Using a human-centered design framework and behavioral economic interventions to increase fruit and vegetable purchases in an online grocery store: Study design and methodologies

Top Things to Know

Using loss-framed messages and strategic product placement can significantly increase the effectiveness of FIM programs by encouraging healthier food choices in digital environments.

Partnering with online grocery services like Instacart allows FIM programs to reach broader populations, especially those with mobility or access challenges, while enabling precise tracking of food purchases.

Incorporating user feedback into the design of FIM interventions, such as simplifying enrollment and communication, can boost participation and ensure that programs are both accessible and effective.

Summary of Conclusion/Findings

This study tested how behavioral economic strategies, specifically loss-framed text messages and choice architecture, can increase fruit and vegetable purchases in an online grocery setting among adults with obesity and type 2 diabetes. Participants were randomized into five groups, receiving different combinations of a monthly produce subsidy, text reminders, and a redesigned storefront that prioritized healthy items. The primary outcome was the total amount spent on fruits and vegetables over three months. A pre-pilot phase helped refine the intervention, improving participant engagement and usability. While final results are pending, the study demonstrates the feasibility of using digital platforms like Instacart to deliver Food is Medicine (FIM) interventions and highlights the potential of behavioral nudges to improve dietary behaviors. The approach also underscores the importance of tailoring interventions to user needs through human-centered design.