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Comment & Response
December 30, 2019

Association Between Maternal Fluoride Exposure and Child IQ

Author Affiliations
  • 1Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
JAMA Pediatr. 2020;174(2):214. doi:10.1001/jamapediatrics.2019.5254

To the Editor Green et al1 question the safety of public water fluoridation and fluoride supplementation, based on finding (1) an increase of 1 mg/L in maternal urinary fluoride (MUFSG) was associated with a 4.49 lower FSIQ score in boys (P = .02), and (2) an increase of 1 mg in fluoride intake was associated with a 3.66-lower FSIQ score among boys and girls (P = .04).1 We ask: what is the likelihood that these statistically significant findings are true?