Once and for all, marijuana is not a gateway drug

Correlation isn't the same thing as causation
Vice (US)
Tuesday, October 13, 2015

As the 2016 election approaches, marijuana legalization is in the air once again, with ballot initiatives likely to succeed in at least five states, including California. As usual, politicians – including some presidential candidates – are trying to turn back the tide by spreading fear that weed is a gateway to more dangerous drugs. But research increasingly shows not only that the "gateway" theory is incorrect, but that weed may actually help people with addictions stop taking other drugs, rather than start.