Doping Several athletes have been stripped of medals due to doping.
Age falsification Two athletes subsequently lost their medals as a result of fraudulently misstating their age on official documents: Bahrain's 2006 steeplechase silver medallist
Tareq Mubarak Taher and Morocco's
Ahmed Baday (1998 5000 metres bronze). In addition to this, later analysis of
Moses Kiptanui's age when having won the 1990 1500m showed he was marginally over age (aged 19 years, 315 days) at the time of his victory, though this result has not been rescinded. ==Title defenses==