In females ...estrogen has an inhibitory effect on erythropoietin ...which is a stimulator of rbc production .In males ....testosterone has got a stimulating effect on erythropoietin ....thus increases the rbc production in males.....hope this helps. read more
1-females have a hormone estrogen-which has an inhibitory effect on erythropoetin-a hormone essential for erythropoeisis. 2- in males,the testosterone has an accelerating effect on erythropoetin..thereby increasing the rbc count slightly. read more