The term vitamin E describes a family of eight antioxidants, four tocopherols, alpha-, beta-, gamma- and delta-, and four tocotrienols (also alpha-, beta-, gamma- and delta-). Alpha-tocopherol is the only form of vitamin E that is actively maintained in the human body and is therefore, the form of vitamin E found in the largest quantities in the blood and tissue (1). Alpha-tocopherol is the form of vitamin E that appears to have the greatest nutritional significance. This volume presents leading-edge research in this important field.