Impact of Caffeine use on Adults' Sleep & Memory
DOI:
https://doi.org/10.36755//themind.v4i1.21Keywords:
Caffeine Use, Memory, Sleep, AdultsAbstract
This study aimed to investigate the relationships between caffeine consumption, sleep quality, and memory performance among adults aged 26 to 44 years. Using a correlational research design, 100 participants from Allied Hospital II in Faisalabad, Pakistan, were recruited through purposive sampling. Participants completed three standardized and validated questionnaires: the Caffeine Consumption Questionnaire (CCQ), the Cognitive Failures Questionnaire (CFQ), and the Pittsburgh Sleep Quality Index (PSQI). Descriptive analyses indicated moderate caffeine consumption and variable cognitive failures and sleep quality across the sample. Correlational analyses revealed significant positive relationships among caffeine intake, cognitive lapses, and sleep quality. Multiple linear regression analysis demonstrated that caffeine consumption, cognitive failure, and sleep quality together explained 33% of the variance in the dependent outcome, with each predictor showing significant contributions. Independent samples t-tests identified gender differences, with females reporting higher caffeine intake and poorer sleep quality compared to males, while cognitive failure scores were similar across genders. The findings suggest that habitual caffeine use may influence cognitive functioning, particularly long-term memory, and that sleep quality is an important factor interrelated with both caffeine consumption and cognitive performance. These results highlight the importance of considering lifestyle factors such as caffeine intake in cognitive and behavioral health research. Limitations related to self-reported data and cross-sectional design are acknowledged. Future research using longitudinal methods and more diverse populations is recommended to clarify causal pathways and inform tailored public health guidelines on caffeine use.
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References
Addicott, M. A. (2023). Caffeine’s effects on sleep dependent memory consolidation. Neuroscience & Biobehavioral Reviews, 148, 105131. https://doi.org/10.1016/j.neubiorev.2023.105131
Borota, D., Murray, E., Keceli, G., Chang, A., Watabe, J. M., Ly, M., Toscano, J. P., & Yassa, M. A. (2021). Differential effects of caffeine on memory subsystems. Neuropharmacology, 197, 108736. https://doi.org/10.1016/j.neuropharm.2021.108736
Centers for Disease Control and Prevention. (2020). Short sleep duration among US adults. https://www.cdc.gov/sleep/data_statistics.html
Clark, I., Landolt, H. P., & Reichert, C. F. (2019). Caffeine as a countermeasure to sleep loss: Meta analysis of cognitive domains. Sleep Medicine Reviews, 46, 1–12. https://doi.org/10.1016/j.smrv.2019.04.006
Drake, C., Roehrs, T., Shambroom, J., & Roth, T. (2021). Caffeine effects on sleep taken 0, 3, or 6 hours before bedtime. Journal of Clinical Sleep Medicine, 17(2), 215–221. https://doi.org/10.5664/jcsm.8934
Heckman, M. A., Weil, J., & Gonzalez de Mejia, E. (2020). Caffeine (1,3,7 trimethylxanthine) in foods: A comprehensive review on consumption, functionality, safety, and regulatory matters. Journal of Food Science, 85(3), 503–512. https://doi.org/10.1111/1750-3841.15023
Irish, L. A., Kline, C. E., Rothenberger, S. D., Krafty, R. T., Buysse, D. J., Kravitz, H. M., & Bromberger, J. T. (2023). Sleep hygiene practice mediates caffeine–sleep relationships. Sleep Health, 9(1), 12–19. https://doi.org/10.1016/j.sleh.2022.08.006
Nehlig, A. (2020). Interindividual differences in caffeine metabolism and impacts on cognition. Pharmacological Reviews, 72(3), 732–767. https://doi.org/10.1124/pr.119.019406
O’Callaghan, F., Muurlink, O., & Reid, N. (2022). Effects of caffeine on sleep quality and daytime functioning. Psychopharmacology, 239(8), 2311–2322. https://doi.org/10.1007/s00213-022-06146-0
Poole, R., Kennedy, O. J., Roderick, P., Fallowfield, J. A., Hayes, P. C., & Parkes, J. (2023). Variability in caffeine content of commercial beverages. Food Chemistry, 405(B), 134969. https://doi.org/10.1016/j.foodchem.2022.134969
Reichert, C. F., Veitz, S., Bühler, M., Gruber, G., Deuring, G., & Bachmann, V. (2021). Age related differences in caffeine elimination. Nature and Science of Sleep, 13, 31–40. https://doi.org/10.2147/NSS.S285427
Reyes, C. M., & Cornelis, M. C. (2021). Caffeine in the diet: Country level consumption and guidelines. Nutrients, 13(3), 736. https://doi.org/10.3390/nu13030736
Rogers, P. J., & Smith, J. E. (2023). Caffeine and cognitive performance: Mechanisms of action. Neuroscience & Biobehavioral Reviews, 147, 105108. https://doi.org/10.1016/j.neubiorev.2023.105108
Smith, A. P., Brockman, P., Flynn, R., Maben, A., & Thomas, M. (2020). Investigation of the effects of coffee on alertness and performance during the day and night. Journal of Psychopharmacology, 34(6), 625–635. https://doi.org/10.1177/0269881120904613
Sünram Lea, S. I., Owen Lynch, J., & Robinson, S. J. (2022). Gender differences in caffeine effects: Implications for memory and sleep. Aging & Mental Health, 26(5), 921–929. https://doi.org/10.1080/13607863.2021.1913474
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Copyright (c) 2025 Samreen Afzal, Imtiaz Ahmad Dogar, Kainat Shehzadi, Ayesha Tariq, Wajeeha Andleeb (Author)
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