Johnny Novgorod said:
However, the disorder isn't caused by the alcohol itself. It's the result of a deficiency of thiamine, an essential B vitamin. Not only are severe alcoholics often malnourished, extreme alcohol consumption can interfere with the body's absorption of thiamine.
So while alcohol doesn't actually kill brain cells, it can still damage your brain if you drink in mass quantities.
There you go. Don't binge drink, it's bad for your health.
Yeah, he's not gonna get that from a single binge though is he? It's a long term deficiency, and this is out of character for the OP by the sounds of it.
OP seems worried enough as it is, no need to add to it!
That said, I agree that regular binging isn't great, though more for the loss of control and potential for getting in trouble than pure health reasons.
@Reiper
It sounds like you're suffering from the mother of all hangovers, nothing more. If you were doing it weekly it might be a problem, but now and again is probably ok for long term health.
But for the sake of your short term health during nights out, don't drink enough to pass out or be unable to walk, drink water between drinks, pace yourself, definitely stop drinking if you start puking, don't drive, climb, fight, or do extreme sports while under the influence, and so on.
As for the hangover, drink plenty of water, make sure you're eating enough, get enough sleep. And perhaps not get so drunk next time if you don't want to experience the aftermath again!