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Attention-deficit/hyperactivity disorder (ADHD) is the most common childhood-onset neurodevelopmental disorder. Although it is highly heritable, ADHD has a complex etiology, and noninherited factors also contribute.1 Early environmental exposures that may cause neurobiological dysfunction and confer risk for ADHD (eg, lead and other toxins) have been gaining increased attention of late.1
Cooper M, Langley K, Thapar A. Antenatal Acetaminophen Use and Attention-Deficit/Hyperactivity DisorderAn Interesting Observed Association But Too Early to Infer Causality. JAMA Pediatr. 2014;168(4):306-307. doi:10.1001/jamapediatrics.2013.5292