E cigarette taxes reduce vaping without increasing adult smoking, new study finds Israel bans Juul e cigarettes citing 'grave' public health risk Reuters 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 Juul to pull popular fruity e cigarette flavors in bid to curb teen use Vaping The Guardian