http://www.naturalmedicine.com/news_...from=&ucat=13&
This part really scared me!
"The ADA warning also comes after eleven Environmental Protection Agency employee unions in 2005 called for a moratorium on drinking water fluoridation programs across the country following research suggesting that fluoride poses a risk of causing cancer. The unions acted following revelations of evidence from Harvard School of Dental Medicine linking fluoridation with elevated risk of a fatal bone cancer in young boys."