Cannabis became legal for adults 21 and older in Colorado in December 2012, and legal adult marijuana sales began in January 2014.The rate of past-month marijuana use among 12-17-year-olds also dropped in Washington (from 9.17 percent in 2014-2015 to 7.93 percent in 2015-2016), and it is now lower than it was prior to legalization in 2012 (9.45 percent in 2011-2012 and 9.81 percent in 2012-2013). “Colorado is effectively regulating marijuana for adult use,” said Brian Vicente, one of the lead drafters of Amendment 64, co-director of the Campaign to Regulate Marijuana Like Alcohol, and a partner at Vicente Sederberg LLC. “Teen use appears to be dropping now that state and local authorities are overseeing the production and sale of marijuana.”
“There are serious penalties for selling to minors, and regulated cannabis businesses are being vigilant in checking IDs. The days of arresting thousands of adults in order to prevent teens from using marijuana are over.
“These survey results should come as welcome news to anyone who worried teen marijuana use would increase following legalization,” Sederberg said. “As a proponent of Amendment 64 and a parent of two young children, they certainly came as welcome news to me.”