Selenium

What is Selenium?

Selenium is a mineral which is needed by the body to activate the antioxidant enzyme glutathione peroxidase, which is believed to help protect the body from cancer. It is also needed to activate thyroid hormones.

Selenium is found mainly in plants, and is most common in foods grown or raised in a selenium rich environment.
Selenium enhances the antioxidant effects of Vitamin E.
Most people do not get enough selenium in their diets. However, intense deficiencies are rare.
Recent studies suggest that selenium supplementation can drastically reduce the chance of death from cancer.
Selenium deficiency can greatly increase the risk of asthma. In studies, it has been shown to cause clinical improvement, though lung function tests do not appear to show the same results.
Selenium has been shown to reduce the risk of heart disease in general. Further research is still needed, however; ask your doctor for his recommendation.
Selenium levels are often low in HIV patients. Supplements have been associated with fewer infections, improved appetite, and better intestinal function in HIV-infected individuals.

Since oxidative damage of the eye can cause macular degeneration, taking antioxidants may lower the disease's occurrence. People with high levels of Vitamin C, Vitamin E, and Selenium appear to have a 70% lower risk of developing macular degeneration.

Since free radical damage has been tracked in the development of retinopathy, antioxidants may be helpful in the prevention of this disease. Vitamin C, Vitamin E, and Selenium have all been shown to help improve the effects of retinopathy.

Natural sources for Selenium:

Brazil Nuts, Seafood, Whole Grains, Yeast.

Preferred Form:

Selenomethionine.

Selenium is useful in treating:

Asthma, atherosclerosis, HIV Support, macular degeneration, retinopathy.

Recommended dosage for Selenium:

100 mcg to 200 mcg daily.

Important Selenium Note:

High doses (1000 mcg or more) may cause skin problems or upset stomach.