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Alcohol and Caffeine: A Dangerous Mix

Alcohol and Caffeine: A Dangerous Mix

Vicki Santillano | DivineCaroline

November 09, 2010

Mixing caffeine and alcohol is hardly a new trend; Irish coffee, for example, has warmed many a belly in the United States since the 1950s. And as long as such drinks have been around, so has the question of whether combining a stimulant (caffeine) and a depressant (alcohol) poses any health risks.

However, unlike the newer alcohol-caffeine fusion cocktails that are popular among the college crowd these days, Irish coffees haven’t put numerous people in the hospital for alcohol poisoning, rapid heartbeats, and other serious problems. Compared with the standard Red Bull and vodka or any of the malt liquor–stimulant juice blends that come conveniently premixed, Irish coffee seems about as dangerous as a warm cup of milk.

One brand in particular, Four Loko, made headlines recently in connection with a rash of college students’ who ended up in the ER with alcohol poisoning after drinking it at parties. With an alcohol content of 12 percent (that’s around four to six beers) and the caffeine equivalent of a cup of coffee in each 23.5-ounce serving, Four Loko is called “blackout in a can” for a reason—its elevated levels of caffeine and alcohol make for risky situations that can escalate into something worse all too easily. (Just ask the hospitalized students in New Jersey and Washington.) But why does mixing caffeine and alcohol have such adverse effects on our bodies and minds in the first place? How does it increase the potential for disastrous consequences?

A Bad Combination for the Body and the Brain

Caffeine and alcohol have opposite effects on the body’s central nervous system. The former makes you energetic and slightly manic, while the latter makes you sleepy. Putting both of these in your body at the same time greatly confuses your system and throws nerve messages out of whack, thereby leading to even poorer coordination and motor skills, as well as dizziness, difficulty breathing, and cardiovascular issues. People with heart problems should be especially wary of imbibing Red Bull cocktails and other caffeinated alcoholic beverages, but there have been instances in which people without preexisting conditions have suffered heart ailments as well. In October 2010, ABC News reported on a nineteen-year-old man in Philadelphia who had a heart attack after combining alcohol and caffeine. According to the doctor, he didn’t show any other signs of a poor heart.

Other than sending your nervous system conflicting messages, mixing alcohol and caffeine has an even more troubling effect on the average drinker’s judgment and behavior. Various studies show a link between drinking beverages like Four Loko or Joose (another fruity malt-liquor concoction) and a higher likelihood of both getting in a car with a drunk driver and being a drunk driver. One study published in a 2010 edition of Addictive Behaviors surveyed 802 people leaving bars and tested their blood alcohol levels. Of that group, the ones who reported drinking alcohol-and–energy drink cocktails were three times more likely to leave the bar “highly intoxicated” than the other participants were. Even scarier, that subgroup was four times more likely to get behind the wheel afterward.

Next: Ending the Party on a Sour Note →


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