This publication was developed through an international consultation process led by UNESCO in partnership with the United Nations Office on Drugs and Crime (UNODC) and the World Health Organization (WHO), members of the UN Interagency Task Force on the Prevention and Control of Noncommunicable Di

Many unhealthy behaviors often begin during adolescence and represent major public health challenges. Substance abuse has a major impact on individuals, families, and communities, as its effects are cumulative, contributing to costly social, physical, and mental health problems.