硒是人体三大抗氧化营养素之一,也是人体必需的微量元素。硒具有抗氧化、消除自由基、增强机体免疫等多种生理功能,同时在重金属解毒、保护心肌和心血管以及抗癌等方面也起到极为重要的作用。适当增加硒的摄入量,对维持身体健康、预防衰老、防治某些疾病的发生都具有重要意义。硒对机体具有双重作用,过量的摄人和补充硒可以导致硒中毒发生,应给与重视。 Selenium is one of the three major antioxidant nutrients in the human body and is also an essential trace element for the human body. Selenium has a variety of physiological functions such as anti-oxidation, elimination of free radicals and enhancement of immunity to the body. It also plays an extremely important role in detoxification of heavy metals, protection of myocardium and cardiovascular, and cancer prevention. Proper increase selenium intake, to maintain good health, prevent aging, prevention and treatment of certain diseases are of great significance. Selenium on the body has a dual role, excessive intake and selenium can lead to selenium poisoning, should be given attention.