There is no distinction between "natural" and synthetic methods of performance enhancement  The natural/unnatural distinction is untenable. Already athletes use all sorts of dietary supplements, exercises, equipment, clothing, training regimes, medical treatments, etc. to enhance their performance. There is nothing ‘natural’ about taking vitamin pills, wearing whole-body Lycra suits, having surgery on ligaments, spending every day in a gym pumping weights or running in shoes with spikes on the bottom. Diet, medicine, technology, and even just coaching already give an artificial advantage to those athletes who can afford the best of all these aids. Since there is no clear way to distinguish from legitimate and illegitimate artificial aids to performance, they should all be allowed. So taking these drugs is no more unnatural than what happens today.  A practical example of an unnatural aid is the Speedo worn in 2008 at the Beijing Olympics. FINA, the world governing body of swimming was concerned about the extraordinary statistics in Beijing where swimmers wearing the Speedo LZR Racer swimsuit won 90 per cent of all available medals and broke 23 world records. Since Speedo launched the suit in 2008, 108 world records have fallen (until February 2009) (1).  Simon Hart, Swimwear giant Speedo hit back at 'unfair advantage' claims, 02/19/2009,   ,accessed 15/05/2011