Juul Vape Settlement Does JUUL Cause Lung Cancer? Can vaping cause cancer? The evidence suggests it might. An oncologist shares what he tells people when they ask about vapes and cancer risk. Vaping can cause cancer, say researchers but still isn't as damaging as smoking cigarettes. More than 5.5 million Britons currently use e cigarettes, which have long been viewed as a safer alternative Can Vaping Cause Lung Cancer? Here's What We Know.