Book excerpt: Canada has long been recognized as a leader in the field of psychiatric epidemiology, the study of the factors affecting mental health in populations. However, there has never been a book dedicated to the study of mental disorder at a population level in Canada. This collection of essays by leading scholars in the discipline uses data from the country's first national survey of mental disorder, the Canadian Community Health Survey of 2005, to fill that gap. Mental Disorder in Canada explores the history of psychiatric epidemiology, evaluates methodological issues, and analyzes the prevalence of several significant mental disorders in the population. The collection also includes essays on stigma, mental disorder and the criminal justice system, and mental health among women, children, workers, and other demographic groups. Focusing specifically on Canadian scholarship, yet wide-reaching in scope, Mental Disorder in Canada is an important contribution to the dissemination and advancement of knowledge on psychiatric epidemiology.