Lead Exposure in Last Century Shrunk IQ Scores of Half of Americans

Tuesday, March 8, 2022
Gas pump with lead warning
Gas pump with lead warning

In 1923, lead was first added to gasoline to help keep car engines healthy. However, automotive health came at the great expense of our own health and well-being.

A new study calculates that exposure to car exhaust from leaded gas during childhood stole a collective 824 million IQ points from more than 170 million Americans alive today, about half the population of the United States. Read more about the new findings from Duke PhD clinical psychology candidate Aaron Reuben and his collaborators at Florida State University study here.