Analysis of iodine nutritional status in water-borne high iodine areas of Shandong Province in 2021
10.3760/cma.j.cn231583-20230404-00081
- VernacularTitle:2021年山东省水源性高碘地区碘营养状况分析
- Author:
Ruijuan GUO
1
;
Jiakun WANG
;
Na LIANG
;
Xue ZHANG
;
Fang YANG
;
Haijie LIU
;
Wen JIANG
Author Information
1. 山东省疾病预防控制中心地方病防制所，济南 250014
- Keywords:
Iodine;
Drinking water;
Salts;
Urine;
Goiter
- From:
Chinese Journal of Endemiology
2024;43(8):652-656
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the popularization of non-iodized salt among residents in water-borne high iodine areas and the iodine nutrition status of key populations in Shandong Province.Methods:In 2021, monitoring was conducted on a county-by-county basis in 47 counties (cities, districts, hereinafter referred to as counties) in 9 cities of Shandong Province, in accordance with the newly designated high iodine areas in the "Definition of Water Source High Iodine Areas and High Iodine Disease Areas" (GB/T 19380-2016) and historical high iodine areas. In each monitoring county, administrative villages with a median water iodine level greater than 100 μg/L were sorted by water iodine value, and a systematic sampling method was used to select 5 administrative villages as monitoring sites to investigate the water improvement situation and the iodine level of residents' drinking water. Totally 40 non boarding students aged 8 to 10 from one primary school and 20 pregnant women were selected in each village location to collect household edible salt samples and random urine samples for testing salt iodine and urine iodine levels, and the B-ultrasound method was used for thyroid examination in children.Results:A total of 364 high iodine administrative villages had been monitored, all of which had completed water improvement with a water improvement rate of 100.0%. The median iodine content in residential drinking water was 20.3 μg/L, ranging from 0.1 to 869.1 μg/L; and 11 464 edible salt samples were collected from residents' homes, with a non-iodized salt rate of 82.7% (9 481/11 464). A total of 9 197 urine samples from children and 2 335 urine samples from pregnant women were tested, with median urinary iodine levels of 219.0 and 139.0 μg/L, respectively. A total of 9 197 children were examined for thyroid, with 262 cases detected and a goiter rate of 2.8%.Conclusions:The rate of non-iodized salt in high iodine areas of Shandong Province still needs to be improved. Children's iodine nutrition is above the appropriate level, while pregnant women are at an iodine deficiency level.
