What COPD Patients Should Know About Vaping and E Cigarettes LPT Medical Vaping May Seem Safer Than Cigarette Smoking, but It Still Raises Lung Disease Risk CoEHAR's study confirms beneficial effects of ecig on copd smokers 5 ways that vaping can damage your body E Cigarette use linked to COPD and hypertension in large study National Emphysema Foundation E cigarettes are Poor Substitutes for Conventional Smoking in COPD Patients