Man cannot survive on beer alone. Or can he?

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.

Scurvy would be an ironic cause of death for a beer-dieter, since the drink was long considered a prophylactic against the disease.