Young boys who drink fluoridated tap water are at greater risk for
a rare bone cancer, Harvard researchers reported yesterday.
The study, published online yesterday in a Harvard-affiliated journal, could intensify
debate over fluoridation and mean more scrutiny for Harvard’s Dr. Chester
Douglass,accused of fudging the findings to downplay a cancer link.
“It’s the best piece of work ever linking fluoride in tap water and
bone cancer. It’s pretty damning for (Douglass),” said Richard Wiles
of the Environmental Working Group, which filed a complaint with the National
Institutes of Health against Douglass.
Douglass, an epidemiology professor at Harvard’s School of Dental Medicine,
is paid as editor of the Colgate Oral Care Report, a newsletter supported by the
Harvard and the NIH are investigating whether Douglass misrepresented research
findings last year when he said there was no link, despite extensive research
to the contrary by one of his doctoral students. The NIH gave Douglass at least
$1 million for the research.
That student, Dr. Elise Bassin, wrote in yesterday’s Cancer Causes and Control
that boys who drink water with levels of fluoride considered safe by federal guidlines
are five times more likely to develop osteosarcoma than boys who drink unfluoridated
water. About 250 U.S. boys each year are diagnosed with osteosarcoma, the most
common type of bone cancer and the sixth most common cancer in children. Bassin
notes that more research is needed to “confirm or refute this observation.”
Douglass, in a letter to the editor published in the same issue, said Bassin’s
study was a “partial view of this ongoing study,” and urged readers
to be “especially cautious” when interpreting the findings.