This recently published research paper may be of interest re factors that may reduce the INCIDENCE of autoimmune disease, not cure it.
bmj.com/content/376/bmj-202...
"Vitamin D and marine omega 3 fatty acid supplementation and incident autoimmune disease: VITAL randomized controlled trial"
BMJ 2022; 376 doi: doi.org/10.1136/bmj-2021-06... (Published 26 January 2022)