E Cigarettes and Vaping OHSU Does vaping cause lung cancer? Healthy You Scientists Warn: Vaping Likely Causes Cancer Teens inhale cancer causing chemicals in e cigarettes Many people believe that vaping is less harmful than smoking, but that's a common misconception. In fact, in addition to nicotine, vapes can contain toxic chemicals that could be linked to cancer, The research looked at the chemical composition of "vape smoke" and assessed its cancer risk using data from published animal studies. Read more