Most smokers now wrongly believe vaping is more dangerous than cigarettes Clearing the Air WHO Study finds e cigarettes ineffective in quitting smoking Elets eHealth Estimation of the global number of e cigarette users in 2020 Harm Reduction Journal Springer Nature Link Share of adults who smoke or use tobacco Our World in Data 5 Vaping Facts You Need to Know Johns Hopkins Medicine Despite Claims, Real World Evidence Shows E Cigarettes Not an Effective Smoking Cessation Aid Public Citizen