LONDON — Smoking high-potency marijuana every day could increase the chances of developing psychosis by nearly five times, according to the biggest-ever study to examine the impact of pot on psychotic disorder rates.
Psychotic disorders — in which people lose touch with reality — are typically triggered by factors including genetics and the environment. But experts say the new study’s findings have implications for jurisdictions legalizing marijuana, warning they should consider the potential impact on their mental health services.
Researchers at King’s College London and elsewhere analyzed data from a dozen sites across Europe and Brazil from 2010 to 2015. About 900 people who were diagnosed with a first episode of the disorder at a mental health clinic, including those with delusions and hallucinations, were compared with more than 1,200 healthy patients.
“If you decide to use high-potency marijuana, you should bear in mind: Psychosis is a potential risk,” said Dr. Marta Di Forti, of King’s College London and the study’s lead author. She said it was unknown how frequently people could smoke lower-potency marijuana without raising their likelihood of psychosis, but that less than weekly use appeared to pose no risk.
No freakin' kidding. Are you going to tell us the sky is blue next?
Is psychosis good or bad?
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