Does Vaping Reduce Lung Cancer Risk? Insights from an Oncologist Dr Saadvik Raghuram E cigarettes: 'cancer risk close to zero' Bhekisisa Vaping and smoking together increases lung cancer risk fourfold Exposure to PM2.5 and E cigarette can potentially put you at greater risk of lung cancer . Both exposure to PM2.5 air pollution and e cigarette use are linked to an increased risk of Dual cigarette and e cig use increases human risk of lung cancer 40 times Stanton Glantz blog