The Manhattan Project and the Fluoride Conspiracy

Scientists on both sides of the issue agree that the risks of fluoridated water haven't been studied to the extent one would expect. A follow-up study in 2011 was unable to replicate their results from a 2006 study. It's clear there's some risk associated with fluoride, but at the concentrations typically used in the United States, that risk may be no more severe than stained teeth.