One Bad Side Effect of Lowering the Drinking Age: Twenty-one is high relative to the rest of the world, and the thinking goes that outlawing alcohol until kids are 21 promotes irresponsible behavior and a culture of binge drinking. It's an argument that feels right, but some public-health researchers disagree.
Why is the Drinking Age 21? "They contend that by lowering the drinking age, colleges would be able to bring booze out into the open and educate students on responsible consumption. Such education might help curb alcohol poisoning, drunken injuries, drinking-fueled violence, and alcoholism on campuses."