Vaping and smoking together increases lung cancer risk fourfold 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 and Cancer: A Wake Up Call We Can't Ignore TOGA Thoracic Oncology Group Australasia E Cigarette Research for Lung Cancer Patients Roy Castle New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking