Sickle cell anemia causes an oxygen deficiency in different parts of the body, which can be dangerous. For instance, if developing cells do not receive enough oxygen, their growth can be stunted. Often, a person with sickle cell anemia will have a low amount of red blood cells because sickle cells are abnormally frail, which can cause anemia. The abdominal and chest pain experienced by someone with sickle cell anemia is caused by arteries that have become obstructed by a buildup of sickle cells. If sickle cells cause spleen damage, the body may become more prone to infection. Sickle cell anemia can also damage blood vessels in the eyes, decreasing vision.