Relating to anemia, the condition of having less than the normal number of red blood cells or less than the normal quantity of hemoglobin in the blood. The oxygen-carrying capacity of the blood is, therefore, decreased. Persons with anemia may feel tired and fatigue easily, appear pale, develop palpitations (feelings of rapid heart beating) and become unusually short of breath. Children with chronic anemia are prone to infections and learning problems. A person can become anemic by three mechanisms. One or more of these mechanisms must be operating to produce anemia: Hemorrhage -- bleeding Hemolysis -- excessive destruction of red blood cells Underproduction of red blood cells Women are more likely than men to have anemia because of the loss of blood each month through menstruation. Iron deficiency anemia is common and in adults is most often due to chronic blood loss. This can be from menstruation or from small amounts of repeated bleeding (which can be very subtle) and in children is due mainly to not enough iron in the diet. Anemia is also often due to gastrointestinal bleeding caused by medications including such very common drugs as aspirin and ibuprofen (Advil or Motrin). There are many forms of anemia, some of them common, others rare. They include, for example: Aplastic anemia Benzene poisoning Fanconi anemia Hemolytic disease of the newborn Hereditary spherocytosis Iron deficiency anemia Osteopetrosis Pernicious anemia Sickle cell disease Thalassemia Myelodysplastic syndrome and a host of other bone marrow diseases. "Anemic" infers lacking vitality, listless and weak as, for instance, in an anemic attempt to hit a ball or an anemic response to any situation.