The current scientific consensus is that e-cigarettes, although they may still have some risks, are far less harmful than conventional cigarettes. "This system

The current scientific consensus is that e-cigarettes, although they may still have some risks, are far less harmful than conventional cigarettes. "This systematic review appraises existing laboratory and clinical research on the potential risks from electronic cigarette use, compared with the well-established devastating effects of smoking tobacco cigarettes. Currently available evidence indicates that electronic cigarettes are by far a less harmful alternative to smoking and significant health benefits are expected in smokers who switch from tobacco to electronic cigarettes." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4110871/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4110871/