You can file this one under DUH, but as you get older the worse your hangovers will be. Any one who has been on an all night bender of tequila and whiskey in college and then again 10 years later can attest to this fact , but the researchers at Union College thought we needed a reason for this.

They determined that as you get older levels of a certain enzyme that breaks down alcohol and it's toxins decrease.  Ipso facto the toxins can hang around longer in your system, leading to a worse hangover that when you were young.However, these researchers also found that cheap booze gives you a much worse hangover than say expensive booze. The reason is, is that cheaper alcohol has a less rigorous fermentation and distillation process, which leaves it with a higher level of, quote, "junk chemicals."