Prevalence and factors associated with dietary supplement use among Bangladeshi public university students: A cross-sectional study

Introduction The usage of dietary supplement (DS) such as vitamins, minerals, and fish oil has expanded, but there is limited data on their use by sub-populations such as university students. The study was aimed to investigate the prevalence of DS use among Bangladeshi university students and its associated factors. Methods A cross-sectional survey of 390 students was conducted from two public universities from Barishal Division in Bangladesh using a structured questionnaire with 72 questions divided into five sections: sociodemographic, knowledge, opinions, and attitudes, types of DS, reasons and sources for using DS, and adverse reactions after taking DS. Descriptive statistics and logistic regression were utilized to estimate the results. Results Among all the students, 15.6% students were using DS where only 7.7% of them used DS according to physicians’ recommendation. Additionally, students used DS for general health and well-being, weight gaining and as a source of energy for physical and sporting activities, etc. The use of DS was significantly associated with female sex (AOR = 5.44, 95% CI: 2.18–13.52), ≥25 years age (AOR = 0.08, 95% CI: 0.01–0.67), underweight (AOR = 5.86, 95% CI: 1.95–17.62), having major illness (AOR = 6.99, 95% CI: 1.98–24.70) and good knowledge of DS (AOR = 2.64, 95% CI: 1.23–5.64). Conclusion This study provides new findings on DS use and its correlates in Bangladeshi students which may be used by the policymakers to improve DS usage among students. Adaptation of an appropriate program is recommended to educate students on proper and safer ways of using DS.