The Tracking Evaluation Of The New Standard Iodine Concentration In The Edible Iodized Salt For The Effect Of Prevention And Control IDD In The Short Time In Yunnan Province

Ⅰ、ObjectiveTo survey the residents’ iodine nutrition in experimental county at the timethat’s before and after the edible iodized salt with new standard concentration waseaten, which contained the results of urine iodine concentration, edible iodized saltiodine concentration, drinking water iodine concentration, etc. Then according to theresults of this survey to expound and prove the scientificalness and the feasibility ofthe new standard concentration in edible iodized salt for prevention and control IDDin Yunnan province.Ⅱ、MethodsAccording to the urinary iodine monitoring data in recent years: choose theCounty of Mou-ding, Nan-jian, Liang-he, An-ning and Ning-er,5countiesaltogether as the project counties for this survey. Randomly selected3survey points(urban area, rural area of near the city and rural area of far away the city) in eachcounty. Then, randomly sampled residents’urine and salt to test the iodineconcentration in the survey point, with the time that’s before the new standard iodized salt delivered, after experiment3weeks and3months, respectively. Todynamic evaluation the iodine nutrition status of the pilot population according tothe results of this reserch.Ⅲ、Results1. The awareness rate of iodine deficiency disease prevention knowledge wereincreased9.4, and17.7percentage points, Before and after the health education andpropaganda, in4-6Grade pupils and housewives, respectively. It’s show the effect ofhealth education was obviously.2. The median of drinking water iodine concentration was2.14μg/L, the rangewas0.65-10.38μg/L.97.0%drinking water sample’s iodine concentration were lowerthan10μg/L.3. The iodine concentration median of the iodized salt was23.2mg/Kg,23.7mg/Kg and24.1mg/Kg, in three random inspection(before the new standardiodized salt delivered, after experiment3weeks and3months),respectively. Ingeneral, the edible salt iodine concentration there were statistical difference betweenthe times in which before and after the new standard iodized salt delivered, and therewere no significant difference between the times in which after experiment3weeks and3months.4. Median of Urine Iodine (MUI) of the common population was279.71μg/L,239.64μg/L and226.26μg/L, in three random inspection(before the new standardiodized salt delivered, after experiment3weeks and3months),respectively. Ingeneral, the urine iodine concentration was reducing gradually, and urine iodineconcentration of population in rural was higher than urban.5. Median of Urine Iodine (MUI) of the special population was237.40μg/L,166.09μg/L and161.51μg/L, in three random inspection(before the new standardiodized salt delivered, after experiment3weeks and3months), respectively. Therewere statistical difference in three times of urine sampling results, and the urineiodine concentration of special population after the new standard iodized saltwas distributed was lower than before,but the urine iodine concentration there was no significant difference between urban and rural special population.6. In general, the goiter rate of population was2.41%in the5project counties.Ⅳ、Conclusion1. To common population: According to the urinary iodine monitoring data, wecan conclude the new standard edible iodized salt was more suitable and safe thanthe old standard,and it’ll reduce the risk of high iodine intake;To special population: The ratio of iodine nutrition in “optimal” was raised,but the risk to suffer from IDD was increased,while they used the new standardedible iodized salt.2. According to the salt iodine monitoring data, the results were steady-going,good uniformity, and the natural loss of iodine was fewer. The new standard edibleiodized salt was more steady and safety.3. According to the drinking water iodine monitoring data, drinking water’siodine concentration was lower,97.0%drinking water sample’s iodine content werelower than10μg/L. That could conclude the external environment was deficient in theiodine.