The Influence of High Sugar Intake on Cognitive Functions and Body Composition of University Students
Vol.8,No.1(2017)
Free sugars contribute to the overall energy density of diets and may promote a positive energy balance. According to WHO, the recommended sugar intake is 25 grams per day for an adult of normal BMI. According to Euromonitor International, the amount of sugar consumed per day in the Czech Republic is 71.6 grams. Excessive sugar intake can increase the risk of NCDs and various studies investigating the high sugar intake agree that sugar consumption could have an impact on the cognitive abilities of the person. The present study was aimed to determine the effects of high sugar intake on the body weight, body composition (using the BIA method - Bodystat 1500MDD), and learning abilities on a sample of university students (N=107) assigned into two groups. While the experimental group was instructed to stick to a sugar free diet, the control group had no specific diet prescribed. Selected variables were measured, by LGT-3 test and bioimpedance measurement, at the beginning of the experiment and after one month (33 participants completed the experiment). No significant differences in body composition or cognitive functions were found between the experimental and control groups after the experiment. Therefore we cannot conclude that reduction in sugar consumption has an impact on body composition or cognitive functions. Finally, a number of recommendations were formulated to encourage an adequate intake of sugar for the experimental sample.
sugar intake; cognitive functions; body composition; LGT3 test; learning; short-term memory
Joany Lizet Hernández
Mendel University in Brno
Department of Languages and Cultural Studies
Technical worker for educational process
Jiří Čeněk
Mendel University in Brno
Department of Social Development (FRDIS)
External Teacher -
Martin Čuta
Masaryk University
Department of Anthropology, Faculty of Science
Assistant professor
Bellisle, F. (2004): Effects of Diet on Behaviour and Cognition in Children. British Journal of Nutrition, 92(2), 227–232. https://doi.org/10.1079/BJN20041171
Benton, D. (2010): The Plausibility of Sugar Addiction and Its Role in Obesity and Eating Disorders. Clinical Nutrition, 29(3), 288–303. https://doi.org/10.1016/j.clnu.2009.12.001
Euromonitor International (2014): The Sugar Backlash and Its Effects on Global Consumer Markets. London: Euromonitor International Ltd.
Grimm, H. C. – Harnack, L. – Story, M. (2004): Factors associated with soft drink consumption in school-aged children. Journal of American Dietetic Association, 104(8), 1244–1249. https://doi.org/10.1016/j.jada.2004.05.206
Horák, M. (2013): The House of Song. The Rehabilitation of Drug Addicts by the Traditional Indigenous Medicine of the Peruvian Amazon. Brno: Mendel University in Brno.
Hsu, T. M. – Konanur, V. R. – Taing, L. – Usui, R. – Kayser, B. D. – Goran, M. I. – Kanoski, S. E. (2015): Effects of Sucrose and High Fructose Corn Syrup Consumption on Spatial Memory Function and Hippocampal Neuroinflammation in Adolescent Rats. Hippocampus, 25(2), 227–239. https://doi.org/10.1002/hipo.22368
Kanoski, S. E. – Davidson, T. L. (2011): Western Diet Consumption and Cognitive Impairment: Links to Hippocampal Dysfunction and Obesity. Physiology & Behavior, 103(1), 59–68. https://doi.org/10.1016/j.physbeh.2010.12.003
Kutáč, P. (2012): Application of Typical Error of Measurement for Accuracy of Measurement of Body Composition in Athletes Using the BIA Method. Medicina Sportiva, 16(4), 150–154. https://doi.org/10.5604/17342260.1024770
Maršálková, L. – Hrabovská, A. – Meszárošová, B. (1992): Pamäťový test LGT - 3. Bratislava: Psychodiagnostika.
McCrory, M. – Nommsen-River, L. – Molé, P. – Lonnerdall, B. – Dewey, K. (1999): Randomized Trial of the Short-term Effects of Dieting Compared with Dieting Plus Aerobic Exercise on Lactation Performance. The American Journal of Clinical nutrition, 69(5), 959–967. https://doi.org/10.1093/ajcn/69.5.959
Stanhope, K. (2016): Sugar Consumption, Metabolic Disease and Obesity: The State of the Controversy. Clinical laboratory science, 53(1), 52–67. https://doi.org/10.3109/10408363.2015.1084990
Tate, D. F. – Turner-McGrievy, G. – Lyons, E. – Stevens, J. – Erickson, K. – Polzien, K. –Diamond, M. – Wang, X. – Popkin, B. (2012): Replacing Caloric Beverages with Water or Diet Beverages for Weight Loss in Adults: Main Results of the Choose Healthy Options Consciously Everyday (CHOICE) Randomized Clinical Trial. The American Journal of Clinical Nutrition, 95(3), 555–63. https://doi.org/10.3945/ajcn.111.026278
Vartanian, L. R. – Schwartz, M. B. – Brownell, K. D. (2007): Effects of Soft Drink Consumption on Nutrition and Health: A Systematic Review and Meta-Analysis. American Journal of Public Health, 97(4), 667–675. https://doi.org/10.2105/AJPH.2005.083782
WHO (2015): Sugar Intake for Adults and Children. Genewa: WHO Document Production Services.
White, J. M. – Wolraich, M. (1995): Effect of sugar on behavior and mental performance. American Journal of Clinical Nutrition, 65(1), 242–247. https://doi.org/10.1093/ajcn/62.1.242S
Wolraich, M. L. – Lindgren, S. D. – Stumbo, P. J. – Stegink, L. D. – Appelbaum, M. I. – Kiritsy, M. C. (1994): Effects of Diets High in Sucrose or Aspartame on the Behaviour and Cognitive Performance of Children. The New England Journal of Medicine, 5(330), 301–306.
Copyright © 2017 Joany Lizet Hernández, Jiří Čeněk, Martin Čuta