For decades, cannabis has often been seen as one of the safer recreational drugs. It’s apparently impossible to overdose on, significantly less addictive than other common vices, and despite a 1936 nursing journal warning that anybody intoxicated with the stuff would “suddenly turn with murderous violence upon whomever is nearest … run amuck with knife, axe, gun, or anything else,” studies have found that cannabis users actually have a lower risk of domestic violence than those who abstain.
The data comes from a cohort study that started all the way back in 1972, in Dunedin, New Zealand.
Using the Dunedin Study meant that the researchers were able to collect details about the lives of more than 1,000 individuals, all the way from birth to middle age.
Added together, this presents a potentially bleak prognosis for long-term cannabis users.