Hmmmm. See if I can prove this from personal experience. My children, grandchildren and nephews have always had fluoridated water. They are all high IQ, even the two with learning disabilities. Two of them are outright geniuses. So fluoridated water raises IQs? Wait, previous generations of the family raised without fluoridated water also had high IQs. I can only conclude, based on this small sampling, that this study deserves the scorn with which it has been received.