The ongoing obesity epidemic is an indicator that traditional efforts towards diet change are insufficient, and interventions focusing mainly on restrictions of unhealthy food are of limited success. Therefore, approaches targeting food preferences should be integral in counteracting the current epidemic. However, food preferences are affected by a multitude of factors and are usually resistant to changes later in life. Hence, we tested whether the food choices of preschool children can be changed by a child-appropriate interactive fairytale. We used two interactive stories: the first (experimental) story was about how two protagonists of similar age as the participants saved their hometown from being drained of color with the help of magic fruits or vegetables, while the second (control) story consisted of a similar plot that did not mention food. In Experiment 1, we used a crossover design with a one-week baseline measurement. After the experimental stories, healthy food choices (i.e., pieces of fruit vs. cookies, sweets, or cake) increased significantly relative to the one-week baseline, whereas no change was observed after the control story. In preregistered Experiment 2, we replicated these results with vegetables as healthy options using a random control design and investigated the longevity of the effects. The food-story effect on vegetable choices was similar to fruits (Exp. 1) and lasted for two weeks. These findings demonstrate that appropriate narratives about food can have a strong and lasting effect on the healthy food choices of preschool children and might promote healthy food consumption if incorporated into nutrition education.

The authors have declared no competing interest.

This work was supported by the Humboldt University of Berlin and the East African German Transdisciplinary Network [EAGER-trans] (https://hu-berlin.de/eager-trans-net).

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The study procedures are in accordance with the Helsinki Declaration and were approved by the ethics committee of the Humboldt University of Berlin

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