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AI health coach gives Real-Time weight loss tips via smartphone

NCT ID NCT07682571

Disease control Sponsor: The Fourth Affiliated Hospital of Zhejiang University School of Medicine Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 06, 2026 · Last updated Jul 07, 2026 · Updated 1 time

Summary

This study tests an artificial intelligence (AI) health coach that provides real-time, personalized weight management support through a smartphone app. Adults with overweight or obesity wear a fitness tracker and use the app to get tips on physical activity, sleep, diet, and healthy habits. The goal is to see if this approach is practical and helpful for weight control.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
AI health coach-based just-in-time adaptive intervention
What this could lead to
If successful, this could offer a scalable, low-cost digital tool to help people manage weight through personalized, real-time behavior-change support.
What could go wrong
This is a small pilot study with only 31 participants, so results may not apply to everyone. The AI coach's suggestions may not always be accurate or helpful.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

31 people

The number who actually took part.

Started

Mar 2026

Finished

May 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 60 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Aged 18 to 60 years. * Body mass index of 24 kg/m2 or higher, meeting the Chinese criteria for overweight or obesity. * Able to use a smartphone, WeChat-based platform, and wearable device during the study period. * Willing to participate in the AI health coach-based just-in-time adaptive intervention and complete study assessments. * Provided written informed consent. Exclusion Criteria: * Pregnancy, lactation, or planning pregnancy during the study period. * Severe cardiovascular, cerebrovascular, hepatic, renal, endocrine, psychiatric, or other major diseases that may affect study participation or safety. * Medical conditions or medications that may substantially affect body weight or body composition. * Contraindications to physical activity or inability to complete the intervention procedures. * Current participation in another weight-management intervention or clinical study. * Inability to understand the study procedures or complete the required assessments.

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder Overweight

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Overweight/obesity

Contacts and locations

Locations

  • 4th Affiliated Hospital, School of Medicine, Zhejiang University

    Yiwu, Zhejiang, 322000, China

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