In rare cases, someone’s gut can make its own alcohol from carbohydrates Jack Andersen/Getty Images

A man in the US has started producing beer in his gut after it accidentally became colonised by high levels of brewer’s yeast.

The normally healthy 46-year-old began to experience mental fogginess, dizziness and memory loss in 2011 and had to give up his job. He saw multiple doctors, but they couldn’t work out what was wrong. A psychiatrist prescribed him antidepressants in 2014, but this didn’t help.

A few months later, the man was pulled over and arrested for erratic …