Type 2 & other diabetes

Vitamin D Status, Vitamin D Receptor Polymorphisms, and Risk of Type 2 Diabetes: A Prospective Cohort Study

J Clin Endocrinol MetabPublished Prospective cohort study

An erratum to this article was published (J Clin Endocrinol Metab, 13 Aug 2024 ↗)

Authors' conclusion

Higher serum 25(OH)D concentrations were associated with lower T2D risk across the glycemic spectrum below the threshold for diabetes, and the relations in prediabetes were modified by VDR polymorphisms. Improving the lipid profile, mainly triglycerides, accounted for part of the favorable associations.

Study context

Population
Participants without T2D at baseline from the UK Biobank, analysed by glycemic status (normoglycemia, prediabetes) and HbA1c levels
Participants
379,699 participants
Exposure
Serum 25D ≥75 nmol/L vs <25 nmol/L
Outcome
Incident T2D
Follow-up
Median 14.1 years
Methodological detailsUK Biobank
  • UK Biobank

Main finding

As reported in the abstract

median 14.1 years
25(OH)D ≥ 75 nmol/L vs 25(OH)D < 25 nmol/LMultivariable-adjusted HR (95% CI)
Normoglycemia
0.62(0.56–0.70)
Prediabetes
0.64(0.58–0.70)
Developed T2D, normoglycemia
6315
Developed T2D, prediabetes
9085

Observational data: associations, not effects.

Further findings

Interaction between 25(OH)D and vitamin D receptor (VDR) polymorphisms, prediabetes

Reduced HR of T2D with higher 25(OH)D more prominent in T allele carriers of rs1544410
P for interaction = 0.017

Mediation by triglyceride levels

Proportion mediated, normoglycemia
26%
Proportion mediated, prediabetes
34%

Original publication

Vitamin D Status, Vitamin D Receptor Polymorphisms, and Risk of Type 2 Diabetes: A Prospective Cohort Study. J Clin Endocrinol Metab. Published 4 April 2024. doi:10.1210/clinem/dgae221

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