Why woman has less rED BLOOD CELs than man?

Women typically have lower red blood cell (RBC) counts than men due to several physiological factors, including hormonal differences. The presence of estrogen in women can influence iron metabolism and the production of erythropoietin, a hormone that stimulates RBC production. Additionally, menstrual blood loss contributes to lower iron levels, which are essential for RBC production. Overall, these factors lead to a generally lower hematocrit and hemoglobin concentration in women compared to men.