Research Papers / Reasons against lowering the drinking age - points to talk about? [3]

I'm writing a research paper that's due in 2 days and it's about lowering the drinking age. I first took the side of lowering the drinking age, but then i realized there's more facts and reasons not to lower it and it would make for a better research paper. I need to come up with 3 preview points to talk about for my body paragraphs. Any suggestions for points to talk about? enough to write 5 pages? please help!!