Newswise — As of March 2022, 18 states and the District of Columbia allow recreational use of marijuana among adults 21 years and older, and recreational marijuana sales is legal in 14 of these states. A new study of the commercial availability of alcohol and marijuana in California, and the likelihood of alcohol and marijuana co-use among 9th and 11th grade students, has found increased co-use among the general high school population. These results and others will be shared at the 45th annual scientific meeting of the Research Society on Alcoholism (RSA) in Orlando, Florida.
“In November 2016, the voters of California approved adult recreational use of cannabis, which allowed adults aged 21 years or older to possess and use marijuana for recreational purposes,” explained Sharon O’Hara, a postdoctoral research fellow at the Pacific Institute for Research and Evaluation. “We were concerned about the increasing use of marijuana among underage youth, and its use in combination with other substances like alcohol. There is evidence that alcohol and marijuana co-use may increase the risk of adverse outcomes beyond using either substance alone.”
The study focused on not only the effects of the “normalization of marijuana use,” but also the increased commercial and social availability of marijuana at state and local levels. O’Hara and her colleagues will discuss these findings at the RSA meeting on Monday, 27 June 2022.
This study used data from ninth and…