直到最近还认为单独缺碘总是会导致甲状腺肿和地方性克汀病的发生。然而,最近几年已有若干研究小组报告:尽管饮食中严重缺碘(每日低于25微克),但没有观察到甲状腺肿或地方性克汀病。Roche 氏及其合作者在委内瑞拉 Ventuari 河、Ocamo 河和 Until recently it was also thought that iodine alone alone would always lead to goiter and endemic cretinism. However, several research groups have reported in recent years that no goiter or endemic cretinism was observed in spite of severe iodine deficiency (less than 25 micrograms per day) in the diet. Roche and its collaborators in Venezuela Ventuari River, Ocamo River and