NHS Health Scotland: E cigs 'definitely' less harmful than smoking Is Vaping Worse Than Smoking? A Clear Look at the Differences Pod Salt UK Study Finds Increase in Number of U.S. Adults Who Perceive E cigarettes More Harmful than Traditional Cigarettes Georgia State University News Faculty, Press Releases, Research, School of Public Health, University Research New study finds e cigarettes could release 15 times more formaldehyde than tobacco Research & Commentary: Despite Scientific Evidence, More Americans Believe E Cigarettes Are as Harmful as Tobacco Cigarettes The Heartland Institute