Extensively revised and updated to reflect the current state of knowledge in the study of aging, the third edition of the bestselling Physiological Basis of Aging and Geriatrics provides an even more complete profile of the aging of individuals and populations. It includes aspects of demographic, comparative, and differential aging together with a discussion of the several theories of aging. It shows how body functions change with aging, describes how both genetic and environmental factors influence aging-related changes, and addresses some of the clinical consequences of these changes for health and longevity.Divided into three main sections, the book first provides a broad and solid background in basic processes of biogerontology. Then it presents a survey of the aging of body systems, focusing on maintenance of optimal function and ability to adapt to environmental demands. Finally, it provides a synopsis of pharmacologic, nutritional, and physical exercise guidelines for preserving physical and mental health into old age.This book collects up-to-date information from internationally renowned experts in various biologic fields using physiology as the unifying concept. Illustrated with numerous tables and graphs, Physiological Basis of Aging and Geriatrics, Third Edition focuses on the established facts of physiological aging to provide an essential reference book for a wide spectrum of readers with different levels of biological and educational backgrounds.