Maintaining adequate muscle mass is crucial to healthy aging. Numerous diseases as well as deterioration of motor nerves and muscle repair mechanisms cause risks to developing sarcopenia. Sedentary lifestyles coupled with excess caloric intake among senior citizens compound the problem by creating a condition of limited muscle strength overwhelmed with body weight. This book presents biochemical, nutritional, and metabolic implications related to sarcopenia. It provides information on mechanisms regulating age-related loss of muscle mass and function as well as nutritional anti-aging strategies to fight against atrophy and support healthy aging.