I'm here to stir up another debate which will probably result in this thread being closed and moderators sending me another warning message. [shame on you]
Jordan Peterson is a high profile Clinical Psychologist in Canada. His daughter developed Rheumatoid Arthritis when she was a child. Through diet and lifestyle changes they have been able to put Rheumatoid Arthritis into remission after suffering for many years and having multiple joint replacements.
Here is a radio show interview with Mikhaila Peterson where she talks about her experience:
Here is her blog, which contains a lot more information:
Here are a few podcasts with her Dad. He is not appearing on these podcasts to talk about the lifestyle impact on RA, but he does mention it throughout each podcast sparingly. You should give them a listen: