This presentation discusses adolescence and adolescent health issues in Nepal. It defines adolescence as the period between ages 10-19 according to WHO, and 12-20 in some societies. Around 1.2 billion people worldwide are adolescents. Adolescents face health risks from injuries, mental health issues, violence, HIV/AIDS, alcohol, drugs, nutrition deficiencies, and more. Major causes of adolescent death include road injuries, suicide, violence, and HIV/AIDS. Adolescent vulnerabilities are high in Nepal, especially among girls, those from remote areas, and lower castes, due to factors like early marriage, psychosocial problems, and lack of education.