E cigarettes: A win or loss for public health? Knowable Magazine Vaping May Increase Respiratory Disease Risk by More Than 40 Percent SPH A decade ago, the most frequent opinion among smokers was that vaping was less harmful than tobacco. But ten years on, the opposite is true: over a third say that vapes are Who Vapes? Correlates of E Cigarette Use in U.S. College Students Nova Science Publishers E cigarettes may be harmful to health an annotated graphic Engineering & Technology magazine