While vaping is not risk free, it is less harmful than tobacco Our World in Data Evidence update on e cigarette dependence: A systematic review and meta analysis ScienceDirect Adolescents' Use of Pod Mod E Cigarettes Urgent Concerns New England Journal of Medicine Plain language summary of meta analysis of ecigs and disease available Stanton Glantz blog That big claim that vaping leads to smoking may be based on insubstantial evidence Scaremongering about e cigarettes is not in the best interest of patients The Pharmaceutical Journal