A Új tanulmány published in the Journal of the American Medical Association found that marijuana legalization laws are not associated with increased use amongst high school students.
“Consistent with estimates from prior studies, there was little evidence that [recreational marijuana laws] or [medical marijuana laws] encourage youth marijuana use,” reads the paper.
The study builds upon a previous paper that used data from the Ifjúsági kockázati magatartás felmérés (YRBS) for the period 1993-2017, which found that marijuana adoption was associated with an 8% decrease in the odds of marijuana use among high school students.
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This earlier study used pre-legalization and post-legalization data from only seven states and pre– and post–recreational sales data from only three states. The new study included data from up to 2019, encompassing 10 legal adult-use states.
With these additional data, the study found that “medical marijuana law adoption was associated with a 6% decrease in the odds of current marijuana use and a 7% decrease in the odds of frequent marijuana use.”
When it comes to recreational use, the new study found that prior to legalization, there was no association with marijuana use in the states analyzed. After two or more years, recreational marijuana law adoption was associated with a decrease in marijuana use.
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The study’s authors point out one limitation of this new research: recreational marijuana laws are a relatively new phenomenon.
“As more post-legalization data become available, researchers will be able to draw firmer conclusions about the relationship between [recreational marijuana laws] and adolescent marijuana use,” concluded the authors.
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