“…First, teenage smoking is particularly sensitive to cigarette taxes, especially among the cohorts for whom we can observe mortality (Carpenter and Cook 2008;Lillard et al 2013;Hansen et al 2017). 1 Second, most smokers take up the habit before reaching the age of 20 (Lillard et al 2013;Holford et al 2014), and teenage smoking is strongly correlated with smoking later in life (Chassin et al 1996;Gruber 2001;Glied 2002; 1 A large literature provides evidence that, while cigarette taxes in adulthood reduce adult smoking, the magnitude of this effect is small, with most studies producing elasticities in the range of -0.1 to -0.3 (DeCicca and McLeod 2008;Callison and Kaestner 2014;DeCicca et al 2020). Gilleskie and Strumpf 2005), suggesting that cigarette taxes experienced as a teenager are a plausibly exogenous source of variation in lifetime smoking.…”