Here’s why we hear so many false claims about cannabis

Scientists often highlight the negative effects of drugs to justify their own source of funding
David Nutt
DrugScience (UK)
Tuesday, September 8, 2015

Research on substance use has taught me a major overarching lesson: we are much more likely to demonize drugs for their negative effects than consider their neutral or potentially positive impacts. Or – in scientific terms – there is a built-in bias in the scientific literature, textbooks, and the popular press towards highlighting the negative aspects of drug use. And more ink has been spilled about cannabis than any other drug, perhaps because it’s the most widely used illegal drug and the subject of intense debate concerning its regulation.