News Release 

Marijuana use in e-cigarettes increases among US students 2017-2018

JAMA

Bottom Line: Marijuana use in electronic cigarettes increased among U.S. middle and high school students from 2017 to 2018. This observational study analyzed responses from 38,000 students in the sixth to 12th grades on the National Youth Tobacco Survey. Researchers report that among all students, the proportion who reported ever using marijuana in an e-cigarette increased from 11.1% in 2017 to 14.7% in 2018, with the increases seen among some demographic groups, including male and female students, adolescents 13 to 17, high-schoolers, and non-Hispanic white and Hispanic students. In 2018, 42.7% of students who ever used e-cigarettes, 53.5% of current e-cigarette users, and 71.6% of multiple tobacco product users reported ever using marijuana in e-cigarettes. A limitation of the study is that the information was self-reported. Studies about the short- and long-term health effects of using marijuana in e-cigarettes are needed.

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Author: Hongying Dai, Ph.D., University of Nebraska Medical Center, Omaha

(doi:10.1001/jama.2019.19571)

Editor's Note: The article includes funding/support disclosures. Please see the article for additional information, including author contributions and affiliations, financial disclosures, funding and support, etc.

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Media advisory: To contact corresponding author Hongying Dai, Ph.D., email Vicky Cerino at vcerino@unmc.edu. The full study is linked to this news release.

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