bts eitm performance enhancing drugs cohen orig_00012226.jpg
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CNN Explains: Performance-enhancing drugs
CNN's Elizabeth Cohen explains why athletes might use PEDs and how they can do the body more harm than good.
02:28 - Source: CNN
Athletes and doping 15 videos
bts eitm performance enhancing drugs cohen orig_00012226.jpg
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CNN Explains: Performance-enhancing drugs
02:28
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Olympic ban on Russian track team upheld
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On GPS: Russian athletes under investigation
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IAAF official: Russian officials ignoring doping rules
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LONDON - JUNE 27: Maria Sharapova of Russia serves against Nathalie Dechy of France during the seventh day of the Wimbledon Lawn Tennis Championship on June 27, 2005 at the All England Lawn Tennis and Croquet Club in London. (Photo by Mike Hewitt/Getty Images)
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Is Maria Sharapova's failed drug test career ending?
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Peyton Manning denies doping allegations
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5 infamous sports doping scandals
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The evolution of doping in sport
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CNN visits secretive Russian lab
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Report: Ban Russia from athletics for doping
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WADA to consider banning countries for doping offenses
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Report: Doping still widespread in cycling
03:03
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Canadian sprinter Ben Johnson sets a world record in the 100 metres final at the 1988 Summer Olympics in Seoul, 24th September 1988. (Photo by Tony Duffy/Getty Images)
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Disgraced sprinter now fights doping
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A history of doping exposed
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Sports doping scandal rocks Australia
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