Selenium is a chemical element and a non-metal.

Selenium exists in two ways in nature: inorganic selenium and plant-active selenium. Inorganic selenium generally refers to sodium selenite and sodium selenate, which are obtained from by-products of metal mineral deposits; the latter is a combination of selenium and amino acids through biological transformation, and generally exists in the form of selenomethionine.

The role of selenium is relatively broad, with four main functions:

1. Antioxidant effect. Scientific confirmation: It is precisely because of the high antioxidant effect of "selenium" that appropriate supplementation can prevent organ aging and lesions, delay aging, enhance immunity, resist diseases, resist toxic heavy metals, reduce the side effects of radiotherapy and chemotherapy, and prevent and fight cancer.

2. Prevent diabetes. Selenium is the active ingredient that constitutes glutathione peroxidase. It can prevent the oxidative damage of pancreatic beta cells, make them function normally, promote sugar metabolism, reduce blood sugar and urine sugar, and improve the symptoms of diabetic patients.

3. Detoxification and detoxification. Selenium has a strong binding force with metals and can resist the toxicity of cadmium to the kidneys, gonads and central nervous system. Selenium combines with heavy metals such as mercury, lead, tin, and thallium in the body to form a metal-selenoprotein complex for detoxification and detoxification.

4. Prevent and treat liver disease. After 16 years of epidemiological surveys in areas with high incidence of liver cancer, Chinese medical expert Yu Shuyu found that the selenium content in the blood of residents in areas with high incidence of liver cancer was lower than that in areas with low incidence of liver cancer. The incidence of liver cancer is negatively correlated with blood selenium levels. She supplemented selenium for 130,000 residents in Qidong County, Jiangsu Province and confirmed that selenium supplementation can reduce the incidence of liver cancer by 35% and reduce the incidence of liver cancer by 50%.

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