Anemia is a condition where there is a lower than normal number of red blood cells in the blood, usually measured by a decrease in the amount of hemoglobin. Hemoglobin is the oxygen-carrying part of red blood cells. It gives these blood cells their red color.
There are many types and potential causes of anemia. For information about a specific type of anemia, see one of the following articles:
The cause varies with the type of anemia. Potential causes include blood loss, poor diet, many diseases, medication reactions, and various problems with the bone marrow, where blood cells are made. Iron deficiency anemia is most common in women who have heavy menstrual periods.
Risk factors include heavy periods, pregnancy, older age, and diseases that cause anemia.
Review Date: 10/30/2006
Reviewed By: William Matsui, MD, Assistant Professor of Oncology, Division of Hematologic Malignancies, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD. Review provided by VeriMed Healthcare Network.
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Hematology, General Pediatrics
