ArticlePeerJ2026
Association of VitD 3 deficiency with thyroid nodules suspected of malignancy in petroleum workers: a retrospective cohort study.
Article in PeerJ, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Updated perspectives on vitamin D deficiency, screening, supplementation and clinical guidance.Cardiovascular diabetology. Endocrinology reports · 2026Review
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Authors and funding
11 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Background: Thyroid nodules (TNs) are common thyroid disorders. Vitamin D (VitD) is linked to thyroid disease risk, but prior studies mainly focused on total serum VitD and TN risk, ignoring different impacts of VitD3 and VitD2 metabolites on TN development. Methods: Between July and December 2021, we conducted a retrospective cohort study in Dalian, China, involving 2,037 euthyroid male petroleum workers (aged 30-60 years) without thyroid autoimmunity (TAI). Serum 25-hydroxy vitamin D [25(OH)VD], 25(OH)VD3 and 25(OH)VD2 levels were assayed by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The participants were classified into different groups according to their ultrasound images of TNs based on Chinese-Thyroid Imaging Reporting and Data System (C-TIRADS). C-TIRADS consist of 6 grades, and the upper three indicate TNs with potential malignancy. Results: Analysis of the cohort revealed the prevalence of TNs and VitD levels in this population. No C-TIRADS 5 or 6 nodules were identified. Serum 25(OH)VD levels in the C-TIRADS 4 TN group were significantly lower than those in the C-TIRADS 1, 2, and 3 groups. The overall prevalence of TNs was similar among the VitD-deficient, insufficient, and sufficient groups. However, the prevalence of patients with C-TIRADS 4 TNs was markedly higher in the VitD-deficient group (18.5%) than in the insufficient (5.5%, Conclusions: VitD3 deficiency, but not VitD2 deficiency, was independently associated with TNs with suspicious malignancy in euthyroid male petroleum workers aged 30-60 years.
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