An inquiry into plant-based diet for achieving sustainable goals

Chin Wei Chong, Wendy Ming Yen Teoh, Adedapo O. Ojo, Hui Suan Wei

Article ID: 11232
Vol 9, Issue 2, 2025


Abstract


This research addresses environmental, ethical, and health concerns related to high meat consumption, and aims to identify key predictors that encourage a shift towards sustainable diets among young adults. A cross-sectional survey involving 340 students from ten Malaysian universities was conducted using a structured questionnaire. The findings indicate that attitudes, subjective norms, perceived behavioral control, and personal norms significantly predict the intention to adopt plant-based diets. These results have practical implications, suggesting that policymakers, educators, and health professionals should create supportive environments and educational programs that emphasize the benefits of plant-based diets and equip students with the necessary knowledge and skills. Theoretically, the study reinforces the TPB framework’s applicability in understanding dietary behaviors and underscores the importance of personal and social factors in shaping dietary intentions. Ultimately, promoting plant-based diets among university students necessitates a comprehensive approach and strategy addressing attitudes, social norms, perceived control, and personal values. By leveraging these insights, stakeholders can foster sustainable and healthy eating practices among young adults, contributing to broader environmental and public health objectives for sustainable development.


Keywords


plant-based diets, theory of planned behavior (TPB), sustainable diet, dietary intentions, environmental sustainability

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References


Aaltola, E. (2012). Animal Suffering: Philosophy and Culture. Palgrave Macmillan UK. https://doi.org/10.1057/9781137271822

Ajzen, I. (1991). The theory of planned behavior. Organizational Behavior and Human Decision Processes, 50(2), 179–211. https://doi.org/10.1016/0749-59789190020-T

Ajzen, I. (2011). The theory of planned behaviour: Reactions and reflections. Psychology & Health, 26(9), 1113–1127. https://doi.org/10.1080/08870446.2011.613995

Ajzen, I. (2016). Consumer attitudes and behavior: The theory of planned behavior applied to food consumption decisions. Riv. Econ. Agrar. Econ. Agrar, 70, 121–138.

Alae-Carew, C., Green, R., Stewart, C., et al. (2022). The role of plant-based alternative foods in sustainable and healthy food systems: Consumption trends in the UK. Science of The Total Environment, 807, 151041. https://doi.org/10.1016/j.scitotenv.2021.151041

Brown, N. (2022). 7 reasons why meat is bad for the environment. Greenpeace.

Bryant, C. J. (2019). We Can’t Keep Meating Like This: Attitudes towards Vegetarian and Vegan Diets in the United Kingdom. Sustainability, 11(23), 6844. https://doi.org/10.3390/su11236844

Carfora, V., Caso, D., & Conner, M. (2017). Randomised controlled trial of a text messaging intervention for reducing processed meat consumption: The mediating roles of anticipated regret and intention. Appetite, 117, 152–160. https://doi.org/10.1016/j.appet.2017.06.025

Channel News Asia. (2024). The environmental impact of meat consumption in Malaysia. Channel News Asia.

Chen, M.-F. (2023). Consumer food choice motives and willingness to try plant-based meat: moderating effect of meat attachment. British Food Journal, 126(3), 1301–1324. https://doi.org/10.1108/bfj-04-2023-0330

Chin, W. W., Marcolin, B. L., & Newsted, P. R. (2003). A Partial Least Squares Latent Variable Modeling Approach for Measuring Interaction Effects: Results from a Monte Carlo Simulation Study and an Electronic-Mail Emotion/Adoption Study. Information Systems Research, 14(2), 189–217. https://doi.org/10.1287/isre.14.2.189.16018

Cisternas, F., Sun, C., Contador, C. A., et al. (2024). Cultural and generational factors shape Asians’ sustainable food choices: Insights from choice experiments and information nudges. Cell Reports Sustainability, 1(2), 100020. https://doi.org/10.1016/j.crsus.2024.100020

Cohen, J. (1998). Statistical Power Analysis for the Behavioral Sciences. Routledge.

Conner, M. T., & Sparks, P. (2015). The theory of planned behavior and reasoned action approach. In: Conner, M. T., & Norman, P. (editors). Predicting and changing health behaviour: Research and practice with social cognition models, 3rd ed. Wiley. pp. 142–188.

Daly, A. N., O’Sullivan, E. J., & Kearney, J. M. (2022). Considerations for health and food choice in adolescents. Proceedings of the Nutrition Society, 81(1), 75–86. https://doi.org/10.1017/s0029665121003827

Dhont, K., & Ioannidou, M. (2024). Similarities and differences between vegetarians and vegans in motives for meat-free and plant-based diets. Appetite, 195, 107232. https://doi.org/10.1016/j.appet.2024.107232

Drolet-Labelle, V., Laurin, D., Bédard, A., et al. (2023). Beliefs underlying older adults’ intention to consume plant-based protein foods: A qualitative study. Appetite, 180, 106346. https://doi.org/10.1016/j.appet.2022.106346

D’Souza, C., Brouwer, A. R., & Singaraju, S. (2022). Veganism: Theory of planned behaviour, ethical concerns and the moderating role of catalytic experiences. Journal of Retailing and Consumer Services, 66, 102952. https://doi.org/10.1016/j.jretconser.2022.102952

Faber, I., Rini, L., Schouteten, J. J., et al. (2024). The mediating role of barriers and trust on the intentions to consume plant-based foods in Europe. Food Quality and Preference, 114, 105101. https://doi.org/10.1016/j.foodqual.2024.105101

FAO. (2017). Livestock solutions for climate change mitigation. Food and Agriculture Organization of the United Nations.

Fawcett, S. E., Waller, M. A., Miller, J. W., et al. (2014). A Trail Guide to Publishing Success: Tips on Writing Influential Conceptual, Qualitative, and Survey Research. Journal of Business Logistics, 35(1), 1–16. Portico. https://doi.org/10.1111/jbl.12039

Fehér, A., Gazdecki, M., Véha, M., et al. (2020). A Comprehensive Review of the Benefits of and the Barriers to the Switch to a Plant-Based Diet. Sustainability, 12(10), 4136. https://doi.org/10.3390/su12104136

Fishbein, M., & Ajzen, I. (2010). Predicting and changing behavior: The reasoned action approach. Psychology Press.

Fresán, U., & Sabaté, J. (2019). Vegetarian Diets: Planetary Health and Its Alignment with Human Health. Advances in Nutrition, 10, S380–S388. https://doi.org/10.1093/advances/nmz019

FoodPrint. (2022). The water footprint of food. Available online: https://foodprint.org/issues/the-water-footprint-of-food/ (accessed on 4 June 2024).

Fornell, C., & Larcker, D. F. (1981). Evaluating Structural Equation Models with Unobservable Variables and Measurement Error. Journal of Marketing Research, 18(1), 39–50. https://doi.org/10.1177/002224378101800104

Gavrilets, S., Tverskoi, D., & Sánchez, A. (2024). Modelling social norms: an integration of the norm-utility approach with beliefs dynamics. Philosophical Transactions of the Royal Society B: Biological Sciences, 379(1897). https://doi.org/10.1098/rstb.2023.0027

Gifford, R., Lacroix, K., Asgarizadeh, Z., et al. (2024). Applying the theory of behavioral choice to plant-based dietary intentions. Appetite, 197, 107271. https://doi.org/10.1016/j.appet.2024.107271

Giromini, C., & Givens, D. I. (2022). Benefits and Risks Associated with Meat Consumption during Key Life Processes and in Relation to the Risk of Chronic Diseases. Foods, 11(14), 2063. https://doi.org/10.3390/foods11142063

Graça, J., Godinho, C. A., & Truninger, M. (2019). Reducing meat consumption and following plant-based diets: Current evidence and future directions to inform integrated transitions. Trends in Food Science & Technology, 91, 380–390. https://doi.org/10.1016/j.tifs.2019.07.046

Grønhøj, A., & Thøgersen, J. (2009). Like father, like son? Intergenerational transmission of values, attitudes, and behaviours in the environmental domain. Journal of Environmental Psychology, 29(4), 414–421. https://doi.org/10.1016/j.jenvp.2009.05.002

Grossi, G., Goglio, P., Vitali, A., et al. (2018). Livestock and climate change: impact of livestock on climate and mitigation strategies. Animal Frontiers, 9(1), 69–76. https://doi.org/10.1093/af/vfy034

Guide, V. D., Ketokivi, M. (2015). Notes from the editors: Redefining some methodological criteria for the journal. Journal of Operations Management, 37, v–viii.

Hagger, M. S. (2019). The reasoned action approach and the theories of reasoned action and planned behavior. In: Dunn, D. S. (editors). Oxford bibliographies in psychology. Oxford University Press.

Hagger, M. S., & Hamilton, K. (2024). Longitudinal tests of the theory of planned behaviour: A meta-analysis. European Review of Social Psychology, 35(1), 198–254. https://doi.org/10.1080/10463283.2023.2225897

Han, H. (2014). The norm activation model and theory-broadening: Individuals’ decision-making on environmentally-responsible convention attendance. Journal of Environmental Psychology, 40, 462–471. https://doi.org/10.1016/j.jenvp.2014.10.006

Hair, J. F., Hult, G. T. M., Ringle, C. M., & Sarstedt, M. (2017). A primer on partial least squares structural equation modeling (PLS-SEM), 2nd ed. SAGE Publications.

Hardin-Fanning, F., & Ricks, J. M. (2017). Attitudes, social norms and perceived behavioral control factors influencing participation in a cooking skills program in rural Central Appalachia. Global Health Promotion, 24(4), 43–52. https://doi.org/10.1177/1757975916636792

Hargreaves, S. M., Rosenfeld, D. L., Moreira, A. V. B., et al. (2023). Plant-based and vegetarian diets: an overview and definition of these dietary patterns. European Journal of Nutrition, 62(3), 1109–1121. https://doi.org/10.1007/s00394-023-03086-z

Hickman, C., Marks, E., Pihkala, P., et al. (2021). Climate anxiety in children and young people and their beliefs about government responses to climate change: a global survey. The Lancet. Planetary health, 5(12), e863–e873. https://doi.org/10.1016/S2542-5196(21)00278-3

Hyry, J. (2021). Climate emotions: summary of key findings. Available online: https://www.sitra.fi/app/uploads/2019/11/sitraclimate-emotions-report-2019.pdf (accessed on 4 June 2024).

International Agency for Research on Cancer. (2018). IARC Monographs on the Evaluation of Carcinogenic Risks to Humans. World Health Organisation (WHO).

Krizanova, J., Rosenfeld, D. L., Tomiyama, A. J., et al. (2021). Pro-environmental behavior predicts adherence to plant-based diets. Appetite, 163, 105243. https://doi.org/10.1016/j.appet.2021.105243

Landry, M. J., & Ward, C. P. (2024). Health Benefits of a Plant-Based Dietary Pattern and Implementation in Healthcare and Clinical Practice. American Journal of Lifestyle Medicine, 18(5), 657–665. https://doi.org/10.1177/15598276241237766

Léger-Goodes, T., Malboeuf-Hurtubise, C., Mastine, T., et al. (2022). Eco-anxiety in children: A scoping review of the mental health impacts of the awareness of climate change. Frontiers in Psychology, 13. https://doi.org/10.3389/fpsyg.2022.872544

Lymbery, P., & Oakeshott, I. (2014). Farmageddon: The true cost of CheapMeat. Bloomsbury Publishing.

Macdiarmid, J. I., Douglas, F., & Campbell, J. (2016). Eating like there’s no tomorrow: Public awareness of the environmental impact of food and reluctance to eat less meat as part of a sustainable diet. Appetite, 96, 487–493. https://doi.org/10.1016/j.appet.2015.10.011

McGrath, M. (2018). Climate change: Warming gas concentrations at new record high. Available online: https://www.bbc.co.uk/ (accessed on 4 June 2024).

McInnes, C., Carstairs, S. A., & Cecil, J. E. (2023). A qualitative study of young peoples’ thoughts and attitudes to follow a more plant-based diet. Frontiers in Psychology, 14. https://doi.org/10.3389/fpsyg.2023.1196142

Miki, A. J., Livingston, K. A., Karlsen, M. C., et al. (2020). Using Evidence Mapping to Examine Motivations for Following Plant-Based Diets. Current Developments in Nutrition, 4(3), nzaa013. https://doi.org/10.1093/cdn/nzaa013

Mohd Iza Ney, M. D. A., Karunagara, S., Praveen, S., et al. (2022). Understanding Household’s Intention of Recycling Clothes: An Extension of TPB with Lack of Facilities and Social Media Usage. International Journal of Management, Finance and Accounting, 3(2), 31–41. CLOCKSS. https://doi.org/10.33093/ijomfa.2022.3.2.3

Mustapa, M. A. C., Kallas, Z., Silande, C., et al. (2024). From taste to purchase: Understanding the influence of sensory perceptions and informed tasting on plant-based product purchases—An extension of the theory of planned behavior. Journal of Agriculture and Food Research, 16, 101188. https://doi.org/10.1016/j.jafr.2024.101188

Mullee, A., Vermeire, L., Vanaelst, B., et al. (2017). Vegetarianism and meat consumption: A comparison of attitudes and beliefs between vegetarian, semi-vegetarian, and omnivorous subjects in Belgium. Appetite, 114, 299–305. https://doi.org/10.1016/j.appet.2017.03.052

Nevalainen, E., Niva, M., & Vainio, A. (2023). A transition towards plant-based diets on its way? Consumers’ substitutions of meat in their diets in Finland. Food Quality and Preference, 104, 104754. https://doi.org/10.1016/j.foodqual.2022.104754

North, M., Klas, A., Ling, M., et al. (2021). A qualitative examination of the motivations behind vegan, vegetarian, and omnivore diets in an Australian population. Appetite, 167, 105614. https://doi.org/10.1016/j.appet.2021.105614

Ojala, M. (2022). Prefiguring sustainable futures? Young people’s strategies to deal with conflicts about climate-friendly food choices and implications for transformative learning. Environmental Education Research, 28(8), 1157–1174. https://doi.org/10.1080/13504622.2022.2036326

Ojo, A. O. (2022). Motivational factors of pro-environmental behaviors among information technology professionals. Review of Managerial Science, 16(6), 1853–1876. https://doi.org/10.1007/s11846-021-00497-2

Onwezen, M. C., Bouwman, E. P., Reinders, M. J., et al. (2021). A systematic review on consumer acceptance of alternative proteins: Pulses, algae, insects, plant-based meat alternatives, and cultured meat. Appetite, 159, 105058. https://doi.org/10.1016/j.appet.2020.105058

Pandey, S., Ritz, C., & Perez-Cueto, F. J. A. (2021). An Application of the Theory of Planned Behaviour to Predict Intention to Consume Plant-Based Yogurt Alternatives. Foods, 10(1), 148. https://doi.org/10.3390/foods10010148

Pang, S. M., Tan, B. C., & Lau, T. C. (2021). Antecedents of Consumers’ Purchase Intention towards Organic Food: Integration of Theory of Planned Behavior and Protection Motivation Theory. Sustainability, 13(9), 5218. https://doi.org/10.3390/su13095218

Peng, D. X., & Lai, F. (2012). Using partial least squares in operations management research: A practical guideline and summary of past research. Journal of Operations Management, 30(6), 467–480. Portico. https://doi.org/10.1016/j.jom.2012.06.002

Podsakoff, P. M., MacKenzie, S. B., Lee, J.-Y., et al. (2003). Common method biases in behavioral research: A critical review of the literature and recommended remedies. Journal of Applied Psychology, 88(5), 879–903. https://doi.org/10.1037/0021-9010.88.5.879

Preacher, K. J., & Hayes, A. F. (2008). Asymptotic and resampling strategies for assessing and comparing indirect effects in multiple mediator models. Behavior Research Methods, 40(3), 879–891. https://doi.org/10.3758/brm.40.3.879

Randall, T., Cousins, A. L., Neilson, L., et al. (2024). Sustainable food consumption across Western and Non-Western cultures: A scoping review considering the theory of planned behaviour. Food Quality and Preference, 114, 105086. https://doi.org/10.1016/j.foodqual.2023.105086

Savari, M., Damaneh, H. E., Damaneh, H. E., et al. (2023). Integrating the norm activation model and theory of planned behaviour to investigate farmer pro-environmental behavioural intention. Scientific Reports, 13(1). https://doi.org/10.1038/s41598-023-32831-x

Schultz, P. W., Oskamp, S., & Mainieri, T. (1995). Who recycles and when? A review of personal and situational factors. Journal of Environmental Psychology. https://doi.org/10.1016/0272-4944(95)90019-

Schwartz, J. E. (1977). An Examination of Concor and Related Methods for Blocking Sociometric Data. Sociological Methodology, 8, 255. https://doi.org/10.2307/270759

Siddharta, A. (2024). Meat consumption per capita in Malaysia in 2023, by type. Available online: https://www.statista.com/statistics/756920/malaysia-meat-consumption-per-capita-by-type/ (accessed on 4 June 2024).

Singer, P. (1975). Animal Liberation. Harper Collins.

Su, C. H., Tsai, C. H., Chen, M. H., & Lv, W. Q. (2019). U.S. Sustainable Food Market Generation Z Consumer Segments. Sustainability, 11(13), 3607. https://doi.org/10.3390/su11133607

Tarrega, A., Rizo, A., Murciano, A., et al. (2020). Are mixed meat and vegetable protein products good alternatives for reducing meat consumption? A case study with burgers. Current Research in Food Science, 3, 30–40. https://doi.org/10.1016/j.crfs.2020.02.003

UNICEF. (2019). The state of food security and nutrition in the world 2019: Safeguarding against economic slowdowns and downturns. Available online: https://www.unicef.org/reports/state-of-food-security-and-nutrition-2019 (accessed on 4 June 2024).

Verplanken, B., Roy, D., & Whitmarsh, L. (2018). Cracks in the wall: Habit discontinuities as vehicles for behaviour change. In: Verplanken, B. (editor). The psychology of habit: Theory, mechanisms, change, and contexts. pp. 189–205.

Wang, O., & Scrimgeour, F. (2021). Willingness to adopt a more plant-based diet in China and New Zealand: Applying the theories of planned behaviour, meat attachment and food choice motives. Food Quality and Preference, 93, 104294. https://doi.org/10.1016/j.foodqual.2021.104294




DOI: https://doi.org/10.24294/jipd11232

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