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Home - Resource Center - Glossary

Glossary

Selenium

Selenium is an essential trace mineral that works as an antioxidant (especially when combined with vitamin E) by scavenging damaging particles in the body known as free radicals. Selenium is necessary for proper immune function and for producing prostaglandins (substances that affect blood pressure and inflammation in the body). Selenium is also necessary for normal growth and proper utilization of iodine in thyroid function. Low levels of selenium may worsen atherosclerosis (plaque buildup in arteries which can lead to heart attack and/or stroke) and can lead to premature aging. Selenium deficiencies have also been linked to certain types of cancer. Many of the benefits of selenium are related to its role in the production glutathione peroxidase, a vital enzyme that is responsible for detoxification in the body. Selenium has also been shown to positively affect mood and may reduce feelings of depression.

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