About 10 million more Americans smoke marijuana now than 12 years ago, a new study in the British medical journal the Lancet has found.
The study comes as at least five states ready to vote on whether to legalize marijuana for recreational purposes, including California, which is considered a linchpin in the campaign for federal legalization.
“We certainly expected, based on other research, to find an increase” in marijuana use, said said Dr Wilson M Compton, an author of the study and researcher at the National Institute on Drug Abuse. “It’s well known in the US that the laws related to marijuana have been changing; we’ve seen a number of states passing laws to allow marijuana for medical purposes.”
The study used data from 596,500 adults surveyed between 2002 and 2014 for the US National Survey on Drug Use and Health to reach its conclusions about how many Americans use