BOSTON — Adolescent girls with polycystic ovary morphology have severe hyperinsulinemia after glucose stimulation, and the degree of insulin elevation is correlated with obesity, a study has shown. The findings emphasize the role of obesity and hyperinsulinemia in the pathophysiology of polycystic ovary syndrome, Dr. Marianna I. Bak said at the Fifth Annual World Congress on the Insulin Resistance Syndrome.