Iron plays a crucial role in many vital functions and in this episode, Char Witmer, MD, Clinical Director of Hematology at Children's Hospital of Philadelphia, gets us excited about hepcidin, ferritin, reticulocyte counts, and more! We discuss why premature infants are particularly vulnerable to iron-deficiency anemia, how to provide supplementation, dietary sources of iron, laboratory measurements of iron, and more in this fascinating episode on anemia.