铅中毒已成为常见的公共卫生问题,特别是儿童铅中毒可影响生长发育、行为障碍、多器官损害,严重威胁儿童健康。近年来,有研究发现,钙与铅在肠道吸收存在竞争性抑制,合理补钙能有效地防治儿童铅中毒。铅是嗜神经和嗜胎盘毒物,同时又是产生多系统、多器官损伤的重金属毒物,已成为 Lead poisoning has become a common public health problem, especially children lead poisoning can affect growth and development, behavioral disorders, multiple organ damage, a serious threat to children’s health. In recent years, studies have found that calcium and lead in the intestinal absorption of competitive inhibition, reasonable calcium can effectively prevent children’s lead poisoning. Lead is a neurotropic and placental toxin, and at the same time it is a heavy metal poison that produces multiple systems and multiple organ damage. It has become