According to (Greenstone, 2010), the practice of bloodletting was a preferred method adopted by doctors and barber-surgeons for several centuries, and is currently, probably surprisingly, still used in a few particular symptoms. The success of bloodletting in treating ailments like pneumonia was persuasively countered in the mid-nineteenth century, but medical conservatism made sure that bloodletting continued well into the 20th century. Currently, phlebotomy therapy is centrally employed in Western medical practice for a few conditions like polycythemia Vera, hemochromatosis and porphyria cutanea tarda. Polycythemia Vera is a disorder that involves the stem cell bone marrow and causes overproduction of red blood cells and mutable excessive
