Effect of weight loss on menstrual function in adolescents with polycystic ovary syndrome.

Study Objective: To compare the effects of a hypocaloric low-fat diet with those of a very low carbohydrate diet on body mass index (BMI), waist circumference (WC), and menstrual function in overweight adolescent females with polycystic ovary syndrome (PCOS).

Design: Randomized pilot trial of two diets in a prospective, 12-week study.

Setting: A hospital-based, academic adolescent medicine division.

Lipid and insulin levels in obese children: changes with age and puberty.

Objective: The goal was to describe the lipid profile and insulin changes seen in obese children and adolescents at different stages of puberty.

Research Methods And Procedures: A cross-sectional study was conducted by chart review of 181 obese (BMI > 95th) children and adolescents 5 to 17 years of age, who were referred to the Center for Atherosclerosis Prevention for cardiovascular risk reduction from January 2003 through December 2003.

Results: Eighty (44.