Johns Hopkins All Children's Hospital Adolescent and Young Adult Specialty Clinic

Dangers of Vaping

In 2016, more than 2 million U.S. middle and high school students used e-cigarettes in the past 30 days.

What is Vaping?

Vaping is inhaling and exhaling a vapor produced by an electronic cigarette or similar device. Vape pens have a container of liquid that is a mixture of flavoring, nicotine and other chemicals. The liquid solution is heated into a water vapor/mist that the user then breathes in.

Vape products can also be called:

  • E-cigarettes, e-pipes, e-hookahs, e-cigars
  • JUULs (pronounced “jewels”)
  • Personal vaporizers/vape pens

Vape products can look like:

  • Traditional tobacco products such as cigarettes, cigars, and pipes
  • Common items such as flash drives and pens

 The Facts of Vaping

  • Vaping is not harmless.
  • Vaping aerosol is not just “water vapor.”
  • Vaping products are the most commonly used tobacco products among teens.
  • Nicotine is very addictive and can harm the brain, especially in children and teens.
  • The other chemicals in vape products can be dangerous.

For more information, ask your doctor about the dangerous effects of vaping and how to quit.

Dangers of Vaping

Vape liquids can come in many sweet and fruity flavors making them popular among teens and young adults. The liquid in vape products can also contain harmful substances like anti-freeze, heavy metals and cancer-causing agents.

  • 1 in 4 high school students in the U.S. reported using vape products
  • Teens who use vape are more likely to use cigarettes or other tobacco products
  • Chemicals in vape liquid may lead to lung disease and cancer
  • Vape products have exploded causing serious injuries, burns, and fires

Many vape products contain nicotine which can be harmful. The nicotine in vape products is highly addictive. It can harm the brain and affect attention and learning.

For More Information Visit

Contact Us and Meet Our Team

Our adolescent medicine team has special training to meet the unique needs of teens. We're here to help guide you and answer any questions you might have.

Give us a call

Call 727-767-8336

Phone Icon Dark Blue

Our team of experts

Meet Our Team

Team Icon Blue

The information here is not intended to be nor should be used as a substitute for medical evaluation or treatment by a health care professional. This publication is for information purposes only and the reader assumes all associated risks.

Content experts: Neha Manikonda, M.D., Nicole Neveln, M.D., and Jasmine Reese, M.D., M.P.H.


  • American Academy of Pediatrics
  • Centers for Disease Control and Prevention
  • National Institute on Drug Abuse
  • U.S. Food & Drug Administration