COPD Symptoms and causes Mayo Clinic The Difference Between Asthma And COPD Pulmonary Associates of Brandon A new study published in Nicotine & Tobacco Research found that those using e cigarettes alone were more than twice as likely to develop COPD than people who didn't use any tobacco products, Cannabis for Treating Chronic Obstructive Pulmonary Disease Marijuana Doctors The Role of Smoking in Asthma and Chronic Obstructive Pulmonary Disease Overlap Immunology and Allergy Clinics E cigarette use increases risk for developing major respiratory diseases