<qa>  What is anemia common among low-income women after they have given birth?Anemia is common among low-income women after they have given birth. Anemia, or low hemoglobin in the blood cells, is usually caused by not having enough iron. Blood cells usually carry oxygen to other parts of the body. Without enough hemoglobin, the ability of blood cells to carry oxygen is decreased. Memory and work may be impaired. The purpose of this study is to evaluate three methods of giving iron to prevent anemia among low-income women after they have given birth. 