The causes of psychosis with Dr. Kwame McKenzie

The cause2 of psychosis are unclear, but several factors appear to be involved, including genetic and environmental factors. In this video series, Dr. Kwame McKenzie, a psychiatrist at the Centre for Addiction and Mental Health in Toronto, explains the research in these areas. He describes what is known about the general causes of psychosis, as well as the relationships between psychosis and cannabis, genetics, stress and urban settings.