E cigarette vapor linked to cancer in mice National Institutes of Health (NIH) E cigarette or vaping product use associated lung injury in a Download Scientific Diagram Radiologic and Pathologic Correlation in EVALI AJR 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. Question: How do the ingredients in e cigarettes and vaporizers affect respiratory health? Los Angeles ENT Doctors ENT Specialists Top Surgeons