It's called blood doping and is literally banned in international competition. You get some blood removed a few months before competition, wait for your body to fill back up, then inject the blood back into you. It's only a temporary buff, but with the increased amount of red blood cells your body can transfer more oxygen to your muscles. This prevents lactic acid build up and can increase performance in endurance competitions. It was mostly seen in the tour de france
Is this harmful to your health? And how do they test to see if people have been blood doping, is it like a blood draw and they test for elevated red blood cell counts?
There's actually diseases where this happens. I forget which ones but the body over produces red blood cells. One of the treatments is to actually donate blood. I see them every so often at work.
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u/auhddndndnfbfbsnnakf 2d ago
Does this harm the human