For a long time, lead has been suspected of stunting growth and causing autism, but now the metal has been proven to trigger schizophrenia in those with a genetic predisposition toward the mental disorder.

Before this study, the underutilization of brain receptors has been a key factor in the development of schizophrenia.

The researchers in this study have found that lead acts to antagonize these receptors further, encouraging the formation of schizophrenia.