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Ji Yeon Choi 1 Article
Thyroid
Evaluation of Iodine Status among Korean Patients with Papillary Thyroid Cancer Using Dietary and Urinary Iodine
Ji Yeon Choi, Joon-Hyop Lee, YoonJu Song
Endocrinol Metab. 2021;36(3):607-618.   Published online June 21, 2021
DOI: https://doi.org/10.3803/EnM.2021.1005
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  • 3 Crossref
AbstractAbstract PDFPubReader   ePub   
Background
Concerns have been raised regarding thyroid disorders caused by excessive iodine in Koreans, who have iodine-rich diets. This study evaluated iodine status using dietary iodine intake and urinary iodine in papillary thyroid cancer (PTC) patients.
Methods
Dietary data of PTC patients were assessed using a 24-hour recall and food frequency questionnaire (FFQ), and urinary iodine concentrations (UICs) were also obtained. To compare the iodine status of PTC patients, Korean adults with or without thyroid disease from the Korea National Health and Nutrition Examination Survey, which had 24-hour recall data and urinary iodine measurements, were analyzed.
Results
The median daily iodine intake by 24-hour recall was 341.7 μg/day in PTC patients, similar to the levels of other Korean adults. Based on UICs, the prevalence of excessive iodine was 54.4% in PTC patients, which was similar to the prevalence among subjects with thyroid disease (55.4%) but slightly higher than that in subjects without thyroid disease (47.7%). Based on dietary iodine by 24-hour recall, the prevalence of excessive iodine intake was 7.2%, which was higher than that among subjects with (4.4%) or without (3.9%) thyroid disease. The dietary iodine intake based on 24-hour recall was closely correlated with the UIC (r=0.4826) in PTC patients, but dietary iodine by FFQ was not significantly correlated with either 24-hour recall or UIC-based dietary iodine.
Conclusion
Excessive iodine intake was more common in PTC patients than in subjects without thyroid disease. Further longitudinal research is necessary to elucidate the role of dietary iodine in PTC.

Citations

Citations to this article as recorded by  
  • Association between iodine nutrition and cervical lymph node metastasis of papillary thyroid microcarcinoma
    Hengqiang Zhao, Jin Hu, Le Cui, Yiping Gong, Tao Huang
    Frontiers in Endocrinology.2023;[Epub]     CrossRef
  • Effect of iodine restriction on short-term changes in thyroid function in patients with subclinical hypothyroidism
    Obin Kwon, Dong Yeob Shin, Eun Jig Lee
    Journal of Nutrition and Health.2022; 55(2): 250.     CrossRef
  • Iodine nutrition and papillary thyroid cancer
    Xueqi Zhang, Fan Zhang, Qiuxian Li, Chuyao Feng, Weiping Teng
    Frontiers in Nutrition.2022;[Epub]     CrossRef
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