By Dr. Liji Thomas, MD Reviewed by Lauren Hardaker Jun 4 2026 Not all vaping exposures are the same: researchers reveal that device generation, flavor choices, and vaping intensity each leave distinct molecular fingerprints in the mouth's cells, offering new clues about the biological effects of e-cigarette use. Study: Multidimensional exposure architecture shapes vaping-associated transcriptomic dysregulation in oral epithelium. Image credit: Pupsiki/Shutterstock.com A recent study published