Ferreira MKM, Nascimento PC, Bittencourt LO, Miranda GHN, Fagundes NCF, Zahoori FV, Martinez-Mier EA, Buzalaf MAR, Lima RR - "Is there any association between fluoride exposure and thyroid function modulation? A systematic review" PLoS One 19(4):e0301911 (2024). doi: 10.1371/journal.pone.0301911
https://journals.plos.org/plosone/artic ... ne.0301911
Abstract
Numerous pre-clinical and observational studies have explored the potential effects of fluoride (F) at varying concentrations on diverse systems and organs. While some have assessed the endocrinological conditions of children and adults, a consensus regarding the interaction between F and the thyroid remains elusive. This systematic review aimed to gather primary evidence on the association between F and changes in the thyroid at optimal and high levels in water supply as stipulated by the World Health Organization. A search strategy, incorporating terms pertinent to the studies, was employed across PubMed, Scopus, Web of Science, Lilacs, and Google Scholar. Following the review of studies, data were extracted and analyzed using the Grading of Recommendations, Assessment, Development, and Evaluations to assess the quality of the evidence. Our results yielded 3,568 studies, of which seven met the inclusion criteria for this review. Five of the seven studies identified an association between high F exposure and thyroid function. In the analysis of methodological quality, every study was found to have major or minor methodological issues and significant risk of bias. The overall confidence in the evidence was deemed low for all outcomes in the seven studies. The evidence compiled in this review suggests a potential association between chronic high levels of F exposure and thyroid damage. Nonetheless, further studies with robust design and high methodological quality are required to provide evidence for policy makers and health care practitioners.
2024: Is there any association between fluoride exposure and thyroid function modulation? A systematic review
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