Can artificial sweetners speed the absorption of alcohol?

THE BELIEF:

Beware of drink mixers based on diet soda.

THE FACTS:

Usually it is solely the liquor component of a cocktail -- not the mixer -- that determines its inebriating effects. But some people contend the artificial sweeteners in diet soda speed the absorption of alcohol.

Odd, perhaps, but research suggests it's true. In a 2006 study, a team of scientists recruited healthy subjects and had them consume vodka cocktails. On some occasions, it was a 20-ounce drink mixed with a sugar-sweetened beverage, and on others it was a nearly identical drink mixed instead with a diet beverage.

In the diet-mixer conditions, the alcohol entered the subjects' bloodstream about 15 minutes faster, and their blood-alcohol concentration was higher, peaking at 0.05 percent, compared with 0.03 percent with the regular mixer.

One theory is that the alcohol is absorbed more quickly because there is no sugar to slow it down, which would mean that club soda would have a similar effect. A second study in 2007 also showed that alcohol was absorbed far more quickly when mixed with carbonated beverages than with flat mixers, possibly because of the effervescence. As a result, experts say, it's best to choose flat mixers like orange or cranberry juice over diet sodas or juices.

THE BOTTOM LINE:

Compared with sugar-sweetened drinks, artificial sweeteners can speed inebriation.