Prevalence of high school seniors' marijuana use is expected to increase with legalization

Large proportions of high school students normally at low risk for marijuana use (e.g., non-cigarette-smokers, religious students, those with friends who disapprove of use) reported intention to use marijuana if it were legal, a new study reports. National support for marijuana legalization is increasing in the United States. Recreational use was recently legalized in the states of Colorado and Washington; other states across the country are expected to follow suit. To date, an additional 15 sta...