Do E Cigarettes Cause Cancer? 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 U of M study shows cancer risk in e cigarettes Smoking, vaping called a deadly combination for lung cancer risk UPI.com Misconceptions about e cigarette safety might be stopping smokers using them to quit