This article suggests, based on significant anecdotal evidence, that the drugs noted may definitely have an "up" side relative to dealing with a number of maladies. In view of these facts, and those related to the wonders of hemp oil, etc., it's no surprise they are all "outlawed" by TPTB, who prefer that you become "soylent green" rather than being healthy and happy :)

http://www.guardian.co.uk/science/2009/oct/23/lsd-ecstacy-health-benefits