Colorado study underlines dangers of edible marijuana

WASHINGTON, United States -- The number of emergency-room visits linked to cannabis in one hospital in the first US state to completely legalize its use tripled within a few years, according to a study that points to the dangers of ingesting the drug. Colorado legalized marijuana for recreational use in 2014, the first state to do so, making the study published Monday in the Annals of Internal Medicine particularly noteworthy. Nine other states have now legalized cannabis for recreational use, while 34 of the 50 allow its medical use. Researchers analyzed a half-million emergency-department visits at the University of Colorado hospital in Aurora from 2012 to 2016, of which roug...

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