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Sleep Disorders
Volume 2019, Article ID 3434507, 7 pages
Research Article

Consumption of Energy Drinks and Their Effects on Sleep Quality among Students at the Copperbelt University School of Medicine in Zambia

1The Copperbelt University, Michael Chilufya Sata School of Medicine, P.O. Box 71191, Hilcrest, Ndola, Zambia
2The Copperbelt University, Michael Chilufya Sata School of Medicine, Public Health Unit, P.O. Box 71191, Hilcrest, Ndola, Zambia

Correspondence should be addressed to Richard Kalima Mwape; moc.liamg@epawmdrahcir

Received 8 November 2018; Revised 28 December 2018; Accepted 12 January 2019; Published 3 February 2019

Academic Editor: Liborio Parrino

Copyright © 2019 Richard Kalima Mwape and David Mulenga. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. Good sleep quality is cardinal to good health, and research has shown that it plays a fundamental role in immunity, learning, metabolism, and other biological functions. Energy drink consumption is a popular practice among college students in the United States. There has been little research done on the consumption of energy drinks and its effects in Zambian universities. The main objective was to determine the effects of energy drinks on sleep quality among students at the Copperbelt University School of Medicine. A self-administered questionnaire was administered to 195 undergraduate students at the Copperbelt University School of Medicine in their second- and third-year of study. Energy drink consumption and sleep quality were assessed by univariate, bivariate, and multivariate analyses. 157 students were enrolled into the study. The prevalence of energy drink consumption was 27.4% among participants. Studying for an exam was the most common reason for drinking energy drinks (83.7% of energy drink users). The majority of participants were found to be have poor sleep quality (59.6%). There was a statistically significant association between energy drink consumption and poor sleep quality (p value < 0.01). The findings of our study show that energy drink consumption is not a common practice in the Zambian university setting as the prevalence was 27.4%. Furthermore, the prevalence of poor sleep quality among Zambian university students is high and is significantly associated with energy drink consumption, and there is a need to better understand the patterns of energy drink use as well as their effects on various aspects of health including sleep quality in the Zambian setting. Further research should assess the knowledge of nonmedical students on the effects of energy drinks.