The prevalence of overweight and obesity (OWOB) has stabilized in some countries, but a portion of children with high body mass index (BMI) may have become heavier. This study aimed to describe the distributions of BMI and the point prevalence of OWOB in Norwegian adolescents in 2002 and 2017. | Sex-related change in BMI of 15 to 16 year-old Norwegian girls in cross-sectional studies in 2002 and 2017