DEAR DOCTOR K: My teenage daughter recently learned that she has iron deficiency and anemia. Why would her iron be low? What is the treatment?
DEAR READER: Anemia means that the blood does not have enough red blood cells. These cells carry oxygen from the lungs to the rest of the body. There are many kinds of anemia. In the United States, iron-deficiency anemia is the most common; it occurs when the body does not have enough iron to make red blood cells.