21.   Then, doctors say, the best course may be to use the hormones for a few years at the height of their symptoms, and taper off gradually.

22.   This device also uses a hormone, progestin, which is released directly to the lining of the uterus.

23.   Two hormones are used, the first administered daily, through an injection to the muscles near the hip, to stimulate the development of eggs on the ovaries.

24.   Bovine hormones are commonly used in cattle to promote growth and enhance fertility.

25.   Carr said some of the best growth rates came from systems and breeds which did not use hormones.

26.   Hormones are used to prevent brittle bones and treat the symptoms of menopause such as hot flashes, night sweats and vaginal dryness.

27.   Leonard said the undetectable hormones were used as a bridge between courses of steroids.

28.   Researchers hope the hormones can be used to fend off the ravages of aging and disease.

29.   Stanford said women should discuss their medical history with their doctors before deciding whether to use hormones during menopause.

30.   Such hormones are widely used in the United States.