Abstract
Healthy eating apps have gained popularity as tools for promoting dietary improvements and supporting behavior change. Despite their potential, maintaining user engagement and achieving sustained behavior change remain significant challenges. This paper investigates how principles of Human-Computer Interaction (HCI) can be leveraged to address these challenges and enhance the effectiveness of healthy eating apps. By conducting a comprehensive review of relevant HCI methodologies and analyzing the functionalities of existing apps, the paper identifies key factors that influence user interaction and behavioral outcomes. The research highlights that incorporating HCI principles-such as personalized feedback, gamification, and social interaction-can lead to more engaging and effective apps. Personalized feedback helps users feel more understood and supported, while gamification elements increase motivation through rewards and challenges. Social interaction features foster community support and accountability, contributing to sustained engagement. The paper concludes with practical recommendations for app developers to integrate these HCI principles and outlines future research directions to further explore and refine strategies for enhancing user engagement and behavior change in healthy eating apps.
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