IQ of over half of the US population may have been lowered by leaded petrol

Exposure to leaded petrol as a child has been linked to an average IQ drop of 2.6 points among US adults, increasing to 5.9 points among those born in the mid-to-late 1960s Health 7 March 2022 By Clare Wilson Fumes from cars using leaded petrol may affect IQ PictureLux/The Hollywood Archive/Alamy More than half of … Read more