Does Weight Loss Surgery and Probiotic Supplementation Lead to a "Lean" Gut Microbiota?
Public ClinicalTrials.gov record NCT01870544. 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.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of the weight-loss study is to characterize the effect of LGG supplementation on the relative abundance of phyla in the gut microbiota of patients undergoing gastric bypass and sleeve gastrectomy surgery, and to elucidate a relationship between the gut microbiota pattern and the degree of weight-loss post-surgery. The investigators hypothesize that LGG administration will result in a "leaner" pattern of gut microbiota that will lead to higher weight loss at 3 months post-surgery.
Study identification
- NCT ID
- NCT01870544
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 1, Phase 2
- Enrollment
- 18 participants
Conditions and interventions
Conditions
Interventions
- Lactobacillus Rhamnosus GG Dietary Supplement
- Placebo Dietary Supplement
Dietary Supplement
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Aug 31, 2013
- Primary completion
- Dec 31, 2015
- Completion
- Dec 31, 2015
- Last update posted
- Feb 9, 2016
2013 – 2016
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Tufts Medical Center Weight and Wellness Center | Boston | Massachusetts | 02111 | — |
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 NCT01870544, 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 Feb 9, 2016 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01870544 live on ClinicalTrials.gov.