Frontiers Hepatic DNA Damage Induced by Electronic Cigarette Exposure Is Associated With the Modulation of NAD+ PARP1 SIRT1 Axis Down a Path of Epigenetic Destruction: Smoking Cigarettes Adjusts Critical Marks on DNA What is Epigenetics? A major new review of more than 100 scientific studies is raising serious concerns about vaping. Researchers found growing evidence that e cigarettes are likely linked to lung and oral cancers, along with A major new review of more than 100 scientific studies is raising serious concerns about vaping. Researchers found growing evidence that e cigarettes are likely linked to lung and oral cancers, along with