I'm not a beer drinker. I don't drink whatsoever. For fun or otherwise. Just a personal preference. But I find this story interest enough to share.
A man, 61 years old, somehow without drinking, is able to get drunk. His wife used a breathalyzer is able to document alcohol level in his blood as high as .40. Apparently, he was suffering from Gut Fermentation Syndrome also known as Auto-Brewery Syndrome.
Apparently, presence of a bacteria, Saccharomyces cerevisiae, is able to use the carbohydrate diet the man eats and turn it into alcohol. It's a wonder the man didn't die of alcohol poisoning. This is essentially caused by an excessive growth of yeast in the man's gut.