Post Views: 496 Selenium is a non-metallic element that is essential for human health. Approximately 30% of selenium is present in the liver, 30% in muscle, 15% in the kidney, and 10% in the blood plasma. In the body, it is bound to selenium-binding proteins.  Selenium plays a key role in the immune system functioning and the progression of HIV to AIDS. Why is Selenium essential for the human body? Selenium functions in the human body through seleno-proteins, most of which are oxidant-defense enzymes. Other selenium-associated proteins regulate the action of thyroid hormones, Vitamin C, and other molecules. Out of the 35 seleno-proteins present in the body, 3 play an…