Androgens and Erythropoiesis

Abstract
SINCE early investigations exploring the role of sex hormones on the red cell, hemoglobin and hematocrit,1 , 2 numerous reports have now firmly established that androgens stimulate erythropoiesis. Administration of androgens to a variety of mammals and fowl has increased the reticulocyte count, hemoglobin and bone-marrow erythropoietic activity.3 4 5 Conversely, castration of the adult male in the same species results in a definite decrease in the peripheral red-cell count and hemoglobin concentration.3 , 5 6 7 8 The anemia in castrated male animals is restored to normal by administration of androgens.3 , 4 , 7 , 8 In man, repeated observations have shown that the adult male has higher hemoglobin, hematocrit and red-cell count . . .