Next steps for research regarding marijuana policy’s effect on alcohol usage

Changes to marijuana policies may extend much deeper than popularly publicized medicinal and economic benefits, according to a new UW study.

Katarina Guttmannova, Ph.D. in experimental and developmental psychology and principal investigator in the Social Development Research Group at the UW, along with fellow researchers and the Center for the Study of Health and Risk Behaviors, recently published a study titled “Impacts of Changing Marijuana Policies on Alcohol Use in the United States.”

The study, published Dec. 21 in the journal Alcoholism: Clinical and Experimental Research, sought to find and analyze previous research studies done in the United States that illustrated correlations between marijuana legalization and alcohol usage.

“One thing that tends to happen is that the media focus on findings from individual studies, without reviewing all the research,” Guttmannova said. “What we need now is scientific evidence from a broad range of carefully conducted studies that examine the effects...

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