Fluoride fights bubble up around Washington - OPB
The peer-reviewed Journal of the American Medical Association looked at 74 articles on studies on the links between IQ points and fluoride. Authors of the JAMA article determined that there is a high risk of scientific bias in 52 of those studies and a low risk of bias in 22. Forty-five of the articles originated from China.
The links between fluoride and loss of intelligence show up when the fluoride levels in water are above 1.5 milligrams per liter, the JAMA review found.
“There were limited data and uncertainty in the dose-response association between fluoride exposure and children’s IQ when fluoride exposure was estimated by drinking water alone at concentrations less than 1.5 mg/L,” the JAMA review said.
“That’s much higher than what we use for public water fluoridation,” said Washington state health officer Kwan-Gett.
The CDC says the recommended level for fluoride in a public water system is 0.7 milligrams per liter. Dorow pointed to the centuries-old concept that the dose of a substance often dictates whether or not it is poisonous, not the substance itself.
“There are no negative impacts at normal levels,” Kwan-Gett said.