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Eating Disorder Chatbot Optimization

Optimizing an Automated Chatbot to Achieve Efficient, Scalable Treatment for Eating Disorders

Who can join

Ages 18 and older · All sexes

Inclusion Criteria:

* 18+ years old
* Owns a smartphone
* Speaks English
* US resident
* Screens for a clinical or subclinical eating disorder
* Low suicidality
* Not currently in treatment for an eating disorder
* Does not have a medical condition or take medications that impact appetite/weight
* Not currently pregnant

Exclusion Criteria:

* Below 18 years of age
* Does not own a smartphone
* Does not speak English
* Lives outside the US
* Screens as: at risk for an eating disorder, anorexia nervosa, atypical anorexia nervosa, avoidant/restrictive food intake disorder, or not at risk for an ED
* High suicidality
* In treatment for an eating disorder
* Has a medical condition or takes medication(s) that impact appetite/weight
* Currently pregnant

About the study

The purpose of this study is to optimize an automated digital chatbot intervention for adults with clinical or subclinical eating disorders.

What is being tested

• Digital Chatbot Program (behavioral)

Sponsor: Washington University School of Medicine · Participants: 800 · Started: Jul 17, 2026

Contact the study team

• Marianna B. Horton, B.S./B.A. · Phone: 3149355843
• Nathalie A. Gullo, B.S./B.A. · Phone: 6469195177

Official record on ClinicalTrials.gov — NCT07218302

Locations in the U.S.

Conditions

• Eating Disorders

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.