Switching from combustible cigarettes to e cigarettes does not restore the nasal epithelium to that of a non smoker: specifically, the researchers found the epithelium gene expression profiles of EC users do not revert E CIGS :: SNAPS E CIGS :: STARTER KITS ProSmoke Electronic Cigarette Deluxe Starter Kit E Cigarettes and Cardiopulmonary Health: Review for Clinicians Circulation E cigarettes, vaping and public health National Drug Strategy Household Survey 20222023, Tobacco and e cigarettes vapes Australian Institute of Health and Welfare