Billings doctor outlines effect of vaping on lungs Health experts warn that flavored e cigarettes may lead to permanent lung damage. A U.S. teenager was diagnosed with "popcorn lung" after covertly vaping for three years, resulting in a lifelong, debilitating condition. E Cigarettes, Vaping & Lung Health Pulmonary & Respiratory Care Loma Linda University Health COPD and Vaping: Understanding the Risks and Long Term Effects What Does Vaping Do to Your Lungs? Vaping Gacovino & Lake Lung Damage From Vaping Resembles Chemical Burns, Report Says The New York Times