5 ways that vaping can damage your body The evidence is clear: Young E cigarette users suffer from respiratory symptoms American Lung Association Chronic electronic cigarette exposure in mice induces features of COPD in a nicotine dependent manner Thorax The Impact of E Cigarettes and Asthma: What You Need to Know The role of cigarette smoke induced pulmonary vascular endothelial cell apoptosis in COPD Respiratory Research Springer Nature Link