E cigarettes are likely to cause cancer, including in the lungs and mouth, according to a sweeping review of scientific evidence that challenges their positioning as a safer alternative to smoking. There is Using nicotine based vapes is likely to cause lung and oral cancer, even if e cigarette users do not smoke tobacco, a watershed academic review has found. TUTO VIDO : Comment bien nettoyer son pod ? E cigarettes found to cause change in mouth bacteria which could lead to gum disease or oral cancer