Electronic cigarette use and its association with asthma, chronic obstructive pulmonary disease (COPD) and asthma COPD overlap syndrome among never cigarette smokers The Impact of E Cigarettes and Asthma: What You Need to Know Association of electronic cigarette use and risk of COPD: a systematic review and meta analysis npj Primary Care Respiratory Medicine Chronic Obstructive Pulmonary Disease (COPD) Causes, Symptoms & Treatment Smoking poses severe dangers to lung health, including: 1. Lung Cancer Smoking is the leading cause of lung cancer, increasing the risk of developing this deadly disease. 2. Chronic Obstructive Pulmonary Disease ( Elevated risk of developing COPD with e cigarette use: Study