Health effects and known pathology associated with the use of E cigarettes ScienceDirect Analysis suggests e cigarette use may be linked to lower rates of 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 Your Body Immediately After Vaping an E Cigarette Vaping Risks and Dangers During COVID Clinical Impact of Vaping