18.7 Effects of e cigarette use on smoking Tobacco in Australia WHO estimates at least 15 million teenagers use e cigarettes worldwide Reuters PDF) Prevalence of E Cigarette Use and Its Associated Factors Among Youths Aged 12 to 16 Years in 68 Countries and Territories: Global Youth Tobacco Survey, 20122019 E cigarettes: The Technology, the Market, and the Practice of Vaping Springer Nature Link The Royal College of Physicians (RCP) concluded in its report, E cigarettes and harm reduction: An evidence review, that these devices play a crucial role in lowering health inequalities and deaths linked to E cigarettes help smokers quit, Cochrane review confirms The BMJ