Pre-diagnostic vitamin D deficiency and subsequent thyroid cancer risk: a propensity-matched cohort study (opens in new tab)

BackgroundVitamin D deficiency (VDD) has been implicated as a potential risk factor for thyroid cancer; however, existing evidence is derived primarily from case-control or cross-sectional studies. This study aimed to examine the association between pre-diagnostic VDD and the risk of incident thyroid cancer over a 10-year follow-up period.MethodsThis retrospective propensity score–matched cohort study used the TriNetX Global Collaborative Network. Adults aged ≥ 18 y with serum 25-hydroxyvitam...