锌是机体内必需的微量元素之一。近年来的临床观察和实验研究表明,锌与机体的代谢及某些疾病的发生发展关系极为密切。因此,锌在医学中逐渐被重视。一、锌的代谢锌普遍存在于食物中,动物性食物比植物性食物含锌量多,尤以牡蛎含锌最为丰富,人奶、鱼、各种肉食、肝以及花生和豆类,均是锌的良好来源。正常饮食情况下体内不易缺乏锌。成人每天需锌量约为16毫克;4个月以内小儿为3毫克/日,5～12个月为5 Zinc is one of the necessary trace elements in the body. In recent years, clinical observation and experimental studies have shown that zinc and the body’s metabolism and the occurrence of certain diseases are closely related. Therefore, zinc is gradually valued in medicine. First, the zinc metabolism of zinc is widespread in food, animal foods contain more zinc than plant foods, especially oysters are the most abundant zinc, milk, fish, all kinds of meat, liver and peanuts and beans are Good source of zinc. Under normal diet is not easy to lack of zinc in the body. Adults need about 16 mg zinc per day; 4 months less than 3 mg in children, 5 to 12 months for the 5