They found leaded gasoline, banned in 1996, was the direct cause of 151 million psychiatric disorders ... had the most-pronounced mental health and personality differences associated with lead ...

Leaded gas was banned ... data to estimate the mental health effects of such exposures. Researchers linked the lead exposure to an estimated 151 million "excess mental disorders" in the United ...

According to the findings, the national population experienced an estimated 151 million excess mental health disorders attributable ... Use of leaded gas increased after World War II until it ...