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Original Article
- Clinical Study
- Excessive Iodine Status among School-Age Children in Korea: A First Report
- Young Sik Choi, Soyoung Ock, Sukyoung Kwon, Sang Bong Jung, Kwang-Hyuk Seok, Young Jin Kim, Bu Kyung Kim, Jee-Yeong Jeong
- Endocrinol Metab. 2017;32(3):370-374. Published online September 18, 2017
- DOI: https://doi.org/10.3803/EnM.2017.32.3.370
- 3,943 View
- 41 Download
- 4 Web of Science
- 5 Crossref
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Abstract
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PubReader Background Korea is considered an iodine sufficient country, and several studies have been conducted regarding iodine status in healthy Korean adults, pregnant women, and preschool children. However, data on iodine status in Korean school-age children are lacking. Therefore, the iodine nutrition status of Korean school-age children was investigated by measuring urine iodine concentration (UIC).
Methods This cross-sectional study conducted between April and September 2016 comprised 373 school-age children. UIC was determined using a modified microplate method employing ammonium persulfate digestion followed by Sandell-Kolthoff reaction.
Results The median UIC was 458.2 µg/L. Excessive iodine intake (>300 µg/L) was found in 286 children (76.7%), with extremely high values exceeding 1,000 µg/L in 19.6% of subjects. Insufficient iodine intake (<100 µg/L) was observed in eight children (2.1%). UIC values were not significantly different between sexes.
Conclusion Korean school-age children showed excessive iodine intake. Therefore, education regarding adequate iodine intake in school-age children is needed.
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Citations
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