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 Lung cancer risks persist with e cigarette use after quitting tobacco smoking New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking 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