"It is one of the most awesome things in life. This leads to a couple of important questions. One: how long can you survive on beer alone? Two: to what extent is beer a suitable replacement for water?
A couple years ago, Slate's Jeremy Singer-Vine had a go at the first question. His answer? You'd live long enough to develop scurvy, but probably not much longer:
"Not more than a few months, probably. That's when the worst effects of scurvy [resulting from vitamin c deficiency] 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."
One experiment, in particular, lends credence to the first half of Singer-Vine's hypothesis: in the 1920s, researchers fed two Rhesus macaque monkeys with 200 milliliters of India pale ale per day, and some other foods lacking in vitamin C — within 2 months the monkeys were exhibiting symptoms of scurvy. But what about the second half? The part about dying of dehydration?"
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