BERLIN — Society’s embrace of cannabis to treat nausea, pain and other conditions proceeds apace with the drive to legalize the plant for recreational use. Pot’s seemingly innocuous side effects have helped clear a path toward making it a legal cash crop, with all of the marketing glitz brought to other consumer products. But that clean bill of health only goes so far. Marijuana’s potentially detrimental impact on the developing brains of adolescents remains a key focus of research — particularly because of the possibility teenage users could go on to face a higher risk of psychosis.
New findings may fuel those worries. At the World Psychiatric Association’s World Congress in Berlin on October 9, Hannelore Ehrenreich of the Max Planck Institute of Experimental Medicine presented results of a study of