人们早已注意到碘和甲状腺激素可影响听力的发育.对这一问题的认识大体上经历了三个阶段。一、人们震惊阶段(13-16世纪):自13世纪以来,欧洲很多旅游探险家在一些偏僻的山区发现既有甲状腺肿又有聋哑的傻孩子,当时人们对这一问题困惑不解,感到十分震惊;二、临床描述阶段(17-19 It has long been noted that iodine and thyroid hormones can affect the development of hearing, and the understanding of this issue has generally gone through three stages. First, the people shock phase (13-16 century): Since the 13th century, many European tourism explorers in some remote mountainous areas found both goiter and deaf-mute silly boy, when people were puzzled by this issue, Feel very shocked; Second, the clinical description of the stage (17-19