Vaping Student Health & Well Being Study finds lung cancer in mice exposed to nicotine vaping 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 E cigarette flavored pods induce inflammation, epithelial barrier dysfunction, and DNA damage in lung epithelial cells and monocytes Scientific Reports The Medical Minute: Hazards of juuling or vaping Penn State Health News