I use the Wahls protocol (Dr. Wahls is an MD formerly at Univ. of Iowa Med School and Iowa City, V. A. hospital, with M.S.)

Her protocol involves an eating plan, meditation, exercise and eliminating sugar (except in whole fruit), gluten & dairy. The eating plan uses 9 cups of veg & fruit per day, adequate protein, certain good fats & some supplements. The 9 cups of veg & fruit are equally divided into three categories - colorful polyphenol rich (example- purple cabbage or raspberries), cruciferous (example-broccoli, asparagus) and Leafy greens (example lettuce, radicchio, spinach etc). Some foods fall in more than one group.
See Dr. Wahls’s website (terrywahls.com) for details and her inspiring story of experimenting with her own M.S. to develop this protocol. I used her book but am now seeing a nutritionist who uses the Wahls protocol with her patients.

Dr. Wahls got out of her wheelchair with this protocol and she believes it is applicable to auto-immune diseases in general. I have Giant Cell Arteritis and am tapering off prednisone. I love the protocol because it is one thing I can do that won’t hurt me. I feel empowered & and comforted. There is so much that is unknown and therefore scary to me about GCA and PNR. Here is one thing (healthy lifestyle) that is known.