Executive summary The overall body of evidence supports an association between childhood lead exposure and ADHD diagnosis and/or ADHD-related symptom domains. The most consistent links are with hyperactivity, impulsivity, and broader externalising behavioural dysregulation. That does not mean lead is…

Lead is one of the most studied environmental toxins in public health. For decades, concern focused mainly on obvious lead poisoning: severe symptoms, high blood lead concentrations and urgent medical treatment. Today, the evidence points to a more difficult problem.…