A total of 147 million people, 2.5% of the world population, consume cannabis (annual prevalence) compared with 0.2% consuming cocaine and 0.2% consuming opiates. The geographical spread of cannabis cultivation and use almost covers every country of the world. As of April 2018, approximately 4.2 million or 14% of Canadians aged 15 and above reported having used cannabis products in the past three months. Cannabis regulations have historically followed the prohibitionist model, but as continuing research sheds light on its potential benefits, the cannabis regulatory landscape is becoming less restrictive.