Weight loss study: sharing data with friends boosts Long-Term results

NCT ID NCT05180448

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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 Results may not be published yet.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

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Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at whether sharing digital self-monitoring data—like weight, steps, and calories—with a friend or family member helps adults with overweight or obesity lose more weight over 24 months. About 320 participants used a wireless scale and Fitbit to track their progress. The goal was to see if extra accountability and support from others improves long-term weight loss.

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

322 people

The number who actually took part.

Started

Jan 2022

Finished

Jul 2025

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 70 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Individuals must be of overweight or obese BMI (27-50 kg/m2) * Individuals must be adults (aged 18-70) * Able to engage in physical activity (defined as walking two city blocks without stopping) * Access and willingness to use a smartphone and internet * Has one adult friend or family member who indicates willingness to serve in a support role * Satisfactory completion of all enrollment procedures * English Speaking Exclusion Criteria: * Medical or psychiatric condition (e.g., cancer, type I diabetes, psychosis, full-threshold eating disorder) that may pose a risk to the participant during intervention or cause a change in weight, or limit ability to comply with the program or participate appropriately in group-based treatment * Currently pregnant or breastfeeding, or planning to become pregnant in the next 24 months * Use of insulin or a medication that can cause significant change in weight * History of bariatric surgery * Weight loss of greater than or equal to 5% in the previous 3 months * Weight loss of greater than or equal to 10% in the past 3 years that is currently being maintained

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder Overweight Weight Loss

As listed by the trial registrant

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

Contacts and locations

Locations

  • Drexel University

    Philadelphia, Pennsylvania, 19104, United States

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Other studies related to the condition(s) this trial covers.