Hi Kerri - I tried the Zone diet for about two months last year and maybe it's just me but I had a lot of problems. Figuring out your meals can be very complicated and difficult to manage if you are in a hurry (or don't have bags of money to spend at the grocery store). I felt shaky and tired all the time, I was crabby and short-tempered even though I wasn't hungry, and I was so constipated that I was just dying (even when I followed all of the recommendations on how to prevent that to the letter). I know a lot of people have had success with this plan, so maybe it's just me - maybe I have a body type that needs more carbs, who knows? Anyway, if your doctor was the one who suggested it, maybe it's right for you. Only way to find out is to give it a try (but maybe get some Metamucil first!!) :-wow Good luck!