# Urban South African Adolescents’ Perspectives on Healthy and Unhealthy Foods and the Drivers of Their Food Choices in Their School Food Environment: A Pilot Study

**Authors:** Alice Scaria Khan, Francesca Dillman-Carpentier, Elizabeth Catherina Swart

PMC · DOI: 10.3390/ijerph23020208 · International Journal of Environmental Research and Public Health · 2026-02-07

## TL;DR

This study explores how urban South African adolescents perceive healthy and unhealthy foods and what influences their food choices in school.

## Contribution

The study provides new insights into adolescent food preferences and the role of the school food environment in shaping dietary behaviors in South Africa.

## Key findings

- Unhealthy ultra-processed foods are prevalent in schools, while healthy options are scarce.
- Taste, affordability, and social status influence adolescents' food choices more than nutrition knowledge.
- Banning unhealthy foods and subsidizing healthy ones is suggested to improve adolescent diets.

## Abstract

Background: Childhood obesity is on the rise in South Africa and adolescents spend a substantial amount of time in the school food environment (SFE), which plays a role in shaping their food choices and provides a critical setting to improve diets. Objective: To investigate South African adolescent school-going learners’ knowledge and understanding of healthy and unhealthy foods and the drivers of their food choices in their (SFE). Design: Qualitative participatory research methods including workshops, photovoice and focus group discussions (FGDs). Setting: Two urban public high schools, one non-metropolitan and one metropolitan, in two separate provinces (Eastern Cape and Gauteng) in South Africa. Participants: Adolescents 14–18 years (n = 42). Results: Unhealthy ultra-processed foods (UPFs) were found to be rampant in the SFE, and healthy foods were scarce, limiting learners’ choices. Taste preference was a major driver of adolescent food choices as were satiety, value for money, affordability, convenience, visual appeal and seeming “cool or “rich” by purchasing branded franchise fast foods. Learners had some general nutrition knowledge, but this did not translate into healthy food choices. Banning unhealthy foods in the SFE and providing affordable and satiating healthy foods were proposed as solutions. Conclusions: UPFs such as packaged foods and fast food were considered tasty but unhealthy, yet were preferred. Interventions are needed to promote healthy diets by changing the SFE, and eventually adolescent food choices. This will require government regulation banning the sale of unhealthy food and beverages (F&Bs) in the SFE and subsidising healthy satiating foods to change dietary behaviour.

## Full-text entities

- **Diseases:** depression (MESH:D003866), obese (MESH:D009765), eating disorders (MESH:D001068), Overweight (MESH:D050177), injury to (MESH:D014947), malnutrition (MESH:D044342), micronutrient deficiencies (MESH:D007153), cardiovascular diseases (MESH:D002318), weight stigma (MESH:D015431), anxiety (MESH:D001007)
- **Chemicals:** iron (MESH:D007501), granola bar (-), salt (MESH:D012492), sugar (MESH:D000073893), starch (MESH:D013213)
- **Species:** Solanum tuberosum (potatoes, species) [taxon 4113], Oryza sativa (Asian cultivated rice, species) [taxon 4530], Gallus gallus (bantam, species) [taxon 9031], Malus domestica (apple, species) [taxon 3750], Canis lupus familiaris (dog, subspecies) [taxon 9615], Homo sapiens (human, species) [taxon 9606]

## Full text

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## Figures

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## References

56 references — full list in the complete paper: https://tomesphere.com/paper/PMC12940879/full.md

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Source: https://tomesphere.com/paper/PMC12940879