Doctors use the age of red blood cells to decide whether or not someone was blood doping by noticing if there are more older-aged cells present.
Blood doping refers to an illegal process whereby an athlete provides the body with more oxygen in the body. This leads to a faster rate of cellular respiration and an increased release of energy.
It should be noted that doctors use the age of red blood cells to decide whether or not someone was blood doping by noticing if there are more older aged cells present than newly produced cells.
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