Toxicological Effects of E Cigarettes on Cells, Animals, and Humans and Mechanisms of Toxicity Springer Nature Link More cancer causing chemicals found in electronic cigarettes The Verge Chemicals E cigarettes are not a healthier alternative to cigarettes. They contain nicotine and many harmful ingredients that can cause cancer and heart disease. Since these products are relatively new, we don't know all What chemicals are in a cigarette? What does smoking do to your body? Cancer Research UK