Predicting the pulmonary effects of long term e cigarette use: are the clouds clearing? European Respiratory Society Smoking: Effects, Risks, Diseases, Quitting & Solutions What Happens When You Quit Smoking and Start Vaping? The evidence is clear: Young E cigarette users suffer from respiratory symptoms American Lung Association Health Effects of Vaping Smoking and Tobacco Use CDC The impact of e cigarette exposure on different organ systems: A review of recent evidence and future perspectives ScienceDirect