"Because the impacts of problem drug users are largely hidden, and also because their number is actually relatively small (approximately 330,000; Hay et al., 2008),22 people’s understanding of problem drug use tends to come from remote sources – the media (including the internet, television, films, magazines and books) and anecdote – rather than from direct experience. This provides fertile ground for the growth of myths and stereotypes: for example, the prevalent belief in instant addiction and the myth of the drug dealer offering free drugs at the school gates."

Source

Lloyd, Charlie, "Sinning and Sinned Against: The Stigmatisation of Problem Drug Users," (London, United Kingdom: UK Drug Policy Commission, August 2010)p. 49.
http://www.ukdpc.org.uk/publi…