Vaping Causes Lung And Oral Cancer, Over 100 Studies Across The World Analysed WION YouTube E Cigarettes and Vaping OHSU The research looked at the chemical composition of "vape smoke" and assessed its cancer risk using data from published animal studies. Read more 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, Vaping likely to cause lung and oral cancer, Australian researchers find in new review of evidence Vaping The Guardian Vaping and smoking together increases lung cancer risk fourfold