This module explores the health and welfare of adolescents and youth with particular attention on adolescent pregnancy, substance abuse, violence prevention, and mental health promotion and the dynamic factors affecting the health and well-being of young people around the world, and how important it is for individuals, communities and nations that we improve the health and life chances of this important population groups. At the end of the module candidates will be able to apply knowledge of adolescent growth and development, positive youth development, and cultural and ethical considerations of youth to design, to implement, and to evaluate adolescent health-related research, programs, and policies.