This book is a collaborative effort for progressing towards the prevention and treatment of chronic degenerative diseases. It responds to the urge to find, in a sole document, the impact of oxidative stress at distinct levels, as well as treatment with antioxidants to react and decrease the damage. The book includes two sections namely, aging and therapy- a role for antioxidants. Researchers from across the world have contributed in it. The book is intended for health professionals and those interested in combating stress.