Risk factors for impaired glucose tolerance in obese children and adolescents.

Aim: To investigate which obese children have an increased risk for impaired glucose tolerance (IGT), a risk factor for later diabetes.

Methods: We studied 169 European untreated obese children and adolescents with normal glucose tolerance at baseline. Waist circumference, fasting glucose, lipids, blood pressure, pubertal stage, 2 h glucose in oral glucose tolerance test (oGTT), and HbA1c were determined at baseline and 1 year later.