Taking its title from the second 50 years of the human life span of about 100 years, this book presents wide-ranging and practical recommendations for health care providers, policymakers, and other sectors of society. These recommendations range from setting new national policies to changing the way elderly patients are interviewed in the doctor's office and from what exercises older persons should do to how city planners should design our urban environment. The bulk of this volume presents the latest research on 13 major health threats to the elderly, covering prevalence, impact on the older person's life, cost, and intervention. In addition, the authors provide a detailed analysis of why older people often do not receive the benefit of prevention programs.