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.

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 ...

High schoolers with higher IQs are significantly more likely to be moderate or heavy drinkers as adults, according to a new study from UT Southwestern Medical Center. jovannig - stock.adobe.com High ...

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 ...

Is America getting dumber? That’s the burning question after a new study reveals a troubling trend: American IQ scores have dropped across most cognitive domains. This latest finding, which draws ...

Remember when you were in school, an organization would come in to teach an anti-drug program? If you went to school in the ’80s and ’90s (way back in the 1900s, as our kids now say), you probably ...

Communities started adding fluoride to the water supply in 1945. But now, a new analysis finding a potential link between added fluoride and lower IQs in children is causing concern. The National ...

A new report linking fluoridated drinking water to lower IQ scores in children is sure to ratchet up the debate over a practice that’s considered one of the greatest public health achievements of the ...