Cannabis and psychosis: what do we know and what should we do?
Marco Colizzi, Robin Murray
The British Journal of Psychiatry | Published : 2018
It is now incontrovertible that heavy use of cannabis increases the risk of psychosis. There is a dose-response relationship and high potency preparations and synthetic cannabinoids carry the greatest risk. It would be wise to await the outcome of the different models of legalisation that are being introduced in North America, before deciding whether or not to follow suit. Declaration of interest None.