In fact this has recently been studied. >https://sciencenordic.com/body-death-denmark/frequent-blood-donors-live-longer/1425568 https://sciencenordic.com/body-

In fact this has recently been studied. >https://sciencenordic.com/body-death-denmark/frequent-blood-donors-live-longer/1425568 https://sciencenordic.com/body-death-denmark/frequent-blood-... > A new study concludes that regular blood donors are not at a greater risk of a premature death than those who rarely donate blood.