摘要：To investigate the prevalence of overweight and obesity based on Body Mass Index (BMI) values among children in Tehran. Cross-sectional survey of a randomized sample of school aged children in Tehran. A total of 3104 boys and girls in 3 aged groups with mean age 6, 8 and 10 years. The data consisted of parents-reported measures of height and weight that were obtained from questionnaires, and then BMI [weight (kg) / height (m)2] was calculated. The prevalence of overweight and obesity was higher than expected as related to recent Centers for Diseases Control and Prevention (CDC) growth charts in comparison to a recent International Obesity Task Force (IOTF) approach. These differences were higher among Iranian girls than boys. While obesity prevalence might not be important as a definition of IOTF and CDC, but rapid increases of obesity in recent years are potentially dangerous. International authorities should accelerate the efforts regarding construction a global BMI reference data, based on obesity definition in developing countries .
