Background: With the advancement in technology and use of multiple electronic devices and decreasing duration of sleep, adolescents are more prone to obesity, i.e., increased BMI (body mass index). Objectives: The objectives of the study were to determine the association between sleep duration, use of electronic devices, and obesity in medical students. Methods: Medical students between the age groups 17-22 years were recruited. The study design was cross-sectional. The main study variables were the type and duration of use of various electronic devices during daytime and bedtime. The independent variable used in the study was the subjects" self-reported average number of hours of sleep obtained per night based on the questionnaire. To calculate the BMI, height and weight were obtained. Results: There is a significant association between short sleep duration and prolonged use of electronic devices. (p<0.01) Those who engaged in electronic devices for a longer period had significantly higher BMI (obesity) p < 0.001. Maximum use of mobile phones was found during bedtime. The males were using more mobile phones for video gaming than female medical students. Conclusions: Reducing bedtime use of electronic devices and improving sleep hygiene in adolescents could decrease the prevalence of obesity in adolescents.
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