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People who smoke high-intensity pot every day more likely to develop psychosis: study

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Individuals who smoke high-potency marijuana every day are more likely to develop psychosis, according to a new study.

The study published Tuesday in The Lancet Psychiatry medical journal found that daily marijuana users are three times more likely than those who don’t use marijuana to develop psychosis. Those who use high-potency marijuana are almost five times more likely to develop psychosis compared to nonusers, according to the study.

{mosads}The study’s authors defined high-potency cannabis as marijuana with more than 10 percent tetrahydrocannabinol, the chemical responsible for marijuana’s psychoactive effects.

The researchers studied data from 901 patients with first-episode psychosis between 2010 and 2015. They also studied 1,237 people as a control group.

The study is the latest to show a link between marijuana and psychosis, though it did not definitively show causation.

“If you decide to use high-potency marijuana, you should bear in mind: Psychosis is a potential risk,” Marta Di Forti of King’s College London and the lead author of the study told The Associated Press

The study also showed that cities with easily accessible high-potency marijuana, such as Amsterdam, have higher rates of new cases of psychosis than other cities.

 

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