Athletes are not allowed to drink coffee or other caffeinated beverages? That seems excessive. Also, cannabis is far more likely to impair than it enhance performance ("Oh, wow, like I totally spaced and forgot I was supposed to be competing in the finals today"). At least the list is going to be fixed.

Insulin is one of a number of drugs that should be removed from the list of banned substances as part of a more scientific approach to the anti-doping battle, a member of the IOC's medical commission said Thursday.

Dr Harm Kuipers told a conference in Madrid that only substances that could be shown both to enhance performance and to produce adverse effects in athletes' health should be prohibited.

He said that caffeine, narcotics such as heroin and morphine, glucocorticoids, pseudo ephedrine and cannabis were all likely to be removed when the World Anti-Doping Agency produces a revised list of banned substances next year.