Health effects and known pathology associated with the use of E cigarettes ScienceDirect Flavored e cigarettes are now being linked to permanent lung damage and doctors are already seeing the consequences. In the United States, doctors recently documented a teenager who developed popcorn lung The Hidden Dangers: E Cigarettes, Heated Tobacco, and Their Impact on Oxidative Stress and AtherosclerosisA Systematic Review and Narrative Synthesis of the Evidence Addressing e cigarette misperceptions School of Psychological Science University of Bristol