A study of 2.8 million California students indicates that local sales restrictions on flavored products decrease e-cigarette use without shifting adolescents to traditional cigarettes.
RT’s Three Key Takeaways:
- Reduced Vaping Prevalence: Local flavored tobacco bans were associated with a decrease in youth e-cigarette use, with rates at 6.2% in jurisdictions with bans compared to 7.7% in those without.
- No Smoking Increase: The study found no evidence that restricting flavored tobacco products led adolescents to switch to traditional cigarettes, addressing a primary concern in policy debates.
- Long-Term Policy Impact: The findings suggest that the benefits of flavor bans grow over several years as enforcement provisions and community support for the restrictions strengthen.
University of California San Diego researchers found that local sales bans on flavored tobacco in California are associated with reduced youth vaping over time without increasing cigarette smoking, according to a study published in JAMA Health Forum.
The research team analyzed responses from 2,805,708 students in grades 7, 9, and 11 who participated in the California Healthy Kids Survey between 2017 and 2022. The study compared tobacco use among students attending schools in jurisdictions with flavored tobacco bans to those in areas without such policies.
“Our findings suggest that local flavored tobacco bans can be an effective strategy for reducing youth e-cigarette use,” said Eric Leas, PhD, MPH, assistant professor at the UC San Diego Herbert Wertheim School of Public Health and Human Longevity Science, in a news release. “Importantly, we did not find evidence that these policies led young people to switch to cigarettes, which has been a major concern raised in policy debates.”
Impact on Electronic Nicotine Delivery Systems
Electronic nicotine delivery systems (ENDS), commonly known as e-cigarettes or vaping products, are widely used by adolescents in the US. While national data show youth vaping peaked in 2019, frequent use remains common, raising concerns regarding nicotine dependence and long-term respiratory healthcare risks.
One primary driver of youth ENDS use is the availability of fruit, candy, and mint flavors that appeal to young users. In jurisdictions with a flavored tobacco ban, 6.2% of students reported current e-cigarette use, compared with 7.7% in areas without one.
The study found no meaningful association between flavored tobacco bans and traditional cigarette smoking. Cigarette use remained approximately the same in jurisdictions regardless of whether a flavor ban was in place.
Policy Evolution and Enforcement
The researchers used a dynamic difference-in-differences design to account for variations in when different cities adopted bans. This allowed the team to track how outcomes changed over several years rather than relying on a simple before-and-after comparison.
The data suggested that reductions in vaping were often delayed, which may reflect how policies are enforced over time. Many local jurisdictions gradually strengthened rules after initial adoption by expanding definitions of flavored products or adding specific enforcement provisions. Support for these laws also grew after California’s statewide ban took effect in 2023.
“Local policies gave us a valuable window into how flavored tobacco restrictions may influence youth behavior over time,” said Giovanni Appolon, MPH, first author of the study and doctoral candidate in the UC San Diego – San Diego State University Joint Doctoral Program in Public Health, in a news release. “As more jurisdictions adopt these policies, continued monitoring will help determine how enforcement, policy design, and community context shape their public healthcare impact.”
Because California has historically maintained strong tobacco control policies, the authors noted that the magnitude and timing of these effects may differ in regions with different policy environments. Future research is expected to focus on the long-term impact of statewide bans across different communities.
