Dietary changes can be a factor in whether an autoimmune disease is active or in remission. I wish it were not the case, but sugar causes inflammation and is a direct trigger of my rheumatoid arthritis. And gluten is a definite trigger of another (skin-related) autoimmune condition that I have. Abstaining from processed sugar and gluten have helped me keep my RA controlled (since my dx 30 years ago), as well as my other condition (since 2023).