E cigarettes: 'cancer risk close to zero' Bhekisisa Vaping is widespread among high school students and young adults, yet researchers are still uncovering its long term health effects. While lung cancer is a major concern, the dangers of vaping go Comparing the cancer potencies of emissions from vapourised nicotine products including e cigarettes with those of tobacco smoke Tobacco Control Smoking Related Disease Risk Reduction Potential of ENDPs ScienceDirect