Low levels of 25-hydroxyvitamin D in children and adolescents with type 1 diabetes mellitus: A single center experience

Ki Nam Bae, Hyo Kyoung Nam, Young Jun Rhie, Dae Jin Song, Kee Hyoung Lee

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Purpose: Low vitamin D level is common in adults with diabetes mellitus (DM). We assessed vitamin D level and its associated factors in Korean youth with type 1 DM. Methods: Type 1 DM cases (n=85) and healthy controls (n=518) aged <20 years were included and grouped into 3 categories according to vitamin D level: deficiency (<20 ng/mL), insufficiency (20–30 ng/mL), or sufficiency (≥30 ng/mL). Results: The mean serum vitamin D level was significantly lower (21.6±8.5 ng/mL vs. 28.0±12.0 ng/mL, P<0.001) and vitamin D deficiency prevalence was significantly higher (48% vs. 26%, P<0.001) in type 1 DM cases than in healthy controls. Logistic regression analysis revealed that type 1 DM cases were more likely to have vitamin D deficiency (P=0.004), independent of sex, age, and body mass index. Type 1 DM cases with vitamin D deficiency/insufficiency were mainly diagnosed in winter (November to April) (P=0.005), and the duration of diabetes was longer than in those with vitamin D sufficiency (P=0.046). However, season of diagnosis, duration of diabetes, prescribed daily insulin dose, and glycosylated hemoglobin and C-peptide levels were not associated with 25-hydroxyvitamin D (25(OH)D) level in type 1 DM cases after adjustment for other factors. Conclusion: We recommend assessment of serum 25(OH)D level in type 1 DM cases and to treatment if findings indicate insufficiency. Further studies investigating the mechanisms underlying vitamin D deficiency in youth with type 1 DM are needed.

Original languageEnglish
Pages (from-to)21-27
Number of pages7
JournalAnnals of Pediatric Endocrinology and Metabolism
Issue number1
Publication statusPublished - 2018 Mar


  • Case-control studies
  • Child
  • Diabetes mellitus
  • Type 1
  • Vitamin D deficiency

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Endocrinology, Diabetes and Metabolism


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