湖南省是全国碘缺乏病（ＩＤＤ）严重流行的省份之一。全省１２２个县（市、区）均为ＩＤＤ流行区，受威胁人口６５００万。从１９８０年开始向病区供应１／４万碘化钾食盐，居民碘营养水平得到改善，１９９１年全省地方性甲状腺肿患病率达到部颁原定基本控制标准［１］。... Hunan Province is one of the provinces where iodine deficiency disorders (IDD) are prevalent in the country. The 122 counties (cities and districts) in the province are all endemic areas of IDD, with a total population of 65 million threatened. From 1980 onwards, 1/40 000 potassium iodide salt was supplied to the ward. The iodine nutrition of the residents was improved. In 1991, the prevalence of endemic goiter in the province reached the basic control standard promulgated by the ministry. ...