Lead from gasoline blunted the IQ of about half the U.S. population, study says
Leaded gas was banned in 1996, but exposure to the poison cost people born before then several IQ points on average, researchers estimated.
Hasnain says:
“But on a population basis, shifting the average IQ down even a small amount could have large consequences, said Sung Kyun Park, an associate professor of epidemiology and environmental health sciences at the University of Michigan School of Public Health. The entire bell curve shifts, he explained, with more of the population at what was once the extreme low end of IQ scores.”
Posted on 2022-03-09T07:09:04+0000