Study: Colorado has 2nd most pot users in U.S.

Photo: Marijuana plants growing in tubs at a greenhouse in Colorado Springs, worker in background
In this Feb. 7, 2014 file photo, a worker cultivates a special strain of medical marijuana known as Charlotte's Web inside a greenhouse, in a remote spot in the mountains west of Colorado Springs, Colorado.

A national study says Colorado had the second-highest number of regular marijuana users as the state began legalizing the drug.

The Denver Post reported that the study by the National Survey on Drug Use and Health found about 1 out of 8 Colorado residents older than 12 had used marijuana in the past month. The study says only Rhode Island topped Colorado in the percentage of residents who reported using pot as often.