Selenium is a potent antioxidant, especially when combined with vitamin E, and as such supports a strong immune system. Adequate amounts of selenium may help prevent cancer and heart disease, promote tissue elasticity and alleviate symptoms of arthritis. Selenium is also needed by the pancreas for normal functioning. The adult daily supplement range is 100-200 mcg.
Most people are able to get adequate amounts of selenium in their diet.
Very small quantities are required for good health. Selenium is found in soil and the content in food is directly proportional to the soil of where the food is raised. Meats, grains, chicken and dairy products are good dietary sources of selenium. Selenium can be toxic in very high doses. Symptoms of toxicity can be hair loss, nail problems, tooth decay, swelling of fingers, metallic taste in the mouth, and garlicky breath.