Forensic Policy Considerations of Childhood Lead Toxicity

Childhood lead toxicity remains a nationwide problem, despite significant progress in reducing exposure sources in the United States since the 1970s. Neurodevelopmental sequelae of lead exposures often persist into adulthood, with limited reversibility. These include long-lasting deficits in intelligence, impulse control, and emotional and behavioral regulation, which can increase one's propensity for aggression and criminality. Yet, despite the strong association between lead poisoning and criminality, there is little agreement thus far among U.S. jurisdictions about how to apply such knowledge to criminal legal proceedings. Here, we explore forensic considerations of childhood lead toxicity for evaluation, sentencing, and staff support in the criminal justice system. We cite both clinical science and case law in navigating this complex intersection of forensic psychiatry, public health, and the environment. We aim to provide preliminary guidance on how forensic psychiatrists can approach and refer to lead toxicity in their medicolegal work. This article may hopefully inspire further forensic research on the topic and the eventual creation of standardized, lead-related guidelines for criminal legal proceedings.