GI DIet and how it works ?

I see there is a list of foods with numbers beside it, im sure there is some sort of limit on the GI DIet? I went to the doc yesterday just to change from the patch onto the pill and i was told my BMI is 2 high and she wont give me the pill, instead she put me on Cerazetta estrogen-free pill and i googled it and I never seen so many bad reviews about it so going to get weight down now once and for all. It was a shock for sure
so can someone give me a lil short run down on it

The lower the number the better the food is for you vic trying to lose weight stick to about 45 GL a day. Personally, I don't use the GL values. I just choose GL friendly foods and watch my overall calorie intake. For that you can use something like myfitnesspal. It has a great iPhone app too.