How does e cigarette vapor alter the gut microbiome, body weight, and systemic inflammation levels? Study finds surprising new link between vaping and cancer The Brighter Side of News Vaping not prior smoking is associated with changes in gene regulation linked to disease Electronic Cigarettes Induce Mitochondrial DNA Damage and Trigger TLR9 (Toll Like Receptor 9) Mediated Atherosclerosis Arteriosclerosis, Thrombosis, and Vascular Biology