Cannabis consumption increases violent behaviour in young people in psychiatric care

(University of Montreal) A new study on cannabis use that involved 1,136 patients (from 18 to 40 years of age) with mental illnesses who had been seen five times during the year after discharge from a psychiatric hospital demonstrates that sustained used of cannabis is associated with an increase in violent behaviour in young people. Moreover, the association between persistent cannabis use and violence is stronger than that associated with alcohol or cocaine.