NutriTrack: AI-Assisted Nutritional Tracking in the Obesity Clinic (NUTRITRACK)

May 6, 2026 updated by: Francisco José García González

NutriTrack: An Artificial Intelligence Application for Nutritional and Behavioral Tracking in Patients With Obesity in an Outpatient Obesity Clinic: A Prospective Observational Pilot Study

NutriTrack is a digital health application designed to support nutritional and behavioral tracking in patients with obesity followed in an outpatient obesity clinic. The application allows patients to record food intake using food photographs, barcode scanning, or manual search, and to register behavioral variables related to eating episodes.

This prospective, single-center, observational pilot study will evaluate the feasibility and usability of NutriTrack in 20 to 50 adult patients with obesity or overweight with comorbidities followed at the Obesity Clinic of Hospital Clínico San Carlos. Participants will use the application for 4 weeks as a complementary tool. The information generated by NutriTrack will be available to healthcare professionals as supportive information and will not replace clinical judgment or modify usual care decisions.

The main outcome is usability measured using the System Usability Scale. Secondary and exploratory outcomes include agreement between artificial intelligence-based nutritional estimates and standard dietitian assessment, adherence to daily food logging, professional perceived clinical utility, changes in eating behavior and emotional regulation scales, and technical feasibility of data export.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Detailed Description

NutriTrack is a digital health application developed within Hospital Clínico San Carlos and Universidad Complutense de Madrid to support nutritional and behavioral tracking in patients with obesity. The application integrates artificial intelligence-based food image recognition, the Spanish BEDCA nutritional database, and a rule-based engine for the detection of clinically relevant eating patterns.

This is a prospective, single-center, observational pilot study with complementary clinical use. The application will be used by adult patients followed at the Obesity Clinic for 4 weeks. Participants will record daily food intake and behavioral variables related to eating episodes, including hunger, satiety, emotional state, eating context, eating speed, perceived control, and cravings.

Healthcare professionals may review the NutriTrack clinical panel as supportive information. The application output will not replace clinical judgment, will not trigger automated clinical decisions, will not modify usual care, and will not be integrated into the hospital electronic health record during the pilot phase.

The study will assess usability, nutritional estimation accuracy, adherence to food logging, professional perceived clinical utility, exploratory changes in emotional regulation and eating behavior, and technical feasibility of data export. The study is intended to generate preliminary evidence to support future larger-scale validation.

Study Type

Observational

Enrollment (Estimated)

50

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Adult patients with obesity or overweight with comorbidities who are in active follow-up at the Obesity Clinic of Hospital Clínico San Carlos and who have regular access to and use of a smartphone with iOS or Android operating system.

Description

Inclusion Criteria:

  • Age 18 years or older.
  • Diagnosis of obesity, defined as body mass index 30 kg/m2 or higher, or overweight with comorbidities, defined as body mass index 27 kg/m2 or higher.
  • Active follow-up at the Obesity Clinic of Hospital Clínico San Carlos.
  • Regular possession and use of a smartphone with iOS or Android operating system.
  • Ability to read and understand Spanish.
  • Signed informed consent.

Exclusion Criteria:

  • Active diagnosed eating disorder, including anorexia nervosa, bulimia nervosa, or binge eating disorder.
  • Cognitive impairment preventing autonomous use of the application.
  • Simultaneous participation in another nutritional intervention study.
  • Inability or refusal to use mobile technology.
  • Current pregnancy or breastfeeding.
  • Acute medical condition requiring hospitalization during the study period.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
NutriTrack Observational Cohort
Adult patients with obesity or overweight with comorbidities followed at the Obesity Clinic of Hospital Clínico San Carlos who will use the NutriTrack application for 4 weeks as a complementary nutritional and behavioral tracking tool.
Other: NutriTrack digital health application
NutriTrack is a digital health application used for nutritional and behavioral tracking. Patients record food intake using food photographs, barcode scanning, or manual search, and report behavioral variables such as hunger, satiety, emotional state, eating context, eating speed, perceived control, and cravings. The application output is informational, requires healthcare professional supervision, and does not replace clinical judgment or modify usual care.
Other Names:
  • NutriTrack

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
System Usability Scale score
Time Frame: Week 4
Usability of the NutriTrack application measured using the System Usability Scale. The score ranges from 0 to 100, with higher scores indicating better usability. A score of 70 or higher will be considered acceptable.
Week 4

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Correlation between AI-based caloric estimation and dietitian assessment
Time Frame: Week 4
Correlation between caloric estimation obtained using NutriTrack artificial intelligence-based food image recognition and standard dietitian-nutritionist assessment.
Week 4
Adherence to daily food logging
Time Frame: From baseline to Week 4
Percentage of days with complete food intake records during the 4-week follow-up period.
From baseline to Week 4
Healthcare professional perceived clinical utility score
Time Frame: Week 4
Perceived clinical utility of NutriTrack assessed by the healthcare professional using an ad hoc questionnaire.
Week 4

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in Difficulties in Emotion Regulation Scale score
Time Frame: Baseline to Week 4
Change in emotional regulation from baseline to Week 4 measured using the Difficulties in Emotion Regulation Scale. Higher scores indicate greater difficulties in emotion regulation.
Baseline to Week 4
Change in Eating Disorder Examination Questionnaire score
Time Frame: Baseline to Week 4
Change in eating behavior from baseline to Week 4 measured using the Eating Disorder Examination Questionnaire. Higher scores indicate greater severity of eating disorder-related psychopathology.
Baseline to Week 4
Digital competence score
Time Frame: Baseline
Baseline digital competence assessed using the DigComp-ES questionnaire. The score will be explored as a potential factor associated with usability of the NutriTrack application.
Baseline
Frequency and type of rule-based eating risk patterns detected by NutriTrack
Time Frame: From baseline to Week 4
Frequency and type of eating risk patterns detected by the NutriTrack rule-based engine during the 4-week follow-up period. Patterns may include emotional eating, rapid eating, night eating, repeated meal omission, and possible binge-eating episodes. These alerts are informational and visible only to healthcare professionals.
From baseline to Week 4
Technical feasibility of HL7 FHIR R4 data export
Time Frame: Week 4
Qualitative assessment of the technical feasibility of exporting NutriTrack study data using the HL7 FHIR R4 format for research data archiving. The export will not be used for clinical integration with the hospital electronic health record during the pilot study.
Week 4

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Francisco José García González

Collaborators

Hospital San Carlos, Madrid

Investigators

  • Principal Investigator: Francisco José García González, PhD, RN, Hospital Clínico San Carlos / Universidad Complutense de Madrid

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

  • Ministerio de Sanidad. Base de Datos Española de Composición de Alimentos (BEDCA). 2023.
  • Gratz KL, Roemer L. Multidimensional assessment of emotion regulation and dysregulation. Journal of Psychopathology and Behavioral Assessment. 2004;26(1):41-54.
  • Fairburn CG, Beglin SJ. Eating Disorder Examination Questionnaire (EDE-Q 6.0). Guilford Press; 2008.
  • Brooke J. SUS: A quick and dirty usability scale. Usability Evaluation In Industry. 1996;189(194):4-7.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

June 15, 2026

Primary Completion (Estimated)

July 15, 2026

Study Completion (Estimated)

September 30, 2026

Study Registration Dates

First Submitted

May 6, 2026

First Submitted That Met QC Criteria

May 6, 2026

First Posted (Actual)

May 15, 2026

Study Record Updates

Last Update Posted (Actual)

May 15, 2026

Last Update Submitted That Met QC Criteria

May 6, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • NUTRITRACK-CEI-HCSC-2026-001

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Obesity & Overweight

Clinical Trials on NutriTrack digital health application

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Sweden

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe