Levels of first-time marijuana use in college have increased sharply in the past three years to the highest levels recorded in the past three decades. In 2015, about one in five college students became a first-time marijuana user.
These results come from the annual Monitoring the Future study, which has been tracking substance use among young adults for the past 36 years. It is conducted by a team of researchers at the University of Michigan and is funded by the National Institute on Drug Abuse. Results are based on young adults ages 19-22.
Increasing levels of first-time marijuana use among young adults have been concentrated among college students, and no increases have been seen among their age peers not in college. As a consequence, levels of first-time marijuana use have become increasingly higher for college students as compared to their peers not in college: by about 51 percent in 2015, which compares to 41 percent in…