Vaping is especially harmful to individuals under the age of 25, as their brains are not yet fully developed. The chemicals found in vapes can cause problems with memory and retaining information, Scripps Health E cigarettes remain the most commonly used tobacco product among middle and high school students in the United States, according to the Instagram High concentrations of flavor chemicals are present in electronic cigarette refill fluids Scientific Reports E Cigarettes & Vaping, Chemical Safety Chemical Insights Teen Health Info : Vaping everything you need to know It's Not Just Cigarettes: Vape Residue Sticks on Surfaces Too Thirdhand Smoke Resource Center