What are the benefits of a blood transfusion?

Treat anemia. People with significant anemia (low red blood cell count) have a reduced ability to deliver oxygen to the brain and other organs of the body. Correcting anemia with a blood transfusion can improve the symptoms of anemia such as fatigue and dizziness, and in more serious cases can be life-saving.
Blood Transfusion. If someone has severe anemia because of blood loss or other causes, it might be indicated to transfuse blood.