Selenium is an essential trace element for human body. Selenium participates in the synthesis of various selenium-containing enzymes and selenium-containing protein in human body. Among them, glutathione peroxidase catalyzes the conversion of hydroperoxide or lipid peroxide into water or various alcohols in organisms, eliminating the attack of free radicals on biofilm and protecting biofilm from oxidative damage; Selenium participates in the formation of iodothyronine deiodinase.
The function of selenium can improve human immunity, promote the proliferation of lymphocytes and the synthesis of antibodies and immunoglobulins. Selenium has obvious inhibitory and protective effects on colon cancer, skin cancer, liver cancer, breast cancer and other cancers, and its intermediate metabolite methyl enol in the body has strong anticancer activity. Nutrients such as selenium, vitamin E, allicin, linoleic acid, germanium and zinc have synergistic antioxidant effect and increase antioxidant activity. At the same time, selenium can reduce and alleviate the toxicity of heavy metals.
Selenium deficiency in human body can cause many diseases, the most typical of which is Keshan disease, which is endemic in Keshan County, Heilongjiang Province. Kaschin-Beck disease, cancer, cardiovascular disease, cataract, cystic fibrosis, hypertension, goiter, immune deficiency, lymphocytic anemia, macular degeneration, muscular dystrophy, ulcerative colitis, arthritis and human aging are all directly related to selenium deficiency.
Dietary supplement: foods rich in selenium are: selenium-enriched rice, selenium-enriched wheat, seafood, mushrooms, eggs, garlic, ginkgo and so on. ?
When the body is deficient in selenium and symptoms appear at the same time, it is recommended to take selenium supplement products, such as selenium yeast tablets. The organic selenium contained in selenium yeast tablets is extracted from natural selenium yeast and refined by microbial synthesis and transformation. It is a pure natural product. It contains a variety of organic selenium, mainly L- selenomethionine, but it avoids the strong yeast smell of pure L- selenomethionine, so it is more suitable as a dietary supplement. It has the characteristics of high bioavailability and rich nutrition. The recommended doses of selenium for different populations in China are 50 micrograms per day for preventing nutritional deficiency, 0 micrograms per day for sub-health, 200 micrograms per day for preventing major chronic diseases such as cancer, and more than 200 micrograms per day during treatment.