Vitamin D status in medical students and risk factor analysis

Vitamin D status in medical students


  • Vidya Sunil Joshi Vydehi Institute of Medical Sciences and Research Centre
  • Rahul Mandal Vydehi Institute of Medical Sciences and Research Centre



Hypovitaminosis, Immunoassay, Vitamin D


Vitamin D is finding increasing health implications beyond calcium homeostasis. Vitamin D deficiency is prevalent globally including India. Many asymptomatic individuals have hypovitaminosis implicating the need for intervention. The present study aimed at evaluating vitamin D levels among healthy medical students from southern India and its association with well-known risk factors. Hundred apparently healthy medical students between the age group of 18-25 years were recruited based on defined inclusion and exclusion criteria. A questionnaire form with details of sun exposure, tanning, milk intake, general health and drug history were obtained. Vitamin D levels were assessed by chemiluminescent immunoassay (CLIA). Vitamin D values were considered normal for 30-60 ng/ml, deficient for <20 ng/ml and insufficient for levels between 21-29 ng/ml. Majority of the students (89%) had deficient 25-hydroxyvitamin D levels while 8% of the student had insufficient and 3% of the students had sufficient 25-hydroxyvitamin D levels. The mean 25-hydroxyvitamin D level was 14.01±6.20 ng/ml, median level was 12.95 ng/ml and ranged between 5.15 to 43.01 ng/ml. No statistically significant association was noted with sex, BMI, sun exposure, dietary intake or serum calcium levels. To conclude, vitamin D deficiency is highly prevalent in asymptomatic medical students and showed lack of relationship with the well-defined risk factors in literature prompting to look for newer risk factors in this country.


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Author Biographies

Vidya Sunil Joshi, Vydehi Institute of Medical Sciences and Research Centre

Associate Professor, Department of Physiology

Rahul Mandal, Vydehi Institute of Medical Sciences and Research Centre

Postgraduate student, Department of Physiology


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How to Cite

Joshi VS, Mandal R. Vitamin D status in medical students and risk factor analysis: Vitamin D status in medical students. Ann Med Physiol [Internet]. 2018Mar.31 [cited 2024Jul.18];2(1):11-6. Available from:



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