Polycythemia Vera is the disease of bone marrows in which excessive production of red blood cells occur. During the course of this bone marrow disease your body produces an increased number of blood cells mainly red blood cells causing thickening of the blood leading to high blood pressure and various other disease including the one associated with heart too. It is a blood disorder which can also cause overproduction of white blood cells or platelets also. This sort of disorder is usually rare and develops very slowly over the years. It does not get obvious within days or even weeks in fact it takes about 4 to 5 years to actually witness the occurrence of this disease. http://www.naturalherbsclinic.com/Polycythemia-Vera.php
