What is auto-brewery syndrome?

Do you really know?

Imagine being drunk, without having drunk a single drop of alcohol, it seems completely implausible, and yet for some is a reality. South-West media shared the story of a motorist who appeared in court in Bruges in 2022 after being found to have too much alcohol in his blood twice in the same year. The man, in his forties, was eventually acquitted, proving that the tests were not the result of a night of drinking, but rather of auto-brewery syndrome.

Self-brewing syndrome, also known as intestinal fermentation syndrome, is when your body turns into a mini-brewery. Professor Alvarez, co-author of an analysis published on the subject in December 2020. says it’s when carbs ferment into ethanol right inside your gut, thanks to yeast. Normally, our gut yeast can’t brew enough booze to affect us. But for those with auto-brewery syndrome, it’s a different story. They’ve got an overabundance of yeast, and when too much sugar is consumed, it ferments into alcohol, leading to drunkenness.

What is it? And what are the consequences? Can it be treated? In under 3 minutes, we answer your questions!

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