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.

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 ...

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 ...

A recent study of cognitive analyses says the average intelligence quotient, or IQ, in the United States is about 98.

Is America getting dumber? That’s the burning question after a new study reveals a troubling trend: American IQ scores have ...

A rigorous nine-year research review looking at the relationship between fluoride and intelligence in children concludes that as fluoride levels rise, IQ drops. Every 1 part per million increase in ...

Of all the lingering symptoms of long Covid, difficulty focusing and thinking, known as brain fog, may be the most frightening and baffling. A new study published Wednesday in the New England Journal ...

A post shared on X claims that a Harvard University study found that fluoride significantly lowers children’s IQ. Verdict: ...

New York – A U.S. government report expected to stir debate concluded that fluoride in drinking water at twice the recommended limit is linked with lower IQ in children. The report, based on an ...

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 ...