The trace element selenium is an essential micronutrient that is required for the biosynthesis of selenocysteine-containing selenoproteins. Most of the known selenoproteins are expressed in the ...

Selenium is an essential trace element that is contained in various proteins and has both nutritional and potentially toxic properties. Selenium mainly exists as selenocysteine (Sec) and ...

High-dose supplementation with both the trace element selenium and vitamin E increase the risk of high-grade prostate cancer. But importantly, this risk depends upon a man’s selenium status before ...