La cigarette lectronique rduit drastiquement l'exposition aux toxiques du tabac Observatoire de la prvention de l'Institut de Cardiologie de Montral Health effects of electronic cigarettes Wikipedia A systematic review and meta analysis of the association between e cigarette use among non tobacco users and initiating smoking of combustible cigarettes Harm Reduction Journal Springer Nature Link Trans ancestry epigenome wide association meta analysis of DNA methylation with lifetime cannabis use Molecular Psychiatry The impact of e cigarette use on periodontal health: a systematic review and meta analysis Evidence Based Dentistry While vaping is not risk free, it is less harmful than tobacco Our World in Data