So, e-liquids sold in the UK shouldn’t contain diacetyl.Īnd there have been no confirmed cases of popcorn lung linked to e-cigarettes.Į-cigarettes are a relatively new product – they aren’t risk-free and we don’t yet know their long-term impact. In the UK, diacetyl was banned in e-cigarette liquids under the EU Tobacco Products Directive (TPD) in 2016. This led to the idea that e-cigarettes might cause popcorn lung. Some of the liquids in e-cigarettes used to contain diacetyl. What does the evidence really say about diacetyl and e-cigarettes?

Or after breathing in chemicals that irritate the lungs and cause damage. For example, it can happen after an infection, if it damages the lungs. It was not related to use of e-cigarettes.Īlthough bronchiolitis obliterans is sometimes called ‘popcorn lung’, it can be caused by a number of different things.

They had breathed in diacetyl, as it was used as a flavouring in the popcorn.

More research is needed to find out if they’re connected.Ī group of popcorn factory workers developed the condition, leading to the name ‘popcorn lung’. It’s caused by a build-up of scar tissue in the lungs, which blocks the flow of air.Ī possible link has been suggested between the disease and a chemical called diacetyl. Popcorn lung (bronchiolitis obliterans) is an uncommon type of lung disease, but it is not cancer.

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