(1) Selenium has antioxidant effect, and it is easy to age without selenium. Selenium can activate important substances in human body's own antioxidant system and control and eliminate oxidative damage, so selenium has the functions of preventing and treating diseases and delaying aging. The antioxidant effect of selenium is 500 times higher than that of vitamin E. Chinese scientists have found that the selenium level of centenarians is 3-6 times that of ordinary people. (2) Protect and repair the antioxidants produced by cell selenium in the whole cytoplasm, play the role of elimination and reduction, protect the cell membrane structure from the destruction of oxides, and protect cells, thus protecting important organs such as heart, liver, kidney and lung. (3) Selenium can enhance human immunity, while selenium deficiency can reduce human immunity. Selenium can enhance the immune system's ability to recognize viruses, foreign bodies and diseases in the body, improve the phagocytosis and sterilization ability of immune cells, and fundamentally improve the human body's resistance to diseases. (4) Selenium has the functions of detoxification, antivirus, anti-pollution and antagonism to heavy metals. Selenium deficiency is prone to lead, arsenic, cadmium and other heavy metal poisoning. Selenium, as a nonmetallic ion with negative charge, can combine with harmful metal ions with positive charge in human body, discharge harmful metal ions such as lead, aluminum, mercury, cadmium and thallium that can induce cancer, and timely remove wastes, garbage and toxins in human body, and reduce the toxic and side effects of chemical carcinogens, pesticides and indirect carcinogens. In this regard, the role of selenium has won the reputation of "natural antidote". ⑤ Selenium has anticancer effect. Selenium deficiency is prone to liver cancer, lung cancer, gastric cancer, esophageal cancer, renal cancer, prostate cancer, bladder cancer, cervical cancer and leukemia. Selenium can inhibit the carcinogenesis of many carcinogens, is the killer of cancer cells, and can form an internal environment in the body to inhibit the division and proliferation of cancer cells. After cancer surgery, it can obviously control the deterioration of the disease, reduce the side effects of radiotherapy and chemotherapy, and accelerate recovery. ⑥ Selenium can inhibit cardiovascular diseases. Selenium deficiency can lead to cardiovascular diseases, Keshan disease, Kaschin-Beck disease, hypertension, sudden infant death syndrome, hemolytic anemia, liver necrosis, cardiomyopathy, pancreatitis, muscular dystrophy, multiple sclerosis and myopathy. Selenium can reduce blood viscosity, blood lipid, cholesterol, triglyceride and low density lipoprotein levels, reduce thrombosis and protect myocardium. Selenium is known as the patron saint of the heart. 7 Selenium can protect the liver. The liver in the human body is a selenium bank, and the selenium concentration in the liver is obviously higher than that in other tissues and organs. A large number of investigations by scientific and technical personnel show that selenium in patients with liver injury such as alcoholic liver disease, hepatitis, liver cirrhosis and ascites is significantly lower than that in normal people. Proper selenium supplementation can eventually eliminate about 90% of hepatitis B virus, and protecting the liver is one of the functions of selenium. (8) Helps to restore islet function. Selenium deficiency can cause primary damage to the insulin synthesis and secretion function of some islet cells. Selenium supplementation can protect islets and obviously inhibit diabetic complications. Pet-name ruby selenium can protect eyes, improve eyesight selenium can improve eyesight and prevent and treat eye diseases. If people's eyes lack selenium intake for a long time, they will have decreased vision and a variety of eye diseases, such as cataract, retinopathy, pseudomyopia, night blindness and so on. Attending selenium can enhance reproductive function. Selenium deficiency can easily lead to the obstruction of * * * process, the decrease of * * * activity, the deformation of the middle section, the decrease of pregnancy rate and the increase of the incidence of metritis. Selenium is gold in human body. Selenium is one of the components of mitochondrial outer membrane selenoprotein; The normal occurrence of * * depends on the existence of selenium, and this effect of selenium is mainly manifested by affecting selenoprotein. The occurrence of * * * requires high selenium content in testis. Too high or too low selenium content will affect * *, leading to the decline of male reproductive capacity. Testicular tissue has a great affinity for selenium: selenium has a specific role in the formation and development of * * *. Adding proper amount of selenium can reduce the damage to some extent and improve the quality of * * *. ? Selenium can improve the oxygen carrying capacity of red blood cells, strengthen the brain and resist fatigue. Selenium protects red blood cells in blood, prevents hemoglobin in red blood cells from being oxidized, enhances their oxygen carrying capacity, and enables each cell to maintain normal function. Therefore, it also solves the problem of brain hypoxia of mental workers and reduces the phenomenon of depression and fatigue. Disclaimer: The above content comes from the Internet, and the copyright belongs to the original author. If there is any infringement of your original copyright, please let us know and we will delete the relevant content as soon as possible.