2012年北京市居民碘营养状况与食盐供碘量关系的初步分析

Analysis of iodine nutritional status and iodine salt supply among residents in Beijing, 2012

目的 了解北京市居民碘营养以及食盐含碘量情况,为制订碘缺乏病防治策略提供依据.方法 2012年在北京市选择朝阳区与大兴区,每个区分别调查120户家庭,收集360名家庭成员的24 h尿液,计算总尿量,并检测尿碘;收集家庭食用盐盐样检测盐碘;同时调查当天家庭食盐使用情况,计算人均日碘摄入量及盐碘对人体碘摄入的贡献率.结果 8～ 10岁儿童、成年女性、成年男性的尿碘中位数分别为165.40、138.85、155.65 μg/L;人均日碘摄入量分别为263.54、286.68、328.02 μg/d;居民食盐供碘量对于人体碘营养摄入的贡献率为84.68％.结论 北京市居民人均日碘摄入量达到推荐摄入量,总体上是适宜和安全的,其中食盐中碘是膳食摄碘的主要来源.

Objective To investigate the nutritional status among residents and salt iodine content in Beijing,and to provide a basis for iodine deficiency disorders（IDD） prevention and control.Methods A crosssectional investigation of 120 families from Chaoyang District and Daxing District in Beijing was carried out in 2012.Twenty-four hours urine samples were collected from 360 family members to test urine iodine level.Household salt samples were collected and detected of salt iodine; Iodine nutrition per capita intake and daily family salt consumption were investigated to calculate the contribution rate of iodine by salt iodine.Results The median of urinary iodine concentration in children aged 8-10,adult females and males were 165.40,138.85 and 155.65 pg/L,respectively.Iodine nutrition per capita intake for children aged 8-10,adult females and males were 263.54,286.68 and 328.02 μg/d,respectively.Salt iodine supply contributed 84.68% of human iodine nutrition intake among residents in Beijing.Conclusions Per capita iodine nutrition intake among residents in Beijing has reached the recommended nutrient intake.Iodine in salt is the main source of dietary intake of iodine.