Youth past month marijuana use in Colorado increased 20 percent compared to the two year average prior to legalization according to a new report: "The Legalization of Marijuana in Colorado: The Impact."
Nationally youth past month marijuana use declined 4 percent during the same time.
Colorado youth ranked #1 in the nation for past month marijuana use.
The Colorado law passed two years ago permits adults 21 years of age or older to posses one ounce of marijuana or THC.
Link to report: http://www.rmhidta.org/html/FINAL%20NSDUH%20Results-%20Jan%202016%20Release.pdf