Blog · 7 November 2026

Is Vaping Bad for You? An Honest Answer

Short answer: yes, vaping is bad for you, but how bad depends on what you compare it with. Compared with smoking cigarettes, it's generally considered less harmful. Compared with not vaping at all, it's clearly worse. Both things are true at once, which is why the debate gets confusing.

Vaping compared with smoking

Cigarettes burn tobacco, and that smoke contains thousands of chemicals, many of them known to cause cancer and lung and heart disease. Vapes heat a liquid instead of burning tobacco. Because of that, the UK's NHS says vaping is substantially less harmful than smoking and can help adult smokers quit. That's the "safer" claim you hear about.

But "less harmful than cigarettes" is a very low bar. It doesn't mean safe.

Vaping compared with not vaping

For someone who doesn't smoke, vaping adds risk with no health benefit. The World Health Organization says e-cigarettes are harmful and not safe. Vape aerosol can contain nicotine, fine particles, flavouring chemicals and metals, and the long-term effects of breathing it in for years are still unknown. We go through the details in vaping side effects.

The part people underestimate: addiction

Most vapes contain nicotine, often a lot of it. Nicotine is highly addictive, and vapes make it easy to take a puff every few minutes all day. Many people who started vaping "just socially" find they can't go a morning without it. Addiction has its own costs: anxiety between puffs, money, planning your day around a charger, and the feeling of not being in control. See signs of vaping addiction.

Who should not vape at all

• Children and teenagers: nicotine can affect the developing brain.
• People who don't smoke.
• Pregnant people (talk to a midwife or doctor about the safest way to quit smoking).

Is vaping bad for your lungs?

Vaping can irritate your airways and cause coughing, a sore throat and wheezing for some people. Researchers are still studying longer-term effects on the lungs. If you notice chest pain or trouble breathing, stop and see a doctor.

So what should you do?

• If you smoke: switching completely to vaping is a step in the right direction, according to the NHS. Then aim to quit vaping too.
• If you vape and never smoked: quitting is the best thing you can do. Start with how to quit vaping.
• If you're thinking about starting: don't.

When you're ready to stop, Unvapd, the app we built to help people quit vaping, helps with the hardest part: the craving. Its Panic Button gives you something to do in the minutes a craving lasts, and your vape-free days and money saved add up on your Home screen.

Sources and further help

• WHO: Tobacco and e-cigarettes, questions and answers
• NHS: Using e-cigarettes to stop smoking
• American Lung Association: E-cigarettes and vaping
• FDA: E-cigarettes, vapes and other ENDS

This article is general information, not medical advice. If you have health concerns, or want help with withdrawal or stop-smoking medicines, talk to a doctor, pharmacist or a local stop-smoking service.

Photos: rawpixel, public domain (CC0).