The only diet change that helped my autoimmune condition (Hashimoto’s) is the Autoimmune Paleo Diet (AIP). It returned my antibody counts to normal. The diet is very difficult due to the food restrictions and is not intended to be a forever diet. Back when I first started it there were not many online resources for help, there is now. It’s worth a try if you are a determined, disciplined person. Try for 3 months and see.