Go on the GAPS diet. Your gut is compromised, leading to autoimmunity.
(don't be scared of the source of this article. GAPS is not associated with any religion, it was created by a neurosurgeon)
GAPS (Gut and Psychology Syndrome)
Healing Rheumatoid Arthritis on GAPS Diet: Elli Sparks 01/11 by BethWiles | Blog Talk Radio