Can Vaping Cause Lung Cancer? Here's What We Know. Does Vaping Cause Oral Cancer? Portland Perio Implant Center New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking Australian researchers have issued one of the strongest warnings yet about vaping, saying a major review of evidence suggests e cigarettes are likely to cause lung and oral cancer. The review found signs Vaping harms your health Cancer Institute NSW