Antioxidants are molecules that check the chemical reactions that are caused by free radicals in the human body. They play a significant role in medical science. Antioxidants help in the prevention of cancer by reducing cell damage. They also help to decrease the effects of aging as well as minimize risks of Asperger's syndrome, Alzheimer's disease and Parkinson's disease. This book on antioxidants traces the progress of this field and highlights some of its key concepts and applications. Through this book, the readers would gain knowledge that would broaden their perspective about antioxidants. It will serve as a valuable source of reference for graduate and post graduate students.