[saint_fiasco]

It depends on concentration. If the concentration is low enough, then the alcohol will exit your system in the same sweat that keeps you cooled down, and the same pee that gets rid of other stuff (pee is rarely saturated).

It's only when you drink enough alcohol that you start sweating/peeing specifically to get rid of alcohol that you get diuretic effects.

[abandonliberty]

If you're a bit dehydrated, 1L of 4% beer won't make it worse, and 2% supposedly does nothing.

Alcohol isn't just a toxin that your body eliminates; one of its effects are to override our excretion pathways. http://www.reddit.com/r/askscience/comments/24t7hr/at_what_p...

The science in this field is interesting. Poor test subjects had to drink a litre of 4% beer. http://alcalc.oxfordjournals.org/content/45/4/366.full