That was my thought as well. At least naively, it seems to follow that regularly donating blood might have health benefits. A typical donation is half a liter, and a person has about 5 liters of blood, so donating should in theory remove about 10% of the crap you've got circulating, right?
Edit: You can donate every 2 months, so donating as often as possible would roughly halve the crud every year (0.9^6 ~= 0.53, ignoring the natural increase over time).
That was my thought as well. At least naively, it seems to follow that regularly donating blood might have health benefits. A typical donation is half a liter, and a person has about 5 liters of blood, so donating should in theory remove about 10% of the crap you've got circulating, right?
Edit: You can donate every 2 months, so donating as often as possible would roughly halve the crud every year (0.9^6 ~= 0.53, ignoring the natural increase over time).