Am I vaping too much? : r Vaping How Do Vapes Work? Behind The Haze MO Nicotine, propylene glycol, sweet flavorings, and various toxic chemicals like carcinogens and heavy metals are found in vape juice, posing health risks, especially to youth. How Harmful is Vaping? CNM Ireland College of Naturopathic Medicine A leading provider of a range of natural health training courses The Danger of Chemicals Used in Vape Liquid The Science Blog All E Cigarettes Emit Harmful Chemicals, but Some Emit More Than Others Berkeley Lab Berkeley Lab News Center