Put Down the Vape: Even Tobacco Free E Cigarettes Might Damage DNA What chemicals are in a cigarette? What does smoking do to your body? Cancer Research UK Health effects of electronic cigarettes Wikipedia Toxic Metals in E cigarettes Lead to Oxidative DNA Damage StressMarq Evaluation of DNA damage through cytogenetic approach in smokers and vapers with and without nicotine compared with control group Bionatura journal 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