Teen Smoking UT MD Anderson Vaping and Electronic Cigarette Toxicity Overview and Recommendations (Project VECTOR) Intrepid Lab Get The Facts Global Action to End Smoking 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 Vaping and E Cigarettes Causing Outbreak of Respiratory Illnesses, Other Severe Health Problems, and Deaths Sommers Schwartz