E cigarette use to reduce cigarette smoking may not increase nicotine dependence, study suggests Medical Update Online 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 can have serious negative impacts on both your lungs and your overall health. Here are the potential risks that we already know about, even if the vape is nicotine free: An e cigarette is a battery operated device that heats liquid nicotine, flavoring, and other additives to create an aerosol. This JAMA Patient Page describes e cigarettes and the potential health effects of vaping. https: ja.ma 4dbZqrL