US agency links high fluoride exposure to lower IQ in kids

A new government report links high fluoride exposure in drinking water to lower IQ in children.

The report, published by the Department of Health and Human Services’s National Toxicology Program, examined previously published research and found that drinking water containing more than 1.5 milligrams of fluoride per liter is associated with the lower IQs.

The report noted it was not designed to evaluate the health effects of fluoride in water, but the findings were made with...