College students attending an Oregon university are using more marijuana now that the drug is legal for recreational use, but the increase is largely among students who also report recent heavy use of alcohol, a new study has found.
Oregon State University researchers compared marijuana usage among college students before and after legalization and found that usage increased at several colleges and universities across the nation but it increased more at the Oregon university. None of the universities were identified in the study.
“It does appear that legalization is having an effect on usage, but there is some nuance to the findings that warrant further investigation,” said the study’s lead author, David Kerr, an associate professor in the School of Psychological Science in OSU’s College of Liberal Arts.
“We found that overall, at schools in different parts of the country, there’s been an…