E cigarettes are more harmful smokers Emerging medical research continues to examine the respiratory risks associated with flavored e cigarettes, including concerns about bronchiolitis obliteransoften referred to as popcorn lung. The condition involves inflammation and scarring of the Electronic cigarettes and cardiovascular disease: epidemiological and biological links Pflgers Archiv European Journal of Physiology Springer Nature Link How does e cigarette vapor alter the gut microbiome, body weight, and systemic inflammation levels? Effects of ecigarettes and vaping devices on cardiac and pulmonary physiology Tsai 2020 The Journal of Physiology Wiley Online Library Exposure to Electronic Cigarettes Impairs Pulmonary Anti Bacterial and Anti Viral Defenses in a Mouse Model PLOS One