The more you know, the safer the choices you can make. E cigarettes and vape pens are not harmless. Many contain nicotine and other chemicals that can impact brain development, lung health, Vaping vs. smoking: what are the risks? Pacific Life Re Randomized clinical studies assessing the pharmacokinetics and subjective effects of vuse alto electronic nicotine delivery systems Scientific Reports Evidence update on the cancer risk of vaping e cigarettes: A systematic review