If you vape and have heard the term “popcorn lung” mentioned online or in the news, you might be wondering whether it is something to be concerned about. The idea that vaping could cause permanent lung damage is understandably worrying, but the facts are often misunderstood.
In this article, we explain what popcorn lung is, how it became linked to vaping, and what the current situation is in the UK.
What is popcorn lung?
Popcorn lung is the nickname for a rare lung condition called bronchiolitis obliterans. It causes scarring and narrowing of the smallest airways in the lungs, making it difficult to breathe. Symptoms can include:
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Persistent dry cough
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Shortness of breath
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Wheezing
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Chest discomfort
The name “popcorn lung” came from a group of workers in a US popcorn factory who developed the condition after being exposed to high levels of a chemical called diacetyl. This was used to create a buttery flavouring in microwave popcorn.
Why is vaping linked to popcorn lung?
Years ago, some e-liquid flavourings were found to contain diacetyl. This raised concerns that inhaling diacetyl through vapour could lead to similar lung problems, especially with repeated use.
However, the vaping industry has changed a lot since then. In the UK and across Europe, diacetyl is banned from use in e-liquids under the Tobacco and Related Products Regulations (TRPR). This means that legally sold vape products in the UK should not contain diacetyl at all.
Do UK vapes contain diacetyl?
No, they should not. All e-liquids sold in the UK must meet strict safety standards. The use of diacetyl and other similar compounds is not allowed. Devices like the Lost Mary BM6000 are sold legally in the UK and use regulated e-liquid formulas that comply with current safety rules.
As long as you are buying your vape products from a reputable UK retailer, you should not be exposed to diacetyl or other banned substances linked to popcorn lung.
Have there been any confirmed cases?
There have been no confirmed cases of popcorn lung caused by vaping in the UK. Most of the concern around this condition dates back to early American reports where unregulated products were used. In some cases, the products were homemade or bought from unofficial sources, which increased the risk of harmful exposure.
The term still gets mentioned online, but the actual risk in regulated markets like the UK is considered very low.
Could vaping still affect your lungs?
While popcorn lung is unlikely, vaping is not entirely risk-free. Inhaling anything other than clean air can affect your lungs to some degree. Vapour can cause dryness, mild irritation or coughing in some users, especially if you have asthma or other respiratory conditions.
If you ever feel short of breath, tight in the chest or notice a lingering cough, take a break and speak to a healthcare provider. These symptoms are usually mild, but it is always worth checking.
How to reduce the risk
To lower the chance of any vaping-related issues, here are a few simple steps:
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Only use products from reputable UK retailers
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Avoid high heat or long puffs that may overheat the coil
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Stay hydrated to support your lungs and throat
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Use the lowest nicotine strength that satisfies your cravings
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Take regular breaks if you vape frequently
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Speak to your doctor if you have any ongoing lung symptoms
You can also read product labels or visit the manufacturer’s website to check for compliance with UK regulations. If a product does not list ingredients or feels harsh, it may be best to avoid it.
Want to learn more about vaping safety?
Our full health guides section covers a wide range of topics including lung health, dry mouth, breathing, oral care and more. All articles are written with UK users in mind and give honest, easy-to-understand answers to common concerns.
Final thoughts
Popcorn lung is a serious but rare condition that was linked to one specific chemical, diacetyl, which is now banned in all legally sold UK vape products. As long as you are using regulated e-liquids and devices from trusted retailers, the risk of developing popcorn lung from vaping is extremely low.
If you are switching from smoking to vaping, you are already making a decision that could reduce your risk of long-term lung damage. Just be sure to stay informed, buy responsibly and look after your lung health.
Confused about what vaping does to your breathing? Read what does vaping do to your lungs for a breakdown.
If you’re worried about cancer links, check can vaping cause lung cancer.