Final answer:
Anemia may be related to Mrs. Byrd's iron supplement therapy.
Step-by-step explanation:
One of the problems that may be related to iron supplement therapy is anemia. Anemia is a condition where the blood has an inadequate volume of red blood cells, leading to a reduced capacity to carry oxygen. Iron-deficiency anemia is the most common type of anemia and occurs when the body does not receive enough iron. Since iron is needed for the production of hemoglobin, a lack of iron can result in the improper functioning of hemoglobin and oxygen transport.