Selenium in diet

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Selenium - antioxidant

Overview

Food Sources

Recommendations

Side Effects

Selenium in diet

Definition:

Selenium is an essential trace element. It is an integral part of enzymes, which are critical for control of the numerous chemical reactions involved in brain and body functions.

Alternative Names:

Diet - selenium

Function:

Selenium has a variety of functions. The main one is its role as an antioxidant in the enzyme selenium-glutathione-peroxidase. This enzyme neutralizes hydrogen peroxide, which is produced by some cell processes and would otherwise damage cell membranes.

Selenium also seems to stimulate antibody formation in response to vaccines. It also may provide protection from the toxic effects of heavy metals and other substances.

Selenium may assist in the synthesis of protein, in growth and development, and in fertility, especially in men. It has been shown to improve the production of sperm and sperm motility.

Review Date: 10/27/2004
Reviewed By: Kevin Pho, M.D., Attending, Internal Medicine, Boston VA Medical Center, Boston, MA. Review provided by VeriMed Healthcare Network.

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