Debates in recent times There have been debates in recent times about whether or not Cannabis should be considered as doping in different forms of sports. Studies carried out in the United States indicated that cannabis is the most common drug used with close to 20 million regular users and more than 7 million smokers who use the drug on a daily basis. The World Anti-doping Agency (WADA) however, added cannabis to its list of prohibited drugs in 2004. There were two reasons for this: the first ...