Quick guide to Selenium
Read the full guide
- the function of the antioxidant enzyme, glutathione peroxidase, which protects against damage to cells
- healthy immune and cardiovascular systems
- hormone production
Absorption and metabolism
Organic selenium is absorbed more efficiently than inorganic forms.
Deficiency
Selenium deficiency may contribute to cancer, heart disease, arthritis, cataracts, autoimmune diseases and birth defects.
Sources
Good sources include organ meats and seafood. The selenium content of food varies with the location in which the food is grown. The table on page 299 can be used as a guide.
Daily recommended dietary intakes
- Men - 70 mcg
- Women - 55 mcg
- Pregnancy - 65 mcg
- Lactation - 75 mcg
Toxic effects of excess intake
Toxic effects include fatigue, hair loss, nail problems, bad breath and nervous system problems.
Therapeutic uses of supplements
Selenium supplements may be useful in preventing heart disease, cancer and cataracts, and in the treatment of asthma and rheumatoid arthritis.
Interactions
Selenium and vitamin E work better together than individually.