1817年瑞典化学家Berzelius首先发现元素硒后,人们一直把硒作为有毒并且致癌的元素来研究,直到1957年ShcwazrelsnadFolzt发现硒可以防止维生素E缺乏性肝坏死,弄清了许多国家的羊、猪、牛、马等所流行的白肌病都是由缺硒引起,首次证明硒是人与动物体内必需的微量元素之后,才使人 After the discovery of elemental selenium by Swedish chemist Berzelius in 1817, selenium was studied as a toxic and carcinogenic element until Shcwazrelsnad Folzt discovered in 1957 that selenium prevented vitamin E-deficient hepatic necrosis, clarified that many sheep, pigs, Cattle, horses and other popular white muscle disease are caused by selenium deficiency, for the first time that selenium is essential trace elements in humans and animals before making people