States where recreational marijuana legalized see increased problematic use

Researchers looking at data on cannabis use between 2008 and 2016 found that rates of problematic use among teens and adults over age 26 rose faster in states where recreational marijuana had been legalized than in other states, according to the report published in JAMA Psychiatry."Other studies have looked at the effect of medical marijuana legalization," said the study's lead author Magdalena Cerda, an associate professor in the department of population health and director of the Center for Op