Scripps Health E cigarettes remain the most commonly used tobacco product among middle and high school students in the United States, according to the Instagram Optimising messages and images for e cigarette warnings Tobacco Control Vaping likely to cause lung and oral cancer, Australian researchers find in new review of evidence Vaping The Guardian E cigarette smoke damages DNA and reduces repair activity in mouse lung, heart, and bladder as well as in human lung and bladder cells PNAS