Aplastic anemia can be caused by

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Aplastic anemia is caused by damage to blood forming elements in the bone marrow, which leads to a decrease in the production of red blood cells, white blood cells, and platelets. Severe hemorrhage (A) can cause anemia, but it is not considered aplastic anemia. A lack of vitamin B12 (C) can cause pernicious anemia, which is a different type of anemia. An inherited condition resulting in the formation of abnormal hemoglobin (D) can cause sickle cell anemia or thalassemia, but not aplastic anemia.

Aplastic Anemia Can Be Caused by