This course will draw on the expertise of researchers affiliated with the Centre for Addiction and Mental Health and the University of Toronto, and in some instance special guests from other institutions, to present an overview of issues related to mental health and addictions. Using a population health framework that situates mental health/mental illness and addictions in a complex web of social determinants and societal response, it will examine the epidemiology of these disorders, the philosophies and practices of treatment and prevention services, and the design of service delivery systems, including recent attention to the reform of such systems in Ontario.