Cited by 19Eating Disorders and BehaviorsDigital Mental Health InterventionsNutrition, Health and Food Behavior

Private Yet Social: How LLM Chatbots Support and Challenge Eating Disorder Recovery

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Choi, Ryuhaerang, Kim, Taehan, Park, Subin, Kim, Jennifer G., Lee, Sung-Ju·2025·Proceedings of the 2025 CHI Conference on Human Factors in Computing Systems

Abstract

Eating disorders (ED) are complex mental health conditions that require long-term management and support. Recent advancements in large language model (LLM)-based chatbots offer the potential to assist individuals in receiving immediate support. Yet, concerns remain about their reliability and safety in sensitive contexts such as ED. We explore the opportunities and potential harms of using LLM-based chatbots for ED recovery. We observe the interactions between 26 participants with ED and an LLM-based chatbot, WellnessBot, designed to support ED recovery, over 10 days. We discovered that our participants have felt empowered in recovery by discussing ED-related stories with the chatbot, which served as a personal yet social avenue. However, we also identified harmful chatbot responses, especially concerning individuals with ED, that went unnoticed partly due to participants' unquestioning trust in the chatbot's reliability. Based on these findings, we provide design implications for safe and effective LLM-based interventions in ED management.

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  • Choi et al. analyzed patient-chatbot conversations and found the risk of harmful responses on eating disorders.

    “Denecke et al. analyzed various cases of harmful LLM-CB use, including a case of an LLM-CB promoting harmful eating disorder behavior among teenagers83, and Choi et al. analyzed patient-chatbot conversations and found the risk of harmful responses on eating disorders84.”
  • The search string was validated using three pre-selected target articles.

    “The search string was validated using three pre-selected target articles47,84,110.”

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Research works printed but not linked: 5

  1. Munmun De Choudhury, Michael Gamon, Scott Counts, and Eric Horvitz. 2013. Predicting depression via social media. In Proceedings of the international AAAI conference on web and social media , Vol. 7. 128–137.
  2. Zilin Ma, Yiyang Mei, and Zhaoyuan Su. 2023. Understanding the benefits and challenges of using large language model-based conversational agents for mental well-being support. In AMIA Annual Symposium Proceedings , Vol. 2023. American Medical Informatics Association, 1105.
  3. Telegram FZ LLC and Telegram Messenger Inc.[n. d.]. Telegram. https://telegram.org
  4. A Vaswani. 2017. Attention is all you need. Advances in Neural Information Processing Systems (2017).
  5. Yuxin Zhao Jiawei Wu Ping Qu Beibei Zhang and Hao Yan. 2024. Assessing User Trust in LLM-based Mental Health Applications: Perceptions of Reliability and Effectiveness. Journal of Computer Technology and Applied Mathematics 1 2 (2024) 19–26.

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Authors
Choi, R., Kim, T., Park, S., Kim, J. G., & Lee, S.-J.
Affiliations
  • Korea Advanced Institute of Science and Technology (KR)
  • Georgia Institute of Technology (US)
Venue
Proceedings of the 2025 CHI Conference on Human Factors in Computing Systems
Publisher
ACM
Published
2025-04-25
Pages
1-19
OpenAlex
W4409749025
Cited by
19
References
98
Citations by year
2026: 15 · 2025: 4
FWCI
225.87
Type
conference paper
Language
en
Open access
Locations
  • CHI Conference on Human Factors in Computing Systems (publishedVersion, cc-by)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Funders
National Research Foundation of Korea (RS-2024-00464269, RS-2024-00337007)
Topics
  • Social Sciences › Psychology › Clinical Psychology › Eating Disorders and Behaviors
  • Social Sciences › Psychology › Applied Psychology › Digital Mental Health Interventions
  • Health Sciences › Nursing › Nutrition and Dietetics › Nutrition, Health and Food Behavior
Keywords
large language models, chatbots, eating disorders, eating disorder recovery, digital mental health support, social support

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