Important antioxidant, important to immune function, Necessary for DNA repair, Essential for healthy foetal growth, Involved in the detoxification of alcohol, some drugs, and pollutants, including smoke, Involved in male potency & libido, Improves liver function, Necessary for proper thyroid function, Protects against heart disease and circulatory problems, Maintains healthy eyes, nails and hair.

Brazil nuts, Wheat germ, Wholemeal bread, Barley, Shrimp, Oats, Oysters, Cod, Liver, Brown rice, Lamb, Turnips, Garlic, Pork, Mushrooms, Chicken, Pulses
Cataracts, Increased susceptibility to infection, Heart problems, Poor growth in children, Reduced male fertility, Muscle inflammation, Hair loss
Smokers
Women on contraceptive pill
The elderly
Those who have diets high in refined food
US RDA: 50-100mcg

EU RDA: 10-75mcg