Many people may be unfamiliar with selenium, a trace element required by the human body, but this does not affect the value of selenium for the human body, if the body is deficient in selenium will lead to a variety of diseases. Therefore, daily selenium supplementation can not be ignored. The benefits of daily selenium supplementation are as follows: First, the first benefit of selenium supplementation is the antioxidant effect. The human body in the process of metabolism, will produce a lot of harmful substances, these harmful substances are lipid peroxides, also called “free radicals”. Selenium has strong oxidizing properties, selenium can improve the body’s antioxidant capacity, timely removal of harmful free radicals in the body, has the effect of slowing down the aging process. Second, the second benefit of selenium supplementation is that it can improve the immune system. Selenium is a strong immunomodulator, selenium supplementation, can enhance the body’s immune function and reduce the risk of infection by viruses. If the body has a disease, selenium supplementation can also stop the aggravation of the disease, alleviate the symptoms of discomfort and help the body recover. Third, the third benefit of selenium supplementation is mainly for men, which can improve sperm quality and reduce urinary tract diseases. Selenium is an important nutrient for sperm production and metabolism, the lack of selenium in men’s bodies can lead to spermatozoa, low sperm vitality, sperm malformation, reduced fertility, etc., and low immunity is prone to inflammatory diseases such as prostatitis. Fourth, the fourth benefit of selenium supplementation is to prevent and fight cancer. Selenium is known by scientists as the “king of cancer prevention” in trace elements, selenium can enhance immunity, inhibit the growth and spread of cancer cells, reduce the side effects of radiotherapy, the appropriate supplementation of selenium can also reduce the incidence of cancer. Fifth, the fifth benefit of selenium supplementation is to antagonize heavy metals. The human body is prone to lead, arsenic, cadmium and other heavy metal poisoning, the chemical industry and other people often exposed to heavy metals selenium supplementation can reduce the chances of heavy metal poisoning. Although selenium supplementation has so many benefits, but it does not mean that the more supplementation the better. It is necessary to supplement selenium properly to really benefit the health of the body. So how much supplementation is the most appropriate? You can refer to the “Nutrient Supplement Declaration and Review Regulations (for Trial Implementation)” promulgated by the state, which stipulates that the minimum daily intake of selenium is 15μg/day and the maximum is 100μg/day.