Diet and sleep quality in university students
DOI:
https://doi.org/10.47197/retos.v73.117943Keywords:
Diet, sleep, mental health, university students, chronotypeAbstract
Introduction: Diet and sleep quality are fundamental and determining factors for the overall well-being of university students.
Objective: To assess the quality of diet and sleep among university students.
Methodology: A cross-sectional, descriptive, and observational study was conducted with a sample of 1,871 students from a public university in the city of Guayaquil. To assess diet quality, the validated Healthy Eating Index questionnaire was used, while sleep quality was measured using the Pittsburgh Sleep Quality Index (PSQI).
Results: The data showed that the majority of both male and female participants reported daily consumption of cereals and derivatives (62.6%), as well as meats (76.5%). Weekly intake (1 to 2 times per week) was observed for vegetables (36.1%), fruits (27.2%), dairy products (41%), processed meats (27.6%), and sweets (28.7%). Legumes (33.5%) and sugar-sweetened beverages (32.5%) were consumed three or more times per week, but not daily. According to the Healthy Eating Index, 56.7% of participants required dietary changes, with 98.6% lacking variety in their food intake. Regarding sleep quality, 62.8% of the students were found to have poor sleep quality.
Discussion: The findings of this study are consistent with, and in some cases contrast with, previous research conducted on university student populations.
Conclusions: Although no association was found between diet quality and sleep quality, a high prevalence of poor sleep and inadequate eating habits was evident among the participants.
References
Alpi, S. V., Sierra, J. M. Q., Chica, G. D., Unigarro, C. R., Yepes, O. C. R., Saldarriaga, C. A. M., & Bernal, S. (2021). Dieta mediterránea y calidad de sueño en una muestra poblacional universitaria de la ciudad de Medellín, Colombia. Nutrición Clínica y Dietética Hospitalaria, 41(4).
Bosch, M., Riumalló, M. P., & Morgado, M. (2021). Conociendo el sueño: beneficios y trastornos. ESE Business School Chile, 18, 2-6.
Bastías, E., & Stiepovich, J. (2014). Una revisión de los estilos de vida de estudiantes universitarios ibe-roamericanos. Ciencia y Enfermería, 20(2), 93–101. https://doi.org/10.4067/S0717-95532014000200009
Budnick, S., Smith, J., & Johnson, L. (2025). A cross-sectional analysis of college students' diet, mental health and hindrances to healthy lifestyles. Journal of Health Psychology, 30(5), 1234-1245. https://doi.org/10.1177/15598276251315347
Castelli, L., Galasso, L., Ciorciari, A., Michielon, G., Esposito, F., Roveda, E., & Montaruli, A. (2025). Life-style of Italian university students attending different degree courses: A survey on physical ac-tivity, sleep and eating behaviors during the COVID-19 pandemic. Sustainability, 14(22), 1699-1710. https://doi.org/10.3390/su142215340
Constanza Díaz, C., Miranda, Camila Risco, Durán-Agüero, Samuel, Johns, Priscila Candia & Díaz-Vásquez, Waldo (2023). "Association between diet, mental health and sleep quality in university students during the COVID-19 pandemic: a systematic review". International Journal of Adoles-cent Medicine and Health, 35 (6), 429-436. https://doi.org/10.1515/ijamh-2023-0077
Cherasse, Y., & Urade, Y. (2017). Dietary zinc acts as a sleep modulator. International Journal of Molec-ular Sciences, 18(11), 2334. https://doi.org/10.3390/ijms18112334
Dunlu, G. D., Bilgin, G. D., & Bilgin, G. D. (2025). Morning lark or night owl? Understanding the role of sleep quality and chronotype on dietary quality and hedonic hunger in university students. Chronobiology International, 42(9), 1194-1206. https://doi.org/10.1080/07420528.2025.2536519
Durlach, J., Pagès, N., Bac, P., Bara, M., & Guiet-Bara, A. (2002). Biorhythms and possible central regula-tion of magnesium status, phototherapy, darkness therapy and chrono-pathological forms of magnesium depletion. Magnesium Research, 15(1–2), 49–66.
Estrada-Araoz, E. G., Yana-Salluca, M., Bautista-Quispe, J. A., Churayra-Chura, J. E., Quispe-Loaiza, M. Y., Ticona-Arapa, H. C., Cutipa-Luque, R., & Poma-Mollocondo, R. S. (2025). ¿El cansancio emocio-nal y los hábitos alimentarios predicen la calidad del sueño de los estudiantes universitarios? Un estudio desde la perspectiva de la salud y el bienestar. Retos, 71, 59-71. https://doi.org/10.47197/retos.v71.116532
Faris, M. E., Vitiello, M. V., Abdelrahim, D. N., Cheikh Ismail, L., Jahrami, H. A., Khaleel, S., ... & Ba-hammam, A. S. (2022). Eating habits are associated with subjective sleep quality outcomes among university students: Findings of a cross-sectional study. Sleep and Breathing, 26(3), 1365–1376. https://doi.org/10.1007/s11325-021-02542-5
Kada, C., et al. (2019). The association of having a late dinner or bedtime snack and skipping breakfast with overweight in Japanese women. Journal of Obesity, 2019, 2439571. https://doi.org/10.1155/2019/2439571
Khraiwesh H, Alkhatib B, Hasan H, Mahmoud IF & Agraib LM (2023). The impact of sleep quality, meal timing, and frequency on diet quality among remote learning university students during the COVID-19 pandemic. International Journal of Advanced and Applied Sciences, 10(5), 166-176. https://doi.org/10.21833/ijaas.2023.05.020
López Malque, J. J., Chanducas Lozano, B., Calizaya-Milla, Y. E., Calizaya-Milla, S. E., Morales-García, W. C., & Saintila, J. (2023). Relación entre calidad del sueño, hábitos alimentarios y perfil antropo-métrico en adolescentes: Una en-cuesta transversal (Relationship between sleep quality, eating habits, and anthropometric profile in adolescents: A cross-sectional survey). Retos, 48, 341-348. https://doi.org/10.47197/retos.v48.96283
Mulè, A., Galasso, L., Castelli, L., Ciorciari, A., Michielon, G., Esposito, F., Roveda, E., & Montaruli, A. (2022). Lifestyle of Italian University Students Attending Different Degree Courses: A Survey on Physical Activity, Sleep and Eating Behaviors during the COVID-19 Pandemic. Sustainability, 14(22), 1-12. https://doi.org/10.3390/su142215340
Naja F., Hasan H., Khadem S., Buanq M., Al-Mulla H., Aljassmi A. & Faris M. (2022). Adherence to the mediterranean diet and its association with sleep quality and chronotype among youth: a cross-sectional study. Frontiers in Nutrition, 8(4), 1-12. https://doi.org/10.3389/fnut.2021.805955
Norte Navarro, A. I., & Ortiz Moncada, R. (2011). Calidad de la dieta española según el índice de alimen-tación saludable. Nutrición Hospitalaria, 26(2), 330–336. https://doi.org/10.1590/S0212-16112011000200015
Organización Mundial de la Salud. (2023). Obesidad y sobrepeso. https://www.who.int/es/news-room/fact-sheets/detail/obesity-and-overweight
Organización Mundial de la Salud. (2023). Dieta saludable. https://www.who.int/es/news-room/fact-sheets/detail/healthy-diet
Ordoñez, Y., Pérez, S., & González, M. (2024). Diet and sleep quality in Chilean university students. Jour-nal of Sleep Research, 36(5), 441-448. https://doi.org/10.1515/ijamh-2024-0120
Ramón-Arbués, E., Martínez-Abadía, B., Granada-López, J. M., Echániz-Serrano, E., Antón-Solanas, I., Casamayor-Borda, A., & Juárez-Vela, R. (2022). Eating behavior and relationships with sleep quality and body mass index in college students. Frontiers in Nutrition, 9, 896563. https://doi.org/10.3389/fnut.2022.896563
Royuela, A., & Fernández, J. (1997). Propiedades clinimétricas de la versión castellana del cuestionario de Pittsburgh. Vigilia-Sueño, 9(2), 81-94.
Sánchez, Z. S. (2020). Relación del estrés y la calidad de sueño en estudiantes universitarios: Revisión bibliográfica. Anuario de Investigación UM, 1(1), 272–283.
Savage, M. J., Smith, L., & Williams, S. (2024). Characterising the activity, lifestyle behaviours and health outcomes of UK university students: An observational cohort study with a focus on gender and ethnicity. BMC Public Health, 24 (1), 1-13. https://doi.org/10.1186/s12889-024-20911-0
Teixeira, G. P., Mota, M. C., & Crispim, C. A. (2018). Eveningness is associated with skipping breakfast and poor nutritional intake in Brazilian undergraduate students. Chronobiology International, 35(3), 358–367. https://doi.org/10.1080/07420528.2017.1407777
Ünal, G., & Özenoğlu, A. (2025). Association of Mediterranean diet with sleep quality, depression, anxie-ty, stress and body mass index in university students: A cross-sectional study. Journal of Nutri-tion, 10(8), 659-666. https://doi.org/10.3390/nu10080966
Valle Flores, J. A., Rosado Álvarez, M. M., Hidalgo Torres, J. L., Villamar Vásquez, G. I., Jurado Auria, S. A., Valenzuela Burbano, K. G., & Bazurto Hidalgo, C. E. (2025). Relación entre actividad física y la calidad del sueño en estudiantes universitarios: estudio transversal. Retos, 68, 1477-1486. https://doi.org/10.47197/retos.v68.116008
Vera, V., Oñate, G., Fernández, M., Valladares, M., Crovetto, M., Espinoza, V., Mena, F., & Agüero, S. D. (2021). Tobacco consumption in Chilean university students and associations with anthropom-etry, eating habits and sleep quality: Multicentric study. Journal of Preventive Medicine and Hy-giene, 62(2), E430–E438. https://doi.org/10.15167/2421-4248/jpmh2021.62.2.1868
Wilson, K., St-Onge, M. P., & Tasali, E. (2022). Diet composition and objectively assessed sleep quality: A narrative review. Journal of the Academy of Nutrition and Dietetics, 122(6), 1182–1195. https://doi.org/10.1016/j.jand.2022.02.003
Downloads
Published
Issue
Section
License
Copyright (c) 2025 Ruth Adriana Yaguachi-Alarcón, Anthonny Luis Yaguachi-Alarcón, Darley Jhosue Burgos-Angulo, Ricardo Giuseppe Vera-Unda, Edinson Santiago Morales-Prado, José Geovanny Boza-Mendoza, Walter Adalberto González-Garcia

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and ensure the magazine the right to be the first publication of the work as licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of authorship of the work and the initial publication in this magazine.
- Authors can establish separate additional agreements for non-exclusive distribution of the version of the work published in the journal (eg, to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Is allowed and authors are encouraged to disseminate their work electronically (eg, in institutional repositories or on their own website) prior to and during the submission process, as it can lead to productive exchanges, as well as to a subpoena more Early and more of published work (See The Effect of Open Access) (in English).
This journal provides immediate open access to its content (BOAI, http://legacy.earlham.edu/~peters/fos/boaifaq.htm#openaccess) on the principle that making research freely available to the public supports a greater global exchange of knowledge. The authors may download the papers from the journal website, or will be provided with the PDF version of the article via e-mail.