Aryanpur M, et al. - Researchers, for the first time, evaluated the impact of active smoking or passive exposure to cigarette smoke on the risk of developing hypertension in children and adolescents. In the present meta-analysis, 29 studies were included incorporating 192,067 children and adolescents. Investigators found that the development of hypertension in children and adolescents was not associated with active and passive cigarette smoking. Passive cigarette smoke in children and adolescents, however, was associated with higher levels of systolic blood pressure.