How long can a human being live for if he consumes only beer as food?

Beer has had a reputation since antiquity as being a staple in the diet, often called ‘liquid bread’. In ancient Egypt, workers received beer as part of their salary.The high reputation for beer came about because it was made from malted barley, which is rich in vitamins. A quick check using nutritional tables shows that a pint can provide more than 5 per cent of the daily recommended intake of several vitamins, such as B9, B6 and B2, although other vitamins such as A, C and D are lacking.

If a person consumes only beer as food, he will live for not more than a few months, probably. That’s when the worst effects of scurvy and protein deficiency would kick in. If you kept to a strict beer diet—and swore off plain water altogether, you’d likely die of dehydration in a matter of days or weeks, depending on the strength and volume of beer consumed. There’s plenty of water in beer, of course, but the alcohol’s diuretic effect makes it a net negative in terms of hydration under most conditions.

Living on beer alone may be a fantasy for some, but it is not a good health strategy.