Determinants of Vitamin D deficiency in asymptomatic healthy young medical students.

Objective: The study aimed to determine vitamin D status and frequency of its determinants related to diet, clothing, lifestyle and exposure to sunlight among young healthy medical students living in Karachi, Pakistan.

Methods: This cross sectional study included responses gathered on questionnaire from medical students of Karachi Medical &Dental College from 4 of August 2017 till 30 April 2018. All the participants were healthy young adult's year of age who gave written informed consent to participate in the study.