It should be.
Right now it's not really getting to teens because they're pretty active, but once they hit college and maybe decide not to do sports, or don't have time for sports, drinking will make them gain weight. They'll get a little bit more inactive...
I saw a movie on Showcase about a month ago, I don't remember the name, it was like Diary of a Binge Drinker and it had Sara Paxton in it... and it was a good movie, with a good story. The ending was sad, but it just showed what happens when you drink wayyy too much.