Polycystic Ovarian Syndrome (PCOS) Support Group
Polycythemia is a condition in which there is a net increase in the total circulating erythrocyte (red blood cell) mass of the body. Primary polycythemia occurs when excess erythrocytes are produced as a result of a proliferative abnormality of the bone marrow. Secondary polycythemia is caused by increases of erythropoietin that result in an increased production of...
ive noticed the older the text/study
the lower the % number and personal opinion also weighs heavy into it as well.