Relationships between milk consumption and academic performance, learning motivation and strategy, and personality in Korean adolescents

  • Kim, Sun Hyo (Department of Technology and Home Economics Education, Kongju National University) ;
  • Kim, Woo Kyoung (Department of Food Science and Nutrition, Dankook University) ;
  • Kang, Myung-Hee (Department of Food Science and Nutrition, Hannam University)
  • Received : 2015.08.31
  • Accepted : 2015.12.08
  • Published : 2016.04.01


BACKGROUND/OBJECTIVES: A healthy diet has been reported to be associated with physical development, cognition and academic performance, and personality during adolescence. This study was performed to investigate the relationships among milk consumption and academic performance, learning motivation and strategies, and personality among Korean adolescents. SUBJECTS/METHODS: The study was divided into two parts. The first part was a survey on the relationship between milk consumption and academic performance, in which intakes of milk and milk products and academic scores were examined in percentiles among 630 middle and high school students residing in small and medium-sized cities in 2009. The second part was a survey on the relationships between milk consumption and learning motivation and strategy as well as personality, in which milk consumption habits were collected and Learning Motivation and Strategy Test (L-MOST) for adolescents and Total Personality Inventory for Adolescents (TPI-A) were conducted in 262 high school students in 2011. RESULTS: In the 2009 survey, milk and milk product intakes of subjects were divided into a low intake group (LM: ${\leq}60.2g/day$), medium intake group (MM: 60.3-150.9 g/day), and high intake group (HM: ${\geq}151.0g/day$). Academic performance of each group was expressed as a percentile, and performance in Korean, social science, and mathematics was significantly higher in the HM group (P < 0.05). In the 2011 survey, the group with a higher frequency of everyday milk consumption showed significantly higher "learning strategy total," "testing technique," and "resources management technique" scores (P < 0.05) in all subjects. However, when subjects were divided by gender, milk intake frequency, learning strategy total, class participation technique, and testing technique showed significantly positive correlations (P < 0.05) in boys, whereas no correlation was observed in girls. Correlations between milk intake frequency and each item of the personality test were only detected in boys, and milk intake frequency showed positive correlations with "total agreeability", "organization", "responsibility", "conscientiousness", and "intellectual curiosity" (P < 0.05). CONCLUSION: Intakes of milk and milk products were correlated with academic performance (Korean, social science, and mathematics) in Korean adolescents. In male high school students, particularly, higher milk intake frequency was positively correlated with learning motivation and strategy as well as some items of the personality inventory.


Supported by : Korea Dairy and Beef Farmers Association, Hannam University


  1. Oh YM, Kim MH, Sung CJ. Effects of school lunch program on nutritional knowledge and attitude, and dietary behavior of Korean middle school students. Korean J Community Nutr 2005;10:163-73.
  2. The Korean Nutrition Society. Dietary Reference Intakes for Koreans. Seoul: The Korean Nutrition Society; 2010.
  3. Sigfusdottir ID, Kristjansson AL, Allegrante JP. Health behaviour and academic achievement in Icelandic school children. Health Educ Res 2007;22:70-80.
  4. Petrescu C, Vlaicu B. Personality profiles and risk diet behaviors--a case-control study on teenagers from Timis County, Romania. Rev Med Chir Soc Med Nat Iasi 2014.118:503-7.
  5. Ministry of Health and Welfare, Korea Centers for Disease Control and Prevention. Korea Health Statistics 2012: Korea National Health and Nutrition Examination Survey (KNHANES V-3). Cheongwon: Korea Centers for Disease Control and Prevention; 2013.
  6. Kim JH. Analysis of the awareness of the value and the consumption pattern on milk of elementary middle and high school students. J Korean Home Econ Assoc 2007;45:23-33.
  7. Kim S, Kim W, Kang M. Survey on the relationship between milk and milk product consumption and dietary nutrient intake among Korean adolescents. J Korean Diet Assoc 2011;17:313-26.
  8. Wiley AS. Consumption of milk, but not other dairy products, is associated with height among US preschool children in NHANES 1999-2002. Ann Hum Biol 2009;36:125-38.
  9. Kim SH, Kim WK, Kang MH. Effect of milk and milk products consumption on physical growth and bone mineral density in Korean adolescents. Nutr Res Pract 2013;7:309-14.
  10. Han SS, Kim HY, Kim WK, Oh SY, Won HS, Lee HS, Jang YA, Kim SH. The relationships among household characteristics, nutrient intake status and academic achievements of primary, middle and high school students. Korean J Nutr 1999;32:691-704.
  11. Hulett JL, Weiss RE, Bwibo NO, Galal OM, Drorbaugh N, Neumann CG. Animal source foods have a positive impact on the primary school test scores of Kenyan schoolchildren in a cluster-randomised, controlled feeding intervention trial. Br J Nutr 2014;111:875-86.
  12. MacLellan D, Taylor J, Wood K. Food intake and academic performance among adolescents. Can J Diet Pract Res 2008;69:141-4.
  13. Kim HC. L-Most: for Adolescent. Seoul: Korea Psychological Services; 2011.
  14. Kim HC. Total Personality Inventory: for Adolescent. Seoul: Korea Psychological Services; 2011.
  15. Ministry of Health and Welfare, Korea Centers for Disease Control and Prevention. Korea Health Statistics 2013: Korea National Health and Nutrition Examination Survey (KNHANES VI-1). Cheongwon: Korea Centers for Disease Control and Prevention; 2014.
  16. Bowman SA. Beverage choices of young females: changes and impact on nutrient intakes. J Am Diet Assoc 2002;102:1234-9.
  17. Waches TD. Necessary but not Sufficient: The Respective Roles of Single and Multiple Influences on Individual Development. Washington, D.C.: American Psychological Association; 2000.
  18. Bellisle F. Effects of diet on behaviour and cognition in children. Br J Nutr 2004;92 Suppl 2:S227-32.
  19. Pollitt E. Malnutrition and Infection in the Classroom. Paris: United Nations Educational, Scientific and Cultural Organization; 1990.
  20. Grantham-McGregor S. A review of studies of the effect of severe malnutrition on mental development. J Nutr 1995;125:2233S-2238S.
  21. Jukes M. The long-term impact of preschool health and nutrition on education. Food Nutr Bull 2005;26:S193-201.
  22. Galler JR, Ramsey FC, Morley DS, Archer E, Salt P; Performance on the National High School Entrance Examination. The long-term effects of early kwashiorkor compared with marasmus. IV. Performance on the national high school entrance examination. Pediatr Res 1990;28:235-9.
  23. Grantham-McGregor S, Schofield W, Haggard D. Maternal-child interaction in survivors of severe malnutrition who received psychosocial stimulation. Eur J Clin Nutr 1989.43:45-52.
  24. Carruyo-Vizcaino C, Vizcaino G, Diez-Ewald M, Arteaga-Vizcaino M, Torres-Guerra E. Hemoglobin and nutrient concentration in middle-class adolescents. Relationship with school performance. Invest Clin 1995.36:117-30.
  25. Taras H. Nutrition and student performance at school. J Sch Health 2005;75:199-213.
  26. Edwards JU, Mauch L, Winkelman MR. Relationship of nutrition and physical activity behaviors and fitness measures to academic performance for sixth graders in a midwest city school district. J Sch Health 2011;81:65-73.
  27. Costa PT Jr, McCrae RR. The NEO Personality Inventory: Manual. Odessa (FL): Psychological Assessment Resources; 1985.
  28. Lee WJ, Kim YH. Adolescents' Personalities, Ego-Resilience, and School Adjustment. J Hum Ecol 2012;16:69-83.
  29. van den Bree MB, Przybeck TR, Robert Cloninger C. Diet and personality: associations in a population-based sample. Appetite 2006;46:177-88.
  30. Austin SB, Nelson LA, Birkett MA, Calzo JP, Everett B. Eating disorder symptoms and obesity at the intersections of gender, ethnicity, and sexual orientation in US high school students. Am J Public Health 2013;103:e16-22.
  31. Szczepanska E, Szeja N, Szymkiewicz A, Kowalska A, Lenard B, Bulwicka A. Eating behaviours of middle- and secondary-school pupils from the upper Silesian region in Poland. Rocz Panstw Zakl Hig 2014;65:337-44.
  32. Lee MY, Choi EM, Chung WG, Son JH, Chang SJ. The effects of perceived stress on dietary habits and oral health behaviors in Korean adolescents. J Dent Hyg Sci 2013;13:440-8.
  33. Kwon JE, Park HJ, Lim HS, Chyun JH. The relationships of dietary behavior, food intake, and life satisfaction with family meal frequency in middle school students. Korean J Food Cult 2013;28:272-81.

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