Effect of body mass index trajectory on hypertension among children and adolescents aged 5-18 years: a retrospective cohort study.

Five body mass index trajectories from ages 5­18 years were determined using the LCGMM method, which labeled as the slow increasing group, overweight and obesity (OW/OB) group, normal decreasing group, stable normal group, and fast-increasing group.Different BMI trajectories in children and adolescents aged 5­18 years are differentially associated with the development of hypertension.Increased BMI levels in children and adolescents increase the risk of hypertension. Moreover, even within the normal BMI range, a modest growth might raise the risk of high-normal BP.