The book deals with basic cellular and molecular mechanisms associated with aging. It comprehensively describes the important genetic, epigenetic, biochemical and metabolic regulations during aging, as well as some important age-related diseases.The book is divided into four major sections for easy understanding. It takes the readers through the various aspects of aging in a story-like manner. Certain interventions for healthy aging such as dietary restriction, regular exercise and maintaining a balanced and peaceful life-style are also suggested by the experts. The book would be a companion for both beginners, as well as established researchers in the field. It would be useful for science education, research, clinical approach and policy making.