The evidence is clear: Young E cigarette users suffer from respiratory symptoms American Lung Association E Cigarettes, Vaping & Lung Health Pulmonary & Respiratory Care Loma Linda University Health Vaping May Increase the Risk of Chronic Respiratory Disease Scientific American E cigarettes contain hazardous substances, addictive and harmful COPD and Vaping: Understanding the Risks and Long Term Effects Long term use of e cigarettes linked to increased risk of respiratory disease : r science