Selenium is an essential trace element for human beings and animals, which is related to long-term health. It is a strong antioxidant, which can reduce toxic peroxide to harmless substances, decompose hydrogen peroxide (H2O2), protect cells and tissues from peroxide damage, and has a special protective effect on cell membranes and organelles (mitochondria, microsomes, lysosomes).

Vitamin E is a strong antioxidant, and the effect of selenium is not only similar to that of vitamin E, but also synergistic. Both of them can * * * resist the harmful effects of "free radicals" on the body. Therefore, both selenium and vitamin E have anti-degenerative diseases and anti-aging effects. The lack of selenium in the food of the elderly will lead to the metabolic disorder of the most important electrolytes in the body, such as sodium, potassium and calcium, and the increase of fat peroxide in the body, which will lead to various diseases.