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There are more than 400 types of anemia. These types of anemia are divided into three main groups, according to their cause. There is anemia caused by blood loss, by decreased or faulty red blood cell production, and by destruction of red blood cells.
There are many different causes and types of anemia. Iron-deficiency anemia, the most common type, is usually treated with dietary changes and iron supplement pills. Other types of anemia, such as those associated with chronic diseases or cancer, may need more aggressive treatment. Preventing Iron Deficiency in Infants and Toddlers.