Re: Olive oil before alcohol to prevent drunkeness or hangover.

Alcohol can be absorbed from the stomach and its absorption occurs more 
rapidly when the stomach is "empty."  This is the primary reason to 
consume food in conjunction with alcohol.  There is no evidence that a 
particular food, such as olive oil, will prevent alcohol absorption or a 
hangover.  The three main points to remember are to eat something in 
conjunction with alcohol consumption, to drink only in moderation, and not 
to drink and drive!