Introduction. Free Radicals in Biological Systems. Free Radicals as Mediators of Tissue Injury. Free Radical Biology of Iron. Dietary Prooxidants. Essential Trace Elements in Antioxidant Processes. Vitamins and Related Dietary Antioxidants. Free Radical Pathology and the Genome. The Role of Free Radicals in Cancer and Aging. Free Radicals and Malnutrition. Conclusions. Index.