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Objectives <p>To examine (1) the alignment of an on-shelf nutrition labelling system with classifications of food processing; and (2) the impact of the system on food sales by type of food processing.</p> Methods <p>Transaction data from three supermarket banners of a major Canadian supermarket chain were examined before and after the Guiding Stars® system, an on-shelf nutrition labelling system, was implemented in control and intervention supermarkets (n≈1.88 billion products sold). Descriptive analyses examined alignment between Guiding Stars® and the NOVA categorization for type of food processing for 61,456 food and beverage products available for purchase, and percentage of products sold by type of processing. Changes in selling 100 units of products across processing type overall and within 11 food categories were evaluated.</p> Results <p>The Guiding Stars® and NOVA systems were moderately consistent in categorizing products by healthiness. The majority of products sold (53.7%) were ultra-processed foods (UPF). Small but significant positive shifts were observed in the intervention sites with increased purchases of un/minimally processed products in three categories and processed products in three categories relative to the change in UPF. Negative shifts were observed with increased purchases of UPF relative to changes in un/minimally processed products in one category and processed products in two categories.</p> Conclusions <p>On-shelf nutrition labelling systems may affect small shifts in food sales with an overall shift away from UPF, but with differential impact across food categories. Incorporating food processing into nutrient profiling systems for on-shelf labelling may result in greater reductions in UPF purchasing.</p>

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A controlled before-after quasi-experimental study examining the impacts of a supermarket on-shelf nutrition labelling intervention on food sales by type of food processing

  • 期刊论文

  • 发表日期：

    2025年10月16日

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  • Lana Vanderlee,
  • Sudipta Saha,
  • Kamelia Faraj,
  • Jean-Claude Moubarac,
  • Sarah Orr,
  • Ashini Weerasinghe,
  • Ye Li,
  • Erin Hobin

摘要

Objectives

To examine (1) the alignment of an on-shelf nutrition labelling system with classifications of food processing; and (2) the impact of the system on food sales by type of food processing.

Methods

Transaction data from three supermarket banners of a major Canadian supermarket chain were examined before and after the Guiding Stars® system, an on-shelf nutrition labelling system, was implemented in control and intervention supermarkets (n≈1.88 billion products sold). Descriptive analyses examined alignment between Guiding Stars® and the NOVA categorization for type of food processing for 61,456 food and beverage products available for purchase, and percentage of products sold by type of processing. Changes in selling 100 units of products across processing type overall and within 11 food categories were evaluated.

Results

The Guiding Stars® and NOVA systems were moderately consistent in categorizing products by healthiness. The majority of products sold (53.7%) were ultra-processed foods (UPF). Small but significant positive shifts were observed in the intervention sites with increased purchases of un/minimally processed products in three categories and processed products in three categories relative to the change in UPF. Negative shifts were observed with increased purchases of UPF relative to changes in un/minimally processed products in one category and processed products in two categories.

Conclusions

On-shelf nutrition labelling systems may affect small shifts in food sales with an overall shift away from UPF, but with differential impact across food categories. Incorporating food processing into nutrient profiling systems for on-shelf labelling may result in greater reductions in UPF purchasing.