Chronic electronic cigarette exposure in mice induces features of COPD in a nicotine dependent manner Thorax Older users of e cigarettes at greater risk of respiratory illness, study suggests CUNY Graduate School of Public Health & Health Policy Comparative study of lung toxicity of E cigarette ingredients to investigate E cigarette or vaping product associated lung injury ScienceDirect Vaping is not harmless. A new study from Johns Hopkins Medicine reveals that e cigarettes significantly increase the risk of COPD and high blood pressure. Our own Dr. Todd Hoopman shares firsthand accounts Are E Cigarettes a Safe Alternative to Smoking? Using Airway Cell Cultures to Assess Early Indicators of COPD Progression Inquiries Journal