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Lance Armstrong: Doping in sports
POSTED: 12:23 PM Jul 13 2011
UPDATED: 7:40 AM Jan 18 2013
Lance Armstrong confessed to doping to win the Tour de France during an interview with Oprah Winfrey on Thursday. In sports, doping refers to the use of performance-enhancing drugs and substances taken to mask performance-enhancing drugs in test. Particual types of drugs are banned by sports organizations. Click to find out more.
