The World Health Organization describes the leading health-related problems in the age group 10 – 19 years to include:
Some young people engage in risky behaviors that affect their health and therefore the majority of health problems are psychosocial. Many young people experience multiple adverse childhood experiences. These behaviors are established as a young person and go on to become the lifestyles of adults leading to chronic health problems. Social, cultural and environmental factors are all important. Young people have specific health problems and developmental needs that differ from those of children or adults: The causes of ill-health in adolescents are mostly psychosocial rather than biological. Young people often engage in health risk behaviors that reflect the processes of adolescent development: experimentation and exploration, including using drugs and alcohol, sexual behavior, and other risk taking that affect their physical and mental health. Adolescent health also encompasses children’s and young people’s sexual and reproductive health (SRH).