Deficiency and excess of groundwater iodine and their health associations

Ruoqi Ma, Mingquan Yan, Peng Han, Ting Wang, Bin Li, Shungui Zhou, Tong Zheng, Yandi Hu, Alistair G. L. Borthwick, Chunmiao Zheng and Jinren Ni ()
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Ruoqi Ma: Peking University; Key Laboratory of Water and Sediment Sciences, Ministry of Education
Mingquan Yan: Peking University; Key Laboratory of Water and Sediment Sciences, Ministry of Education
Peng Han: Peking University; Key Laboratory of Water and Sediment Sciences, Ministry of Education
Ting Wang: Peking University; Key Laboratory of Water and Sediment Sciences, Ministry of Education
Bin Li: Peking University; Key Laboratory of Water and Sediment Sciences, Ministry of Education
Shungui Zhou: Fujian Agriculture and Forestry University
Tong Zheng: Peking University; Key Laboratory of Water and Sediment Sciences, Ministry of Education
Yandi Hu: Peking University; Key Laboratory of Water and Sediment Sciences, Ministry of Education
Alistair G. L. Borthwick: The University of Edinburgh
Chunmiao Zheng: Southern University of Science and Technology
Jinren Ni: Peking University; Key Laboratory of Water and Sediment Sciences, Ministry of Education

Nature Communications, 2022, vol. 13, issue 1, 1-13

Abstract: Abstract More than two billion people worldwide have suffered thyroid disorders from either iodine deficiency or excess. By creating the national map of groundwater iodine throughout China, we reveal the spatial responses of diverse health risks to iodine in continental groundwater. Greater non-carcinogenic risks relevant to lower iodine more likely occur in the areas of higher altitude, while those associated with high groundwater iodine are concentrated in the areas suffered from transgressions enhanced by land over-use and intensive anthropogenic overexploitation. The potential roles of groundwater iodine species are also explored: iodide might be associated with subclinical hypothyroidism particularly in higher iodine regions, whereas iodate impacts on thyroid risks in presence of universal salt iodization exhibit high uncertainties in lower iodine regions. This implies that accurate iodine supply depending on spatial heterogeneity and dietary iodine structure optimization are highly needed to mitigate thyroid risks in iodine-deficient and -excess areas globally.

Date: 2022
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DOI: 10.1038/s41467-022-35042-6

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