The use of a drug, such as a steroid or a blood product, such as erythropoietin, to improve athletic performance.

An antiquated form of cheating used in the 70s by competative swimmers and track runners. An athelete has some of their blood removed prior to a match (far enough in advance that the body regenerates the lost blood) and then immediately before the competition redeposits the extracted blood in the...

The practice of using drugs to improve performance in a sportdoping scandal/ban/test etc.