

Treatment with iron supplements usually makes the anemia better. Without enough iron, less hemoglobin and fewer red blood cells are made, leading to anemia. The body needs iron to make hemoglobin (HEE-muh-glow-bin). RBCs contain hemoglobin, a protein that carries oxygen throughout the body. Someone with anemia has a lower number of red blood cells (RBCs) than usual.

Iron-deficiency anemia is anemia that happens when there isn't enough iron in the body.
