In the Western world, COPD is mainly related to cigarette smoking. The Download Scientific Diagram Will chronic e cigarette use cause lung disease? Thoracic and Sleep Group Queensland Smoking slowly damages your lungs, often without clear symptoms at first. Every cigarette releases thousands of toxic chemicals that enter your airways and lungs. Over time, this damage becomes serious and sometimes COPD: Symptoms, Causes & Treatment Alpine BioMedical Association of electronic cigarette use and risk of COPD: a systematic review and meta analysis npj Primary Care Respiratory Medicine