Background and objective: Health literacy includes the capacity to understand and act on messages which is the center of critical judgments and decisions not only within the health care environments but also about health issues. The relationship between health literacy of adolescents and body mass index has been less studied. Therefore, the present study examines the relationship between health literacy and BMI among adolescents. Methods: This cross-sectional and descriptive-analytical study conducted on 400 male and female students studying in the second period of high schools, who were selected by multistage random sampling. Data were collected using questionnaire containing demographic characteristics, health literacy (questionnaire of H...