In current clinical practice, oxidative stress (OS) is not assessed and oxidative damage is not targeted by most medical practitioners. The concept of OS is discussed as implicated in a variety of diseases, but not as a biochemical basis of diseases. This book draws attention to antioxidant activities as biochemical basis of diseases. it addresses medical nutrition therapy in the perspective of antioxidant herbs and the role of laboratory approach to optimize outcomes. A major importance of this book is the clinical laboratory point of view. It highlights evidence-based principle of oxidative stress management and monitoring by laboratory methods that are readily applicable and available in clinical practice. It is hoped that alternative medicine practitioners, biomedical scientists, clinicians, nutrition and dietitians, pathologists and researchers will find this book handy.