what is blood letting in the middle ages
Bloodletting (or blood-letting) is the withdrawal of blood from a patient to cure or prevent illness and disease.Bloodletting was based on an ancient system of medicine in which blood and other bodily fluids were regarded as  humors  that had to remain in proper balance to maintain health.n most cases, phlebotomy now refers to the removal of small quantities of blood for diagnostic purposes. However, in the case of hemochromatosis, which is now recognized as the most common genetic, or inherited, disorder, frequent bloodletting has become an essential, and life-saving procedure.