Naturally high levels of estrogen turn off LH production. In the treated animals, the plant extracts similarly reduced LH production, according to the investigators. Herbal remedies have been used for centuries to relieve various gynecological symptoms, including absent periods, painful periods and symptoms of menopause. Vitex, or chaste berry, is a Mediterranean plant traditionally used to relieve menopausal symptoms. Dang gui and ginseng are traditional Chinese remedies for a variety of gynecological problems.
Cohosh is a traditional American Indian cure for menstrual pain and menopausal discomfort.
Black cohosh has been shown to relieve hot flashes in European clinical trials. Dr. Eagon's research is supported by a breast cancer research grant from the U.S. Army.