Health experts warn that flavored e cigarettes may lead to permanent lung damage. A U.S. teenager was diagnosed with "popcorn lung" after covertly vaping for three years, resulting in a lifelong, debilitating condition. Health Effects Vaping Information, Solutions & Interventions Toolkit Stanford Medicine Global youth vaping and respiratory health: epidemiology, interventions, and policies npj Primary Care Respiratory Medicine How Big Tobacco is Hooking Gen Z Respiratory Health Association