In an investigation seeking to determine any prospective associations between early lead exposure and ADHD, a research team consisting of Xiaobin Wang, MD, MPH, ScD, the director of the Center on the Early Life Origins of Disease in the Department of Population, Family and Reproductive Health at Johns Hopkins University’s Bloomberg School of Public Health, and colleagues analyzed data from 1479 mother-infant pairs in the Boston Birth Cohort. In total, 299 pairs included a child with ADHD, and 1180 consisted of neurotypical children.