Vaping Nicotine = Brain Poison for Teens E Cigarettes and Vaping OHSU Vaping among teens declines, but health risks and addiction remain a concern News Most vapes contain dangerous chemicals that can harm your lungs, heart and brain, but did you know that the very act of vaping and sucking in air could in itself lead to New study shows many young oral nicotine pouch users also smoke and vape Vaping Related Illness and Lung Disease NEJM