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目的为了解武汉市居民碘营养状况及研究盐碘适宜浓度,为盐碘浓度调整提供科学依据。方法在2个试验点分别使用(15±3)mg/kg和(25±3)mg/kg碘浓度食用盐进行为期4个月的社区干预试验,采集试验对象的尿样并检测尿碘含量,对不同人群干预前后的尿碘含量和中位数进行分析和比较。结果试验对象尿碘水平均呈下降趋势,下降水平与盐碘浓度成正比;(15±3)mg/kg碘盐较适宜成人及儿童食用,但孕产妇显示碘摄入量不足;(25±3)mg/kg碘盐使成人及儿童碘营养稍高于适宜水平,但能满足孕产妇基本的碘营养需求。结论盐碘浓度平均水平可下调至25 mg/kg,该浓度目前较适宜全人群食用。
Objective To understand the iodine nutrition status of residents in Wuhan and to study the suitable concentration of salt and iodine, and to provide a scientific basis for the adjustment of salt and iodine concentration. Methods The community-based interventions of (15 ± 3) mg / kg and (25 ± 3) mg / kg dietary iodine at two test sites were conducted for 4 months to collect the urine samples of the test subjects and detect the urinary iodine , Urinary iodine content and median before and after intervention in different groups were analyzed and compared. Results The level of urinary iodine in test subjects showed a downward trend, and the level of decrease was proportional to the concentration of iodine. The iodine salt of (15 ± 3) mg / kg was more suitable for adults and children, but pregnant women showed less iodine intake (25 ± 3) The iodine salt of mg / kg makes iodine nutrition in adults and children slightly higher than the appropriate level, but it can meet the basic iodine nutrition needs of pregnant women. Conclusion The average level of salt iodine can be reduced to 25 mg / kg, which is suitable for the whole population at present.