There's been a lot of talk recently about the presence of fluoride in the water supplies of cities across the United States and possible health risks associated with the chemical's consumption. Now, a new study is adding to the scientific literature debunking one popular claim. The latest research, published Dec. 18 in the Journal of Dental Research , found that people aged 16 to 26 years old who have been consistently drinking fluoridated since childhood had an average IQ score that w...