Daily use of high potency marijuana linked to higher rates of psychosis, study finds

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By Shamard Charles, M.D.

Daily cannabis use, especially of the high potency strains, is linked to an increased risk of developing psychosis, according to new research released Tuesday.

The European study, which looked at cannabis use in 11 major cities and Brazil, is the first to show the impact of marijuana use on rates of psychosis, a severe mental condition, in large populations. The link with psychosis was strongest in London and Amsterdam where high potency strains — marijuana which contains over 10 percent THC, the psychoactive component of the drug — are highest and most commonly available.

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