By Lisa Rapaport (Reuters Health) – Women who suffer from a leading cause of infertility may increase their odds of conception if they exercise and lose weight, a U.S. study suggests. Researchers compared pregnancy outcomes for 150 women with polycystic ovary syndrome (PCOS), a condition that occurs when the female body makes higher than normal amounts of testosterone and androgens, sex hormones associated with male traits. Women with PCOS often experience irregular menstrual cycles, weight gain, excess hair on the face and body and infertility.