With the participants now aged 16 to 26 years old, we found those who’d consistently been drinking fluoridated water had an IQ score 1.07 points higher on average than those with no exposure,” Professor Do said.
“We also found people who had dental fluorosis – a reliable biomarker related to excessive fluoride intake in early childhood – had IQ scores 0.28 points higher on average than those without.
“Factors which may affect the relationship between fluoride and IQ, such as socioeconomic status, were taken into account when determining the results.”
“There have been claims water fluoridation can negatively affect children’s neurodevelopment, but these results provide consistent evidence this is not the case.
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