Dangerous Medicine: What to Know About Performance-Enhancing Drugs

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  • performance-enhancing drugs
  • performance-enhancing drugs
  • performance-enhancing drugs
  • performance-enhancing drugs
  • performance-enhancing drugs
  • performance-enhancing drugs
  • performance-enhancing drugs
  • performance-enhancing drugs
  • performance-enhancing drugs
  • performance-enhancing drugs
  • performance-enhancing drugs
  • performance-enhancing drugs

Erythropoietin

Erythropoietin (EPO) is a hormone naturally produced in the kidneys that increases "production of red blood cells and hemoglobin, resulting in improved movement of oxygen to the muscles," the Mayo Clinic writes. Disgraced cyclist Lance Armstrong admitted to using EPO, illegal blood transfusions and testosterone to help him win seven Tour de France titles and a bronze Olympic medal. EPO has been banned by the WADA since the 1990s. (Photo: Lucas Jackson /Landov/REUTERS)

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