I think it's somewhat true, Tom Venuto says so in his book...
He says for the next couple of hours after heavily drinking... Guess a beer won't kill ya, but a bottle of whisky will..
your body classifies alcohol as a poison, because it is, it therefore puts the metabolising of other nutrients on hold and focuses on eliminating the alcohol from the blood stream. while the liver is concentrating on the alcohol, all the other fats and carbs that would of been metabolized get stored as fat.
so if your gonna drink, drink vodka water and do so on an empty stomach however this would probably not be a good idea!!!