If less bleeding….

• could become a blood donor

• 70% of donors are men

• “The narrowing margin between the supply and the demand for blood raises concerns about the adequacy of the American blood supply in the future.”

• Paliavin JA. Why do they give the gift of life?A review of the research on blood donors since 1977.Transfusion 1990;30:444-59. Vamvakas EC. Epidemiology of red blood cell transfusion. Transfusion Medicine Reviews 1996;10:44-61.