Objective To understand the iodine content of edible salt and iodine nutritional intake levels in Hechuan District of Chongqing,so as to provide scientific evidence for the relevant departments to grasp the trend of iodine nutrition changes among key populations in the region,to adhere to the strategy of adapting to local conditions,guiding classification,and scientifically supplementing iodine,to take targeted measures and strategies in a timely manner for preventing iodine deficiency and excess.Methods According to the stratified sampling method,200 children aged 8-10 and 100 pregnant women in Hechuan District were selected annually for monitoring their salt and urine iodine levels.Results The coverage rate of iodized salt,qualified rate of iodized salt,and consumption rate of qualified iodized salt among key populations in Hechuan District from 2019 to 2023 were all greater than 95.0％.The median salt iodine content was 25.2 mg/kg,and the interquartile range was between 22.9 and 27.9 mg/kg.There was no statistically significant difference in the distribution of salt iodine content in different regions(H=5.57,P＞0.05).The salt iodine content of pregnant women was higher than that of children(Z=-2.09,P＜0.05).The median urine iodine of children aged 8-10 years old was 202 μg/L.Only 34.2％ of children had moderate urinary iodine levels,14.7％were iodine deficient,33.2％ were above the appropriate level,and 17.9％ were iodine excess.There was no statistically significant difference in the distribution of urinary iodine content between male and female children(H=-1.42,P＞0.05).The median urine iodine of pregnant women was 172 μg/L.Only 36.8％ of pregnant women were at an appropriate level,38.0％ were iodine deficient,19.6％ were above the appropriate level,and 5.5％ were excessive.The urine iodine content of children was higher than that of pregnant women(Z=-4.05,P＜0.05).Conclusion The popularization of iodized salt in Hechuan District of Chongqing is relatively high,with a uniform and stable distribution.But children have the risk of excessive iodine intake,while pregnant women have the risk of insufficient iodine intake.It is suggested to adjust the iodization standards for table salt in Chongqing,provide specialized salt with high iodine content for pregnant women,lactating women and other special needs groups.
NETL
NSTL
万方数据
