Association between vitamin D deficiency and the 8-year risk of incident depression in patients with rheumatoid arthritis: a cohort study (opens in new tab)

BackgroundDepression is common among patients with rheumatoid arthritis (RA) and is associated with adverse clinical outcomes. Vitamin D deficiency (VDD) is also prevalent in patients with RA and has been linked to depressive symptoms in cross-sectional studies; however, longitudinal data on its association with incident depression are limited.MethodsWe conducted a retrospective cohort study using the TriNetX Global Collaborative Network (2010–2024). Adults with RA and serum 25-hydroxyvitamin...