PDF) COPD smokers who switched to e cigarettes: health outcomes at 5 year follow up An updated overview of e cigarette impact on human health Respiratory Research Springer Nature Link Proposed mechanisms underlying e Cigarette induced pathogenesis of Download Scientific Diagram Full article: Health impact of e cigarettes and heated tobacco products in chronic obstructive pulmonary disease: current and emerging evidence Smoking cigarettes has long been proven to cause severe lung damage, including chronic obstructive pulmonary disease (COPD), emphysema, and lung cancer. Over time, cigarette smoke destroys lung tissue, fills airways with tar,