The research team employed a qualitative multi-method design that integrated document review, structured observation of outdoor and point-of-sale advertising, radio monitoring, digital content analysis, and spatial mapping. Data were collected between August 2025 and January 2026 in five cities: Lagos, Abuja, Port Harcourt, Kampala, and Entebbe. The study comprised 82 purposively selected policy, academic, and corporate documents; 312 outdoor and point-of-sale advertisements; 96 hours of radio broadcasting containing 148 advertisements; 420 digital promotional artifacts from Instagram and Facebook; and spatial mapping of 214 fast-food outlets. In total, 1,164 units were thematically coded using an Information Environment Assessment framework across four interconnected domains: People and Community, Information Sources, Actors, and Policy, Process, and Enablers.

The multimethod approach enabled triangulation of findings across documentary, media, digital, and spatial sources, allowing the researchers to examine the food-related information environment as an interconnected system rather than as isolated communication channels. Guided by critical anthropology and the Commercial Determinants of Health framework, the analysis positions commercial framing as a mechanism through which meaning, visibility, and policy discourse are structured across the entire landscape of information that citizens encounter daily.

What emerges from the data is a recurring pattern of commercial framing that operates through aspirational urban identity, moderation rhetoric, billboard saturation, sports sponsorship, influencer promotion, health-halo packaging, corporate social responsibility campaigns, and economic narratives in policy discourse. Each of these techniques works in concert with the others. A billboard in Lagos does not simply advertise a product; it sells a vision of modernity. A radio jingle in Kampala does not merely promote a snack; it normalizes its consumption as part of everyday urban rhythm. An influencer post on Instagram does not just showcase a meal; it embeds that product within the performance of a desirable lifestyle.

The concept of health-halo packaging deserves particular attention from a technical standpoint. This technique involves the strategic use of packaging claims—such as natural, fortified, or low-fat—that create an impression of nutritional virtue even when the underlying product remains ultra-processed. The researchers found that such claims function as cognitive shortcuts, allowing consumers to resolve ambiguity about a product’s healthfulness in favor of the commercial actor’s preferred interpretation. When combined with moderation rhetoric, which encourages consumers to enjoy products responsibly, these framing devices shift the locus of responsibility from the manufacturer to the individual, a maneuver well documented in the Commercial Determinants of Health literature as a strategy for deflecting regulatory scrutiny.

The spatial mapping of 214 fast-food outlets adds a critical geographic dimension to the analysis. By charting the physical distribution of commercial food outlets across Lagos, Abuja, Port Harcourt, Kampala, and Entebbe, the researchers demonstrated that the information environment is not confined to media channels but is inscribed into the urban landscape itself. The density and placement of outlets create ambient visibility that reinforces the commercial framing encountered on billboards, radio, and social media. A consumer walking through Port Harcourt encounters the same brand architecture in physical space that they see on their phone screen, creating a redundancy of exposure that strengthens the overall framing effect.

The study’s use of the Information Environment Assessment framework represents a methodological contribution to the field. Rather than treating advertising as a discrete phenomenon, the framework examines how commercial actors structure meaning across the four domains simultaneously. In the People and Community domain, the researchers observed how commercial messaging aligns with social identity and community aspirations. In the Information Sources domain, they documented how radio, outdoor advertising, and digital platforms function as mutually reinforcing channels. In the Actors domain, they mapped the network of corporations, media houses, influencers, and policy stakeholders involved in producing and circulating commercial framing. In the Policy, Process, and Enablers domain, they analyzed how economic narratives are deployed in policy discourse to position ultra-processed products as contributors to economic growth and employment.

The researchers argue that media manipulation, as documented in this study, constitutes a form of epistemic governance. This concept refers to the ways in which powerful actors shape what citizens know, believe, and consider plausible about a given domain of life. In the context of ultra-processed products, epistemic governance operates through the systematic saturation of the information environment with commercial framing that positions these products as normal, desirable, and compatible with health and modernity. The researchers contend that this governance is embedded in broader political-economic systems, meaning that it cannot be understood or addressed in isolation from the economic interests that sustain it.

The findings carry significant implications for public health policy in Nigeria and Uganda, where non-communicable diseases are rising alongside the expansion of ultra-processed food markets. The World Health Organization has long identified ultra-processed products as a key driver of the global non-communicable disease burden, and this study demonstrates how the commercial information environment may undermine public health efforts by shaping consumer perceptions before regulatory interventions can take effect. The researchers emphasize that examining the food-related information environment as an interconnected system, rather than as isolated communication channels, is essential for developing effective policy responses that address the full spectrum of commercial framing techniques.

The study, published open access in BMC Public Health, was conducted without external funding, and the authors declare no competing interests. As ultra-processed products continue their expansion across African markets, this research provides a technical and empirical foundation for understanding how appetite itself is being engineered—not through the products alone, but through the deliberate architecture of the information environment that surrounds them.

Subject of Research: Engineering appetite: commercial framing, ultra-processed products, and the information environment in Nigeria and Uganda

Article Title: Engineering appetite: commercial framing, ultra-processed products, and the information environment in Nigeria and Uganda

Article References: Obol, S. J., & Nzedibe, O. E. (2026). Engineering appetite: commercial framing, ultra-processed products, and the information environment in Nigeria and Uganda. BMC Public Health. https://doi.org/10.1186/s12889-026-29772-1

Image Credits: AI Generated

DOI: 10.1186/s12889-026-29772-1

Keywords: Engineering, appetite, commercial, framing, ultra-processed, products, information, environment, Nigeria, Uganda, scientific research