Red clover is often taken to relieve symptoms of premenstrual syndrome (PMS). Also, menopause increases a woman's risk for developing osteoporosis (significant bone loss) and some studies suggest that a proprietary extract of red clover isoflavones may slow bone loss and even boost bone mineral density in pre and peri-menopausal women. Red clover may also block enzymes thought to contribute to prostate cancer in men. It has shown a definite limiting effect, however, in the development of benign prostate hyperplasia (BPH), which is a non-cancerous enlargement of the prostate gland. Red clover may help to prevent heart disease in several ways. It has been found to be helpful in quitting smoking.