Understanding what alcohol does to your body.

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They don't call it intoxication for nothing. Happy juice is poisonous. Put enough of it into your body and you die. What concerns us here, however, is not so much alcohol itself (which we'll take as a given) but the by-products of alcohol, and especially one particularly nasty chemical critter by the name of acetaldehyde. It's got a lot more of the bad kind of kapow, and the latest research suggests that it may be responsible for the worst of your hangover. Translation: the more you drink in a short amount of time, the more you'll feel the alcohol. One's weight is also a factor (the less you weigh, the more you'll feel it), as is a genetic predisposition. Finally, the older you get, the more you'll feel the alcohol the next morning.