Studies suggest e-cigarettes are far less harmful than tobacco cigarettes.Below you can find links to published studies and data. E-cigarettes are 95% less harmful than tobacco smoke - Public Health England, 2015 & 2018Link to PHE 2015 StudyLink to PHE 2018 UpdateE-cigarettes are 99% less carcinogenic than tobacco smoke - Stephens et. al, BMJ Journals 2017Link to 2017 StudyFlavors in e-cigarettes are not harmful to blood vessels and the heart - Wölkart et al., Plos One 2019Link to 2019 ResearchHealth impact of e-cigarettes: a prospective 3.5-year study of regular daily users who have never smoked - Polosa et al., Nature 2017Link to 2017 ResearchPassive vapor does not contain elevated concentrations of formaldehyde or acetaldehyde - Johnson et al., PubMed 2018Link to 2018 Study of air monitoring at large public electronic cigarette eventsLink to 2018 Study of formaldehyde in the indoor environment