Association between electronic cigarette use and marijuana use among adolescents and young adults: A systematic review and meta-analysis
Chadi N, Schroeder R, Jensen JW, Levy S. JAMA Pediatr. Published online October 01, 2019173(10):e192574. doi:10.1001/jamapediatrics.2019.2574
Despite evidence that e-cigarettes can help smokers quit, this systematic review finds that adolescents aged 12-17 who use e-cigarettes are 3.5 times more likely to use marijuana, suggesting that e-cigarettes may provide a ‘gateway’ to further substance use.