PROSPECTIVE EVALUATION OF SERUM VITAMIN D LEVELS IN TYPE 2 DIABETES MELLITUS PATIENTS AND CORRELATION WITH GLYCEMIC CONTROL

Main Article Content

Ashish Jain
Mani Kant Choudhary
Arvind Bharti
Bhumija Sharma

Keywords

Type 2 Diabetes Mellitus, Vitamin D, HbA1c, Glycemic Control, Biochemistry

Abstract

Background: Type 2 Diabetes Mellitus (T2DM) is a growing global health concern. Recent evidence suggests a potential link between Vitamin D deficiency and poor glycemic control. This study aimed to evaluate serum Vitamin D levels in T2DM patients and analyze their correlation with glycemic parameters.


Methods: This prospective observational study was conducted in the Department of Biochemistry, FH Medical College, Agra over 12 months. A total of 150 diagnosed T2DM patients were included. Serum 25(OH) Vitamin D and glycemic parameters (HbA1c, Fasting Blood Glucose [FBG], Postprandial Blood Glucose [PPBG]) were measured and analyzed.


Results: Vitamin D deficiency (<20 ng/mL) was observed in 68% of patients. A statistically significant inverse correlation was found between serum Vitamin D levels and HbA1c (r = –0.42, p < 0.01). Similar trends were seen with FBG and PPBG.


Conclusion: Vitamin D deficiency is highly prevalent in T2DM patients and is significantly associated with poor glycemic control. Screening and supplementation of Vitamin D may serve as an adjunct in the management of T2DM.


 

Abstract 129 | Pdf Downloads 59

References

1. International Diabetes Federation. IDF Diabetes Atlas, 10th ed. Brussels, Belgium: International Diabetes Federation; 2021.
2. Anjana RM, Deepa M, Pradeepa R, Mahanta J, Narain K, Das HK, et al. Prevalence of diabetes and prediabetes in 15 states of India: Results from the ICMR-INDIAB population-based cross-sectional study. Lancet Diabetes Endocrinol. 2017;5(8):585–96.
3. Zeitz U, Weber K, Soegiarto DW, Wolf E, Balling R, Erben RG. Impaired insulin secretory capacity in mice lacking a functional vitamin D receptor. FASEB J. 2003;17(3):509–11.
4. Bansal AS, Kaur H, Bansal S. Correlation between 25(OH)D levels and HbA1c in North Indian type 2 diabetic subjects. J Clin Diagn Res. 2014;8(2):30–3.
5. Palomer X, González-Clemente JM, Blanco-Vaca F, Mauricio D. Role of vitamin D in the pathogenesis of type 2 diabetes mellitus. Diabetes Obes Metab. 2008;10(3):185–97.
6. Chiu KC, Chu A, Go VL, Saad MF. Hypovitaminosis D is associated with insulin resistance and β cell dysfunction. Am J Clin Nutr. 2004;79(5):820–5.
7. American Diabetes Association. Standards of medical care in diabetes—2024. Diabetes Care. 2024;47(Suppl 1):S1–212.
8. Holick MF, Binkley NC, Bischoff-Ferrari HA, Gordon CM, Hanley DA, Heaney RP, et al. Evaluation, treatment, and prevention of vitamin D deficiency: an Endocrine Society clinical practice guideline. J Clin Endocrinol Metab. 2011;96(7):1911–30.
9. Mithal A, Wahl DA, Bonjour JP, Burckhardt P, Dawson-Hughes B, Eisman JA, et al. Global vitamin D status and determinants of hypovitaminosis D. Osteoporos Int. 2009;20(11):1807–20.
10. Pittas AG, Lau J, Hu FB, Dawson-Hughes B. The role of vitamin D and calcium in type 2 diabetes. A systematic review and meta-analysis. J Clin Endocrinol Metab. 2007;92(6):2017–29.
11. Boucher BJ. Is vitamin D status relevant to metabolic syndrome? Dermatoendocrinol. 2012;4(2):212–24.
12. Forouhi NG, Luan J, Cooper A, Boucher BJ, Wareham NJ. Baseline serum 25-hydroxy vitamin D is predictive of future glycemic status and insulin resistance. Diabetes. 2008;57(10):2619–25.
13. George PS, Pearson ER, Witham MD. Effect of vitamin D supplementation on glycaemic control and insulin resistance: a systematic review and meta-analysis. Diabet Med. 2012;29(8):e142–50.
14. Seida JC, Mitri J, Colmers IN, Majumdar SR, Davidson MB, Edwards AL, et al. Clinical review: Effect of vitamin D3 supplementation on improving glucose homeostasis and preventing diabetes: a systematic review and meta-analysis. J Clin Endocrinol Metab. 2014;99(10):3551–60.