Dietary interventions are rarely taken as seriously as pharmacological therapies in rheumatology. Yet patients ask about them constantly, and an increasing number of studies suggest that nutrition may influence disease outcomes. Two randomized controlled trials presented at EULAR 2026 add to this growing literature in PsA and RA. However, before we start prescribing Mediterranean diets, the data deserve a closer look.

Pharmaceutical companies are presenting pivotal clinical trial results and key data analyses at the EULAR 2026 Congress (June 3–6, London). Below is a summary of their most important studies — many of which are registration-enabling or will directly shape treatment decisions in rheumatic diseases.