Vaping, substances, and the impact on teens' mental health Rogers Behavioral Health Vaping lung illness: Harmful chemicals found in e cig flavoring juice 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, All E Cigarettes Emit Harmful Chemicals, but Some Emit More Than Others Berkeley Lab Berkeley Lab News Center