What Is Nicotine & How It Benefits People? [A highly ignored subject] what is in vape juice The FDA doesn't know if flavored vaping chemicals are safe to breathe Salon.com Don't let the stylish designs and sweet flavors fool you; vaping can significantly increase your risk for serious respiratory and cardiovascular diseases, including: Chronic obstructive pulmonary disease Heart attacks and 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. The Chemistry of Vaping ChemistryViews