Adherence
Health-related claims on food labels significantly increase the likelihood of purchasing and consuming the labeled product compared to identical products without such claims.
If you see a health or nutrition claim on a packaged food, expect that it will make you more likely to buy and eat it than if the package were blank. This is a powerful marketing tool that works in both lab settings and real-world sales data. Use this knowledge to be aware of your own biases when shopping.
The meta-analyses of 17 studies found that health-related claims increase consumption and/or purchasing (OR 1.75, CI 1.60–1.91).
Why this rating
Based on a systematic review and meta-analysis of 17 controlled experiments, though the authors note the findings are mostly from artificial settings.
Source
A systematic review, and meta-analyses, of the impact of health-related claims on dietary choices
Asha Kaur et al. · International Journal of Behavioral Nutrition and Physical Activity · 2017
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →