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 Can vaping cause cancer? Risks and more A new research by scientists at the #UNSW in #Sydney has revealed that #nicotine based #vapes, or #ecigarettes, are likely to cause #cancer of the lung and oral cavity. Link in Bio Study finds lung cancer in mice exposed to nicotine vaping E cigarette vapor linked to cancer in mice National Institutes of Health (NIH)