The glycemic index and weight loss

At the same time as you want to maximize fat burn, you want to minimize fat storage. And the only way to do that is to eat in a way to control insulin levels. You know, insulin, the hormone that makes glucose enter your cells? Well, we could call it the "storage hormone". That means the more insulin is secreted, the more sugar and fat is stored. And insulin secretion will be determined by your blood sugar levels.

So, on top of eating protein, fat and fiber, there's another way to keep your blood sugar in check. Choose carbohydrates that have a low glycemic index. The lower the number, gives you a smaller insulin secretion, thus less storage. And it might keep you full a little longer.
http://en.wikipedia.org/wiki/Glycemic_index