In your diet - meat, tuna, whole grains.

Uses - treating under-active thyroid, osteoarthritis, rheumatoid arthritis (RA), an eye disease called macular degeneration, hay fever, infertility, cataracts, gray hair, abnormal pap smears, chronic fatigue syndrome (CFS), mood disorders, arsenic poisoning, and preventing miscarriage.Selenium Deficiency can lead to pain in joints and muscles, unhealthy hair, white spots on nails.