Weight loss does not improve fertility

HERSHEY, Pa. Losing weight does not lead to improved fertility in women, but does improve sexual function, according to Penn State College of Medicine researchers. "Obesity in women has been linked to lack of ovulation and thus infertility," said Richard Legro, M.D., professor of obstetrics and gynecology. "Obesity, especially centered in the abdomen, among infertile women seeking pregnancy is also associated with poor response to ovulation induction and with decreased pregnancy rates." Obese women are often told to lose weight prior to conception, so researchers looked at changes in reproductive function after gastric bypass surgery. One way to learn more about the effects of obesity on reproduction is to study women after bariatric surgery, since a large amount of weight is lost in a relatively short period of time. Each person can be studied while obese and after surgery to detect changes. Researchers report their findings in the Journal of Clinical Endocrinology and Metabolism.