Cyclists' Blood Doping Associated with Cerebral Blood Clots
American Academy of Neurology (AAN)A recent case study has associated cerebral sinus thrombosis, a condition that may lead to tissue death in the brain, with the practice of "blood doping." Blood doping is the use of human growth hormones to increase the proportion of oxygen-carrying red blood cells in an athlete's blood. Thrombosis is a blood clot within a blood vessel. This method of performance enhancement is widely practiced because it is not readily detected through urine testing.