“…The American Lung Association, for example, tells smokers “Don’t just switch; quit tobacco for good” and highlights a number of concerning facts about e-cigarettes, including that they contain toxic ingredients and produce dangerous chemicals such as acetaldehyde, acrolein, and formaldehyde ( 10 ). In a commentary, Lang and colleagues ( 1 ) argued that an influential claim that e-cigarettes are 95% less harmful than combustible cigarettes “has no scientific validity” (p. 1024) and emphasized that the health effects of e-cigarettes are unknown, citing evidence suggesting a link between e-cigarettes and DNA damage and increased risk of cardiopulmonary disease ( 1 ). Similarly, O’Shea and McElvaney ( 11 ) argued that the “swap to stop” program “means swapping one health risk with another,” pointing to evidence that vaping can induce bronchiolitis and cause cellular changes similar to those produced by smoking.…”