From childhood to old age, fluoridated water has no negative effect on IQ or cognition, study finds​From childhood to old age, fluoridated water has no negative effect on IQ or cognition, study finds 

 Despite the claims of RFK Jr. and others, tests of intelligence and brain function were the same whether or not people drank fluoridated water while growing up, new research shows.  ​​Despite the claims of RFK Jr. and others, tests of intelligence and brain function were the same whether or not people drank fluoridated water while growing up, new research shows.