Marijuana will become an unavoidable policy issue for health watchdogs in coming years. Growing scientific evidence about the medical benefits and a rollback of laws banning the drug mean that health agencies will have to make a determination on marijuana. “The WHO (World Health Organization) will probably have to come up with a new stance on cannabis soon, given the pressure it is facing,” Pavel Pachta, former deputy secretary of the International Narcotics Control Board, told the Medical Cannabis and Cannabinoids conference in Prague.