Preemie Being Fed (IMAGE) Washington University School of Medicine Caption Studying preterm infants in the Neonatal Intensive Care Unit (NICU) at St. Louis Children's Hospital, researchers at Washington University School of Medicine in St. Louis found that preemies whose daily diets were at least 50 percent breast milk had more brain tissue and cortical-surface area by their due dates than premature babies who consumed significantly less breast milk. Pictured is a premature infant in the NICU at St. Louis Children's Hospital. Credit JOHN TWOMBLY Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.