This is not the only research regarding microbiome and autoimmune disease. While this article states that their findings seem most promising for Lupus Nephritis

This is not the only research regarding microbiome and autoimmune disease. While this article states that their findings seem most promising for Lupus Nephritis, there are recent articles that point to other microbes which are relevant to rheumatoid arthritis: https://www.sciencedaily.com/releases/2016/07/160711151315.htm https://www.sciencedaily.com/releases/2016/07/160711151315.h... and https://www.nih.gov/news-events/nih-research-matters/gut-microbes-linked-rheumatoid-arthritis https://www.nih.gov/news-events/nih-research-matters/gut-mic... among many others with the search "rheumatoid arthritis and gut microbes". See this for MS https://www.scientificamerican.com/article/gut-germs-appear-to-play-role-in-multiple-sclerosis/?utm_source=twitter&utm_medium=social&utm_campaign=sa-editorial-social&utm_content=link-post&utm_term=health_partner_text_free&sf113425307=1 https://www.scientificamerican.com/article/gut-germs-appear-... This is my all time favorite that just came out in Nature which shows that anti-inflammatories may contribute to slow growth of beneficial gut microbes. I have identified at least two first line DMARD's used in rheumatoid arthritis that are mentioned in this article. https://www.nature.com/articles/d41586-018-02780-x?utm_source=twt_na&utm_medium=social&utm_campaign=NNPreshigh https://www.nature.com/articles/d41586-018-02780-x?utm_sourc... So, while autoimmune diseases amy not stem from gut bacteria, there is definitely some relationship about which we need to learn more.