New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking Lung cancer risks persist with e cigarette use after quitting tobacco smoking New Study Challenges Claims About E cigarette Risks: A closer look at the data identifies vaping has similar risk reductions for heart attacks, strokes and COPD as quitting smoking without using any alternative. E Cigarettes Are Safer, but Not Exactly Safe The New York Times A systematic review on risk factors and reasons for e cigarette use in adolescents