The only known function of iodine is that it aids in the formation of thyroid hormones, which help regulate cell activities. It is found mainly in clams, lobsters, shellfish and seafood, plants grown near the sea and foods with iodine added (iodised) salt. Selenium is the major mineral antioxidant and is required for many processes in the body. Vitamin E and selenium reinforce one another and can make up for one another if one is deficient. Selenium works well to help sun-damaged skin. Research also shows it can possibly help prevent viruses attacking the heart and lowers the risk of many cancers. Selenium is found in shellfish and meat as well as whole grains, but soils are often deficient in selenium, and the sulphur content in many fertilisers can also inhibit plant absorption.Selenium should be taken every day as an aid to fight oxidative free radicals that cause premature aging and stress. Low levels of selenium are also associated with mood disorders, degenerative diseases, thyroid problems, psychiatric disorders, poor immune functions and skin conditions.Copper helps promote bone growth and maintains the health of nerve tissue. Iron, copper and cobalt work closely together in the production and maturation of red blood cells. It is found in beef, liver, seafood, nuts, dry roasted cashews, dried beans and sunflower seeds.