COPD Dove Medical Press Vaping and COPD: Is it okay or can it cause more problems? A new study published in Nicotine & Tobacco Research found that those using e cigarettes alone were more than twice as likely to develop COPD than people who didn't use any tobacco products, The role of cigarette smoke induced pulmonary vascular endothelial cell apoptosis in COPD Respiratory Research Springer Nature Link Potentially Dangerous Modifications to E Cigarettes Common Drugs.com MedNews The Updated Meta Analysis of E Cigs & Health Outcomes: Still Critically Flawed