Were Conspiracy Theorists Right?
The federal government has lowered the recommended level of fluoride in drinking water for the first time in five decades.
The Department of Health and Human Services is now advising water supply managers to reduce levels of the mineral to 0.7 milligrams per liter (mg/l). The previous recommendation, developed in 1962, advised communities to permit fluoride concentrations between 0.7 and 1.2 mg/l.
The reduction in recommended fluoride levels was driven in part because Americans now have access to fluoride in various forms, including toothpaste and mouthwashes, which were not in widespread use half a century ago. Because of this, more people are exposed to too much fluoride and can experience fluorosis, white stains in the enamel of their teeth, from too much fluoride. Mild fluorosis appears as scattered white flecks, frosty edges or chalk-like lines on teeth, while the white spots get larger with severe fluorosis.
“Fluoride is voluntarily added to some drinking water systems as a public health measure for reducing the incidence of cavities among the treated population. The decision to fluoridate a water supply … is not mandated by EPA or any other federal entity,” the United States Environmental Protection Agency wrote.