E cigarettes found to cause change in mouth bacteria which could lead to gum disease or oral cancer Tobacco is the Leading Cause of Oral Cancer! Did you know? Nearly 75%90% of oral cancer cases are linked to smoking or chewing tobacco. Your health is in your hands Scientific review finds e cigarettes likely cause lung and oral cancer Los Angeles Times e Cigarettes Affect Oral Health and Ways to Minimise the Side Effects E cigarettes Cancer Council NSW