The vast majority of youth e-cigarette users consume flavored e-cigarettes, raising concerns from public health … sweeping bans on flavored e-cigarettes. In this study, we examine the effects of these comprehensive bans on e-cigarette use … their use of the banned flavored e-cigarettes as well as their overall e-cigarette use, by about two percentage points …

presents the first regression discontinuity evidence on the effectiveness of e-cigarette MLPA laws. Using data on 12th graders … from Monitoring the Future, we obtain robust evidence that federal and state age-18 MLPAs decreased underage e-cigarette … use by 15-20% and frequent use by 20-40%. These findings suggest that the age-21 federal MLPA could meaningfully reduce e-cigarette …

tobacco use. We find that ENDS taxes reduce youth e-cigarette consumption, with estimated e-cigarette tax elasticities of -0 ….06 to -0.21. However, we estimate sizable positive cigarette cross-tax elasticities, suggesting economic substitution … between cigarettes and e-cigarettes for youth. These substitution effects are particularly large for frequent cigarette …