FDA warns Juul, says it marketed vapes as less harmful than regular cigarettes without agency authorization The Washington Post F.D.A. Approves Juul Vapes After Yearslong Delay The New York Times Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center The rise of teen vaping is worrying doctors worldwide. While e cigarettes were once marketed as a safer alternative, research shows they contain nicotine, heavy metals, and cancer causing chemicals that can damage developing