Weight loss with a buddy: new study tests power of social ties
NCT ID NCT06335810
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is testing whether inviting friends, family, or coworkers to join a weight-loss program helps Black or Hispanic adults with obesity lose more weight. The program focuses on improving communication and problem-solving around eating and activity. Researchers will see if participants attend coaching sessions and if their social network members get involved.
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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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About 264 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2024
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- 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 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Index Participant: 1. Black race or Hispanic ethnicity 2. Male or Female 18 years of age or older 3. Calculated BMI \> 30kg/m2 from objectively measured height and weight by study staff 4. Access \& willingness to use program food intake app via home computer or a smartphone 5. Ability to identify at least one adult social network member who will participate in the study * Social Network Member: 1. Male or Female 18 years of age or older 2. Access to the internet or a smartphone Exclusion Criteria: * Index Participant: 1. Active enrollment in a weight-loss program, use of weight-loss medications, or planning weight-loss surgery 2. Advanced medical illness, dementia, hospitalization, injury, or pregnancy that inhibits regular physical activity 3. Contraindications to exercise based on the Physical Activity Readiness Questionnaire or lack of clearance from a health care provider 4. Unresolved Food insecurity 5. Speaks a language other than English or Spanish * Social Network Member: 1. Speaks a language other than English or Spanish
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Weill Cornell Medicine
RECRUITINGNew York, New York, 10065, United States
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