Selenium

Essential for

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.

Interactions

Selenium and vitamin E work better together than individually.

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.