Original Investigation

State E-Cigarette Flavor Restrictions and Tobacco Product Use in Youths and Adults

JAMA Network Open 10.1001/jamanetworkopen.2025.24184

July 30, 2025 at 11:00 AM EDT

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Are statewide e-cigarette flavor restriction policies associated with e-cigarette and cigarette use among different age groups?In this cross-sectional study of 2019-2023 survey data on US high school-aged youths, young adults (ages 18-24 years), and adults ages 25 years or older, flavor policies were associated with reduced e-cigarette use among young adults and adults aged 25 years or older and increased cigarette use among youths and young adults, although results varied by state and year.This study found that flavor policies were associated with reductions in e-cigarette use and unintended increases in cigarette use, highlighting a need for future work on evaluating substitution effects and prevention of youth tobacco use.

Corresponding Author: Douglas E. Levy, PhD, Mongan Institute Health Policy Research Center, Massachusetts General Hospital, 100 Cambridge St, Ste 1600, Boston, MA 02114 (dlevy3@mgh.harvard.edu).

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