strong cannabis linked with quarter of psychosis cases

February 17, 2015 7:56 PM

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As a part of recent study into the psychological consequences of marijuana, a team of researchers in the United Kingdom looked at the details of first-episode psychotic incidents treated at hospitals in South London. They found that roughly 24 percent of the 410 patients treated for a previously undiagnosed psychotic disorder smoked high-potency weed on a daily basis. The results were weighed against a control group of 370 randomly selected South London residents.

"Compared with those who had never tried cannabis, users of high potency 'skunk-like' cannabis had a threefold increase in risk of psychosis," explained lead study author Dr. Marta Di Forti, a professor at the Institute of Psychiatry, Psychology and Neuroscience at King's College London. "The risk t...

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