Web-based Weight Loss Intervention
Public ClinicalTrials.gov record NCT03400696. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Study identification
- NCT ID
- NCT03400696
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Lead sponsor
- 23andMe, Inc.
- Industry
- Enrollment
- 63,656 participants
Conditions and interventions
Conditions
Interventions
- Higher fiber diet Behavioral
- Lower carbohydrate diet Behavioral
- Physical activity focused Behavioral
Behavioral
Eligibility (public fields only)
- Age range
- 18 Years to 70 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Dec 26, 2017
- Primary completion
- Jan 7, 2019
- Completion
- Apr 15, 2019
- Last update posted
- Jun 3, 2020
2017 – 2019
United States locations
- U.S. sites
- 2
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| 23andMe | Mountain View | California | 94041 | — |
| 23andMe | Mountain View | California | 94043 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03400696, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jun 3, 2020 · Synced Apr 22, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03400696 live on ClinicalTrials.gov.