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Is tracking your food purchases good for your health?
A growing number of consumers are using smartphone apps such as Yuka to scan barcodes and instantly assess how healthy their food and cosmetics purchases are, part of a wider "food tracking" trend that started in France. The apps use traffic-light-style scoring to flag high sugar, saturated fat or additive content, encouraging shoppers to switch to alternatives, though this can push people towards pricier organic products and, as one French mother described, make everyday shopping more stressful for both parent and child.
Yuka, founded in France in 2015, now has 85 million users across 12 countries, drawing on a database of six million products that grows by around 1,200 entries a day. The US has by far the most users (28 million), ahead of France (six million) and the UK (around five million), and the app counts high-profile fans such as US health secretary Robert F Kennedy Jr. The trend also encompasses the crowdsourced Open Food Facts database, launched in 2012, and France's official Nutri-Score labelling system, introduced shortly after Yuka and inspired partly by the UK's existing traffic-light labelling.
In short
- Apps like Yuka score food/cosmetics products for health using barcode scans.
- Yuka has 85 million users worldwide, most in the US.
- Part of wider French-led "food tracking" movement including Nutri-Score labelling.
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The case for
Food tracking apps provide transparent, evidence-based nutritional information that empowers consumers to identify unhealthy foods and make better purchasing decisions aligned with scientific dietary guidance. By democratising expert nutritional assessment, these tools can meaningfully improve public health outcomes by helping people reduce consumption of excess sugar, saturated fat, and harmful additives.
The case against
Whilst these apps provide useful information, they risk generating unhealthy psychological relationships with food by inducing stress and anxiety around everyday shopping, particularly for families. Additionally, by steering consumers towards pricier products and relying on oversimplified scoring systems that may overlook nutritional complexity, they create both economic barriers to healthy eating and potential harms from the obsessive monitoring they encourage.
Explained simply
Food tracking apps are smartphone tools that help consumers check the nutritional quality of products before purchase. Users scan product barcodes and receive colour-coded scores—typically using traffic-light colours—that flag concerns such as high sugar, saturated fat or additives. The scores encourage shoppers to compare products and potentially choose healthier alternatives.
Yuka, founded in France in 2015, is the largest such app with 85 million users across 12 countries, drawing on a database of six million products that grows by around 1,200 items daily. The United States accounts for most users (28 million), followed by France and the United Kingdom, and the app counts prominent advocates such as US health secretary Robert F Kennedy Jr. The broader movement also includes the Open Food Facts crowdsourced database and France's official Nutri-Score labelling system.
The appeal of these apps lies in providing instant nutritional information at the point of purchase. However, their impact is debated. Some users report switching to pricier organic products or experiencing stress from constant assessment, raising questions about whether the systems genuinely improve health outcomes or simply alter shopping behaviour.
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