What is anemia?
A person with anemia has a reduced number of red blood cells in the bloodstream. Red blood cells contain hemoglobin, a molecule that carries oxygen. A decrease in the number of red blood cells reduces the amount of oxygen that can be carried by the blood to the body tissues. Anemia may be caused by a variety of diseases, including blood loss, low dietary iron, low folate, and vitamin B12 deficiency.

What are the symptoms of anemia?
Early symptoms of anemia include fatigue, weakness, pale skin, headaches, and faintness upon standing. Later symptoms include palpitations, rapid pulse, fainting, and worsening shortness of breath with exertion.

How does the doctor treat anemia?
Treatment for anemia may include corticosteroids, erythropoietin, vitamin supplements, iron supplements, and blood transfusion.