Drinking too much causes hangovers. That's common fact. The degree of your hangover depends on your tolerance for alcohol, just as the amount you take in does. That's another common fact. But what isn't so common is the fact that there are certainly kinds of alcohol that gives you worse hangovers than others.

The British Medical Journal reported that those included in the list of drinks which can produce the most hangover symptoms are the following: brandy, red wine, rum, whiskey, white wine, gin, and vodka. In another study, it revealed that bourbon "was twice as likely to cause sickness as the same amount of vodka."

This is because of the complex organic molecules and congeners, present in a drink. It is said that congeners - like methanol - common in darker liquors, have the greatest effect when it comes to sending you off to la-la land after some swig of your drink of choice. Then again, of course, impurities existing in poorly refined spirits (ie. cheap vodka) could also be a factor.

Beer not on the list? Good. Party's still all good, then.