogen-sensitive breast cancer may want to choose another approach because of this tendency to mimic the hormone.

3.   And it mimics hormones, which can lead to birth defects.

4.   One theory is that the build-up of man-made chemicals in the environment -- many of which can mimic female hormones -- could be interfering with male embryo development.

5.   Scientists agree that certain synthetic chemicals may mimic reproductive hormones.

6.   The fungus secretes a mycotoxin that mimics the hormones in mares and can lead to both early and late abortions.

7.   The mycotoxin, a toxin produced by a fungus, mimics the hormones in mares and can lead to early and late abortions.

8.   The sex-changing chemicals, which mimic female hormones such as estrogen, are present in many pesticides and plastics.

9.   The theory is that zearalenone somehow mimics a hormone in horses, causing mares to abort.

10.   These chemicals, they say, mimic natural hormones like estrogen and even in minute quantities can disrupt vital processes like fertility and fetal development.