Interest in Antioxidants: Why and How?: reactive oxygen species: production, regulation, and essential functions; major dietary antioxidants and their food sources. Antioxidants in Health: oxidative stress in pregnancy; the role of antioxidants in children´s growth and development; adulthood and old age; smoking, oxidative strees, and antioxidant intake; physical exercise. Antioxidants in Various Disease States: coronary heart disease and stroke; diabetes; cancer; antioxidants in neurodegeneration-Truth or Myth?; gastrointestinal disorders; antioxidants in obesity and inflammation; modulation of inmune response by antioxidants; HIV/AIDS. Role of Herbs: role of herbs and spices-In health and longevity and in disease.