Societies in transition are often faced with new settings and/or new diseases that require a response in order for the affected group to thrive or survive. A lack of effective response by a transitional population to a new pathogen can lead to the group's disintegration. A stark example of this, historically, is the decline of Native American civilizations with the arrival of European colonists in the sixteenth and seventeenth centuries. The transitional response mechanism has been a neglected topic in anthropology until the publication of this book. In a broad selection of nineteen essays by distinguished researchers, the epidemiology and health status of prehistoric, historical, and present day populations in transition are thoroughly explored. Different models--biomedical, ethnomedical, ecological, and politicoeconomic--are used to illustrate the effects of transition on the health of human populations throughout the world. Swedlund and Armelagos have compiled and arranged these essays into three parts: genetic and evolutionary perspectives; infectious disease and nutrition in temporal perspective; and social epidemiology. Some of the topics studied in the essays include: disease and evolution in Amerindian populations; health and disease in prehistoric transitional peoples; mortality and morbidity consequences of nutritional variation in early child growth; and social support and mortality in post-transition populations. This insightful book will provide a vital perspective for medical anthropologists, development specialists, epidemiologists, and health professionals, as well as for graduate students in related course areas.