Low vitamin D status and long-term risk of incident fibromyalgia: a propensity score–matched cohort study

BackgroundCross-sectional studies have reported lower serum vitamin D concentrations in patients with fibromyalgia, but whether vitamin D deficiency (VDD) precedes fibromyalgia onset remains uncertain. We conducted a large retrospective cohort study to evaluate the association between VDD and the long-term risk of incident fibromyalgia.MethodsWithin the TriNetX Network, we identified adults (≥1...