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Consumer objective and subjective knowledge about healthy foods: An approach to promote healthy lifestyle choices in South Africa

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Listed:
  • Daleen van der Merwe
  • Hanli de Beer
  • Susanna Ellis
  • Petra Bester
  • Frederick Marais
  • Adri Steyn

Abstract

Unhealthy food choices and consumption, coupled with sedentary lifestyles among consumers, intensify public health concerns regarding the quadruple disease burden, despite Primary Health Care (PHC) policy. However, the current relationship between consumer knowledge about healthy foods and following a healthy lifestyle needs to be explored. Our study, therefore, aimed to determine the association between consumers’ subjective and objective knowledge about healthy foods and various healthy lifestyle choices. A cross-sectional survey was conducted among employed consumers (N = 157) from South African corporate settings. We used structural equation modelling (SEM) to determine associations between subjective and objective knowledge about healthy foods and healthy lifestyle choices. Our findings showed that most participants scored high on making healthy lifestyle choices relating to avoiding smoking (69.5%) and limiting drinking alcohol (68.7%) but less so for food and sleep (44.4%) while neglecting exercise, relaxation (13.7%), and choices that require dedicated effort (25.2%). On average, participants had high levels of subjective (mean = 3.59; 5-point Likert scale) knowledge and objective knowledge about healthy foods (88.4−95.9% correct responses). However, their objective knowledge about weight and cholesterol had severe deficiencies (36.7%). SEM confirmed an association between subjective knowledge and most healthy lifestyle choice categories, while income contributed to dedicated effort lifestyle choices. By contrast, objective knowledge did not associate with such choices. Our structural model suggests that subjective knowledge about healthy foods contributes to healthy lifestyle choices. Therefore, subjective knowledge and the objective knowledge deficiencies we identified among corporate consumers can serve as a valuable starting point for informed education to promote PHC policy and healthy lifestyle choices.

Suggested Citation

  • Daleen van der Merwe & Hanli de Beer & Susanna Ellis & Petra Bester & Frederick Marais & Adri Steyn, 2024. "Consumer objective and subjective knowledge about healthy foods: An approach to promote healthy lifestyle choices in South Africa," PLOS ONE, Public Library of Science, vol. 19(1), pages 1-23, January.
    • Handle: RePEc:plo:pone00:0296504
    DOI: 10.1371/journal.pone.0296504
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    References listed on IDEAS

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    1. Alba, Joseph W & Hutchinson, J Wesley, 2000. "Knowledge Calibration: What Consumers Know and What They Think They Know," Journal of Consumer Research, Journal of Consumer Research Inc., vol. 27(2), pages 123-156, September.
    2. Park, C Whan & Mothersbaugh, David L & Feick, Lawrence, 1994. "Consumer Knowledge Assessment," Journal of Consumer Research, Journal of Consumer Research Inc., vol. 21(1), pages 71-82, June.
    3. House, Lisa & Lusk, Jayson L. & Jaeger, Sara & Traill, W. Bruce & Moore, Melissa & Valli, Carlotta & Morrow, Bert & Yee, Wallace M.S., 2004. "Objective And Subjective Knowledge: Impacts On Consumer Demand For Genetically Modified Foods In The United States And The European Union," 2004 Annual meeting, August 1-4, Denver, CO 20125, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
    4. Manika, Danae & Dickert, Stephan & Golden, Linda L., 2021. "Check (it) yourself before you wreck yourself: The benefits of online health information exposure on risk perception and intentions to protect oneself," Technological Forecasting and Social Change, Elsevier, vol. 173(C).
    5. Sarah Kelly & Steven Martin & Isla Kuhn & Andy Cowan & Carol Brayne & Louise Lafortune, 2016. "Barriers and Facilitators to the Uptake and Maintenance of Healthy Behaviours by People at Mid-Life: A Rapid Systematic Review," PLOS ONE, Public Library of Science, vol. 11(1), pages 1-26, January.
    6. Andrews, J. Craig & Netemeyer, Richard & Burton, Scot & Kees, Jeremy, 2021. "What consumers actually know: The role of objective nutrition knowledge in processing stop sign and traffic light front-of-pack nutrition labels," Journal of Business Research, Elsevier, vol. 128(C), pages 140-155.
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