World anti-doping officials have warned that as many as 10 per cent of athletes competing at this year's Olympics could be using drugs.
The World Anti-Doping Agency director general, the New Zealander David Howman says annual testing statistics in the past have revealed that maybe between one and two per cent of athletes who are tested are cheating.
But Howman says early findings from the WADA-backed research projects into doping among international athletes are alarming... saying numbers are more in the double digits.
He says if there is more than 10 per cent of the athletes in the world being tempted to take the shortcut by taking prohibited substances, then they've got an issue that is not being confronted as well as it should be.
