This document discusses aging, health, and complementary and alternative medicine (CAM). It defines terms like chronological age, physiological age, and life expectancy. It states that lifestyle behaviors have a greater impact on health and longevity than genes. The document also discusses three categories of CAM therapies - natural products, mind-body medicine, and manipulative and body-based methods. Finally, it notes that almost $50 billion is spent out-of-pocket each year on CAM treatments in the United States.