Li Sumei, Zheng Qingsi, Xu Jing, Gorstein Jonathan, Wang Haiyan, Dong Huijie
National Training and Technical Support Team for Iodine Deficiency Disorders, Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, China.
Asia Pac J Clin Nutr. 2011;20(4):501-6.
Using national monitoring data collected between 1995 and 2009, this paper describes the change in trend with regard to the coverage of qualified iodized household salt and iodine status of the population in China since the implementation of universal salt iodization. The review indicates that the iodine content in edible salt increased from 16.2 mg/kg in 1995 to 42.3 mg/kg in 1999, then declined to 30.8 mg/kg in 2005 and has retained this level through the most recent data collection cycle, which is considered sufficient to achieve optimal iodine status. However, the median urinary iodine excretion level for children aged 8-10 at the national level has been consistently classified as "excessive iodine intake" since 1997, suggesting that although three adjustments on the standard of iodine content in edible salt have been made, the current content of salt iodization is still on the high side. The iodine content in edible salt could be lowered, and possibly adapted to local specific conditions such as water iodine content and the average daily intake of salt among the population in order to achieve a balance between preventing deficiency and reducing the risk of excessive intake.
利用1995年至2009年期间收集的全国监测数据，本文描述了自实施全民食盐加碘以来，中国合格碘盐覆盖率和人群碘营养状况的趋势变化。该综述表明，食用盐中的碘含量从1995年的16.2毫克/千克增加到1999年的42.3毫克/千克，随后在2005年降至30.8毫克/千克，并在最近的数据收集周期中保持这一水平，这一水平被认为足以实现最佳碘营养状况。然而，自1997年以来，全国8至10岁儿童的尿碘排泄中位数水平一直被归类为“碘摄入过量”，这表明尽管对食用盐碘含量标准进行了三次调整，但目前的加碘盐含量仍然偏高。可以降低食用盐中的碘含量，并可能根据当地的具体情况进行调整，如水碘含量和人群的平均每日食盐摄入量，以在预防碘缺乏和降低碘摄入过量风险之间取得平衡。
