Gut changes in RA: which comes first?

The microbiome in people’s guts and mouths is abnormal in people with rheumatoid arthritis and treatment with DMARDs partially restores normality, a study shows.

People with RA have a range of differences in their mucosal microbiota compared with the general population, including depletion of Haemophilus species and an excess of Lactobacillus salivarius.