New research finds that iron supplementation for low-risk breastfed infants born at term does not improve psychomotor development. JAMA Pediatrics Editor in Chief Dimitri Christakis, MD, MPH, and JAMA Pediatrics Associate Editor Alison Galbraith, MD, MPH, discuss infant iron supplementation with Martha Sola-Visner, MD, associate professor at Boston Children’s Hospital and Harvard Medical School. Related Content: Effect of Low-Dose Iron Supplementation on Early Development in Breastfed Infants