My functional medicine doctor suggested the Auto Immune Protocaol Diet (AIP). Warning: Its very difficult to adhere to and is just meant to be on for a few months until you see if it works then adding back in foods slowly to see which ones trigger flareups. I was on it for 3 months and had never felt better. I still try to avoid certain foods that are known to trigger flareups.

Another suggestion: Research Earthing and Grounding. There is a 15 minute video on YouTube that explains it all:
DOWN TO EARTH | The Earthing Movie 15 min Short Film. It has worked for my husband.