At the same time, the increasing price and taxes, along with the negative perception of cigarettes have at least partially contributed to the decline in cigarette use, said Lloyd Johnston, principal investigator of the study.
Overall, the study also found that 39 percent of students used any illicit drug, including marijuana, in the past 12 months. That figure for 2014 is down from 41 percent in 2013, but rose from 34 percent in 2006. The seven-year increase was driven mostly by the increase in marijuana use.
The data are part of a series of national surveys of U.S. college students conducted as part of the University of Michigan’s Monitoring the Future study. The annual study, conducted with funding from the National Institute on Drug Abuse, has reported on college students’ substance use for 35 years.