A new study in the journal Addiction finds that, after legalization, the use of marijuana among students at an Oregon college increased relative to that of ... read more
And also as noted above, IF you're going to bother picking a single year-to-year bit of data and consider it in the context of more significant actual legalization of marijuana in the U.S., the last two years are particularly important and data in that period could arguably be a better narrow sampling of current trends in use rates due to legalization, and such data shows the exact opposite trend compared to the SAMHSA data. read more
Rates of marijuana use among Colorado's teenagers are essentially unchanged in the years since the state's voters legalized marijuana in 2012, new survey data from the Colorado Department of Public Health and Environment shows. In 2015, 21 percent of Colorado youths had used marijuana in the past 30 days. read more
Post-legalization use rates deviate from this overall trend, but only to a minor degree. The data do not show dramatic changes in use rates corresponding to either the expansion of medical marijuana or legalization. Similarly, cocaine exhibits a mild downward trend over the time period but shows no obvious change after marijuana policy changes. read more