Pattern of vitamin D status in prediabetic individuals: a case control study at tertiary hospital in South India

Srinath K. M.; Shashidhara K. C.; Rajeev Reddy G.; Madhu Basavegowda; Kishaloy Debnath; Mahesh M.G.

doi:10.18203/2320-6012.ijrms20160706

Authors

Srinath K. M. Associate Professor of Medicine, JSSMC, JSS University, Mysuru
Shashidhara K. C. Associate Professor of Medicine, JSSMC, JSS University, Mysuru
Rajeev Reddy G. Consultant Physician, M.D. General Medicine, H. No -19/5 Markapuram, Porumamilla, Kadapa, Andhra Pradesh
Madhu Basavegowda Associate Professor, Department of Community Medicine, JSSMC, JSS University, Mysuru
Kishaloy Debnath Post Graduate, M.D. General Medicine, JSSMC, JSS University, Mysuru
Mahesh M.G. Assistant Professor, Department of Medicine, JSS Medical college & Hospital, JSS University, Mysuru

DOI:

https://doi.org/10.18203/2320-6012.ijrms20160706

Keywords:

Vitamin D, Vitamin D deficiency, Prediabetes, Type 2 DM, Prevalence

Abstract

Background: Role of vitamin D in the regulation of calcium metabolism is well established. Vitamin D deficiency has been linked to impaired glucose tolerance and type 2 DM in humans. There is a limited available data on the relationship of vitamin D insufficiency/deficiency with glucose homeostasis among prediabetic individuals in South Indian population. Hence we examined serum 25(OH) D₃ concentration among prediabetics. The objective of this study is to evaluate prevalence of vitamin D deficiency in prediabetics and to study any correlation between vitamin D and BMI, FBS and PPBS among prediabetics.

Methods: A case control study was carried out among 40 prediabetics & controls, after obtaining consent from subjects and clearance from institutional ethics committee. Serum vitamin D levels were measured by radioimmunoassay in both groups. Statistical analysis was done using “t” test & Pearson correlation co-efficient (r).

Results: Vitamin D levels less than 20 ng/ml were found in 72.5% of cases and 35% of controls. 5% of the cases and 12.5% of the controls had vitamin D above 30 ng/ml and this difference was statistically significant. Mean vitamin D levels in cases and controls was 17.09±5.89 ng/ml and 23.67±11.02 ng/ml respectively (P<0.05). A significant inverse correlation was observed between vitamin D levels & body mass index (r=-0.274; p=0.014); random blood sugar (r=-0.35; p=0.001); fasting blood sugar (r=-0.328; p=0.003); post prandial blood sugar (r=-0.276; p=0.013).

Conclusions: High prevalence of hypovitaminosis D exists among prediabetics and there is significant inverse correlation between BMI, FBS, PPBS and vitamin D levels. Hence, a prospective study covering large pre-diabetic individuals is essential to confirm the findings.

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