Weight loss study: sharing data with friends boosts Long-Term results
NCT ID NCT05180448
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.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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322 people
The number who actually took part.
- Started
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Jan 2022
- Finished
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Jul 2025
- Lead sponsor
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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
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18 to 70 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Drexel University
Philadelphia, Pennsylvania, 19104, United States
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