Indian Journal of Clinical Biochemistry

, Volume 28, Issue 1, pp 74–78 | Cite as

Vitamin D Deficiency and Insulin Resistance in Normal and Type 2 Diabetes Subjects

  • Sowjanya Bachali
  • K. Dasu
  • K. Ramalingam
  • J. N. Naidu
Original Research


Vitamin D is recognized to serve a wide range of biological functions. The presence of vitamin D receptors on different tissues explains it’s diversity of actions. Reduced levels of vitamin D is associated with insulin resistance and increased diabetes risk. The study included 50 normal healthy individuals and 49 type 2 diabetes subjects. Fasting blood glucose, total cholesterol, triglycerides, HDLc, fasting insulin, parathyroid hormone, calcium, albumin and Homeostasis model for assessment of insulin resistance (HOMAIR) were measured in all the study participants. Type 2 diabetes subjects were divided into group 1 with 25 hydroxy vitamin D (25(OH)D) ≤20 ng/ml and group 2 with 25(OH)D >20 ng/ml. By the results of this study, the mean 25(OH)D level was low (20.09 ng/ml) in type 2 diabetes compared to controls (23.89 ng/ml) and the p value was 0.02. The estimated insulin resistance by HOMAIR was more in group 1 than in group 2 of diabetes with p value of 0.037. The Pearson’s correlation-coefficient was negative for 25(OH)D and insulin in type 2 diabetes (r = −0.294), 25(OH)D was negatively correlated with HOMAIR in total subjects. Type 2 diabetes subjects had reduced levels of vitamin D than normal individuals. The insulin resistance was more in vitamin D deficiency state. Hence vitamin D has a role in glucose metabolism, deficiency can result in insulin resistance and diabetes.


Diabetes Insulin resistance 25 hydroxy vitamin D 


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Copyright information

© Association of Clinical Biochemists of India 2012

Authors and Affiliations

  • Sowjanya Bachali
    • 1
  • K. Dasu
    • 2
  • K. Ramalingam
    • 1
  • J. N. Naidu
    • 1
  1. 1.Department of BiochemistryNarayana Medical College and HospitalNelloreIndia
  2. 2.Department of Internal MedicineNarayana Medical College and HospitalNelloreIndia

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