E Cigarette Research, Studies & Reports (Updated 2019) E cigarettes increase harm to smokers, so should not be promoted as a harm reduction strategy (in 10 slides) Stanton Glantz blog An Umbrella Review of E Cigarettes' Impact on Oral Microbiota and Biofilm Buildup The Royal College of Physicians (RCP) concluded in its report, E cigarettes and harm reduction: An evidence review, that these devices play a crucial role in lowering health inequalities and deaths linked to