My doctor told me gluten free sugar free n no fake sugar is the best for fibro weight lost etc.

I think low carb really helps. I still eat complex carbs but not the ones that quickly dump sugar into your system. Whole grains process much slower & don't do the damage regular carbs do. At least this is what I found, it's great for keeping your weight down too.

I went low car. South Beach. Lost a lot of weight. Stomach felt great, but the Rheumatoid kicked in good. I think it may have been the protein.

Low carb diet helped me lose 11 kilos but can b hard to stick to longterm:)

I have just been advised to go gluten free, wheat free, dairy free for various issues but he says it will definitely help my fibro as well. It is a tough go but getting there gradually. Best of luck.