The future may not be as bright. IQ scores have decreased in the US for the first time in decades, new research from scientists at Northwestern University and the University of Oregon suggests. The ...

American IQ test scores have dropped during a recent 13-year period, a remarkable finding that runs counter to the well-established trend of increasing IQ scores throughout much of the 20th century.

About 209 million Americans receive fluoridated water in their taps, according to the Centers for Disease Control and Prevention. (Jim Cole / Associated Press) A new report linking fluoridated ...

A version of this essay first appeared in Jess Steier’s newsletter, “Unbiased Science.” Fluoride is having a rough day in the court of public opinion. The National Toxicology Program (NTP), part of ...

Researchers reveal a potential link between high fluoride exposure and lower IQ in children, but there are significant study limitations, including geographic bias and high risk of bias in many ...

An analysis of more than 70 studies on fluoride and IQ levels concluded there was a relationship between higher levels of the common water additive and lower IQ levels in children, though a large ...