Science & health6 min read
How Much Nicotine Is in a Vape? Cigarette Equivalents, Explained
How to work out the nicotine in a disposable, a pod, or a bottle of e-liquid, and roughly how many cigarettes that compares to.
Updated July 26, 2026
Topic hub
Science & health
What the research actually says
Why vaping is addictive, how much nicotine is really in a device, and how the evidence on vaping versus smoking stands today, sourced and stated plainly, without scare tactics.
Pillar guide
Start here
Why Is Vaping So Addictive? The Science, Plainly Explained
A clear, sourced explanation of why vaping is so addictive, how nicotine acts on the brain, why nicotine salts changed the game, and what makes vaping habit-forming beyond the chemistry.
9-minute read
What this hub covers
- Neuroscience
- How nicotine acts on the brain.
- Chemistry
- What is in the vapour and the device.
- Public health
- Comparative risk and evidence reviews.
All guides in this topic
Neuroscience
How nicotine acts on the brain.
Chemistry
What is in the vapour and the device.
Science & health7 min read
Vaping vs Smoking: What the Evidence Actually Says in 2026
Vaping is less harmful than smoking, but 'less harmful' is not 'safe'. What the major reviews conclude, where they disagree, and what it means if you vape but never smoked.
Updated July 26, 2026
Science & health7 min read
Vaping Side Effects: What's Documented and What Improves After You Quit
The short-term effects of vaping that show up in research, cough, throat irritation, sleep, heart rate, dental health, and how quickly each improves after quitting.
Updated July 26, 2026
Science & health7 min read
What the Research Says About Quitting Vaping
The evidence base for quitting vaping: what works, roughly how much, and where the research is still thin. Sourced, with the uncertainty left in.
Updated July 26, 2026
Related glossary terms
Definitions for the vocabulary used across this cluster.
- Nicotine
- Nicotine salts
- Freebase nicotine
- PG (propylene glycol)
- VG (vegetable glycerin)
- Diacetyl
- Formaldehyde
- HPHCs (harmful and potentially harmful constituents)
- mg/mL vs %
- Disposable vape
- nAChR (nicotinic acetylcholine receptor)
- Dopamine
- Mesolimbic pathway
- Receptor upregulation
- Tolerance
- Harm reduction
- Dual use
- EVALI
- Secondhand vapour
- Freebase nicotine
- Ventral tegmental area (VTA)
- Allostasis
- Nicotine dependence
- Tobacco harm reduction (THR)
- Aerosol
- Acetylcholine
Frequently asked
- Is vaping safer than smoking?
- For an established adult smoker who fully switches, vaping is estimated by Public Health England and the Royal College of Physicians at roughly 95% less harmful than continued smoking. For never-smokers, especially teens, the comparison does not apply and the risk-benefit is the other way around.
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