How many liters of blood you lose per year?

Answer 1

Medically speaking, you shouldn't lose any blood at all; this is mainly due to the fact that as your red blood cells die, your body produces the same amount of red blood cells that have died. Of course, un-natural causes (ex: getting a bruise, scratch, wound, blood donation, etc.) can lessen the amount of blood in your system for a little bit, but your body should restore natural order in time.