THE DEAN of the Harvard School of Dentistry, Chester Douglass, said in written testimony to the National Research Council that he found no evidence that fluoridation increased risk of osteosarcoma, a rare bone cancer. However, in a 2001 study which he cited, and oversaw, it was found that boys who drink fluoridated water have a greater risk of developing osteosarcoma. In response eleven EPA employee unions representing over 7000 US environmental and public health professionals have called for a moratorium on drinking water
fluoridation programs and have asked EPA management to recognize fluoride as posing a serious risk of causing cancer in people.