碘是一种重要营养素,也是一种人体必需的微量元素,缺碘会对人体造成不同程度的损害,导致碘缺乏病的发生乃至残疾。碘缺乏病是世界上分布最广泛、侵犯人群最多的一种地方病。碘缺乏最大危害是对智力的损伤,这种智力残障对儿童学习能力、人们健康、生活质量和社会经济造成直接的负面影响。因 Iodine is an important nutrient, but also a trace element essential to the human body, iodine deficiency will cause varying degrees of damage to the human body, resulting in the occurrence of iodine deficiency disorders and even disability. Iodine deficiency disease is the most widespread and most endemic endemic disease in the world. The greatest harm to iodine deficiency is the damage to intelligence, which has a direct negative impact on children’s learning ability, people’s health, quality of life and social economy. because