Blood transfusions are commonly used to give blood to people who have experienced some kind of trauma which caused a significant amount of blood loss. This is obviously not the case unless the person you’re referring to has been in 11 accidents in one year. Blood transfusions may also be used to treat a severe anemia or thrombocytopenia caused by a blood disease. People suffering from hemophilia or sickle-cell disease may also require frequent blood transfusions.
Anemia is a deficiency of red blood cells, or hemoglobin. Every cell in the human body requires oxygen and is delivered through the blood stream. Iron is a essential part of hemoglobin, without it oxygen will not bond in the red blood cell and thus not be delivered throughout the body. Iron supplements or a high iron diet can resolve these issues, but in extreme cases blood transfusions may be necessary.
While anemia is a probable cause for multiple blood transfusions, it is only one of many possible causes.
