Beyond IQ scores, researchers are investigating links between fluoride and behavioral disorders like attention deficit hyperactivity disorder. ADHD is a complex condition, but environmental toxins are one suspected contributor – and fluoride has emerged as a potential culprit. In 2015, an ecological study examined ADHD rates across U.S. states in relation to water fluoridation levels. The results were striking: states with more fluoridated water had significantly higher ADHD prevalence, even after adjusting for socioeconomic differences.
