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Comment & Response
December 30, 2019

Association Between Maternal Fluoride Exposure and Child IQ

Author Affiliations
  • 1Centre for Molecular Biosciences, University of Ulster, Coleraine, Northern Ireland
  • 2School of Biological Sciences, University of Edinburgh, Edinburgh, Scotland,
  • 3American Environmental Health Studies Project, Lexington, Massachusetts
JAMA Pediatr. 2020;174(2):215. doi:10.1001/jamapediatrics.2019.5266

To the Editor Many media accounts and critic comments on the Green et al study1 state “this is just one study” and “more research is needed.” We disagree. A search of PubMed and other sources found more than 60 human epidemiologic studies on fluoride neurotoxicity, with the overwhelming majority reporting significant associations with adverse effects including lowered IQ. Many of those studies were done at exposure levels that some people will experience in artificially fluoridated areas. More than 200 animal studies have also been published, most finding adverse neuroanatomical, neurochemical, and/or neurobehavioral effects.