- 期刊
Iodine Excess or Not: Analysis on the Necessity of Reducing the Iodine Content in Edible Salt Based on the National Monitoring Results
碘过量或没有：基于国民监测结果分析食用盐降低碘含量的必要性
摘要
本文利用1995年至2009年全国监测搜集的数据，描述了自普及食盐加碘（USI）以来，中国居民合格碘盐覆盖率和人群碘营养状态的变化趋势。文章指出，中国居民食盐中碘的浓度1995年、1999年和2005年分别为16.2 mg/kg、42.3mg/kg和30.8 mg/kg，直至最近仍维持2005年的水平，这一水平被认为能够获得充足的碘营养状态。然而，全国8-10岁儿童的尿碘水平从1997年起一直在碘摄入过量的水平，表明虽然食盐中碘的浓度经过3次调整，但当前的浓度依然偏高。食盐中碘的浓度仍有下调的空间，并要适合当地的具体条件，例如水碘含量和人群平均每日食盐摄入量，以便获得防治碘缺乏和降低碘摄入过量风险的平衡。
並列摘要
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.