Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Bariatric Surgery clinical trials
Every US clinical trial registered for Bariatric Surgery — phase mix, recruiting status, and the sponsors running them, straight from the NIH ClinicalTrials.gov registry.
16 US clinical trials · 6 currently recruiting
The research picture
Bariatric Surgery has 16 registered US clinical trials, 6 of them open to new participants right now — about 38% of the total.
- 6
- recruiting participants now
- 38%
- of trials open to enrollment
- 4
- in Phase 3–4 (later-stage)
- 3
- top sponsor: Brigham and Women's Hospital
Counts reflect the public ClinicalTrials.gov registry as last mirrored by PlainTrial. Status and phase are reported by each study's sponsor. This is reference information, not medical advice.
Active & Recent Trials
Simethicone as Part of ERAS in Bariatric Surgery Patients
Madigan Army Medical Center
NCT06812832
Oral Acetaminophen for Post-Op Pain Management in Bariatric Surgery Patients
Rutgers, The State University of New Jersey
NCT06658574
Lexion AP 50/30 Warmed Humidified Real Time CO2 Insufflation vs Airseal Recirculated CO2/Air Insufflation in Minimally Invasive Bariatric (Gastric Bypass) Surgery
The University of Texas Health Science Center, Houston
NCT05838300
2024 Tirzepatide-Bariatric Surgery
Marlene Starr
NCT06721507
Mechanistic and Clinical Outcomes of a Surgical Innovation Aimed at Minimizing GERD Associated With VSG (INNOVATE-VSG)
University of California, Irvine
NCT06783751
Physiologic Response to Bariatric Surgery and the Impact of Adjunct Semaglutide in Adolescents
University of Colorado, Denver
NCT06575738
Role of Dietary Habits in Efficacy of Bariatric Surgery - Study C
Brigham and Women's Hospital
NCT03482986
Role of Dietary Habits in Efficacy of Bariatric Surgery - Study B
Brigham and Women's Hospital
NCT03467906
Glucagon Dose-Response in Patients With Post-Bariatric Hypoglycemia
Joslin Diabetes Center
NCT06986603
Study on Impact of Lifestyle Change and Weight Loss Before Bariatric Surgery
Duquesne University
NCT00623792
Role of Dietary Habits in Efficacy of Bariatric Surgery - Study A
Brigham and Women's Hospital
NCT03470558
Gaining Optimism After Weight Loss Surgery (GOALS) II
Massachusetts General Hospital
NCT04868032
Bone Loss After Laparoscopic Roux-en-Y Gastric Bypass
Gundersen Lutheran Medical Foundation
NCT00975013
Bariatric Scalable Internet Treatments
Yale University
NCT03680703
Impact of Monthly High Dose Oral Cholecalciferol on Serum 25 Hydroxy Vitamin D Levels in Bariatric Surgery Subjects
Texas Tech University
NCT01871389
Effects of Gastric Bypass on Blood Levels of Duloxetine
Neuropsychiatric Research Institute, Fargo, North Dakota
NCT00989157
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 1 |
| Phase 2 | 1 |
| Phase 3 | 1 |
| Phase 4 | 3 |
Top Sponsors
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Reading the Bariatric Surgery Trial Landscape
ClinicalTrials.gov lists 16 US studies indexed under Bariatric Surgery, and 6 of those are currently open to recruitment — roughly 38% of the total volume on the registry. That ratio is a useful proxy for activity level: a high share of recruiting studies often signals that research interest is current and that new enrollment opportunities are appearing, while a low share typically means the field is dominated by completed or follow-up work where most participant spots have already been filled. These counts reflect the public registry only and include studies at every stage of design, so they should be read as an index of research attention rather than as a measure of treatment availability.
The phase distribution for Bariatric Surgery shows 4 late-stage studies (Phase 3 and Phase 4 combined) alongside 2 earlier-phase entries (Phase 1 through Phase 2). Phase 1 and Phase 2 studies focus on early safety signals, dosing, and preliminary effect, while Phase 3 studies are typically the larger efficacy and safety trials submitted toward regulatory review, and Phase 4 studies follow approved interventions in real-world use. A condition weighted toward later phases often reflects a mature research pipeline with several interventions already close to or past approval, whereas a heavier early-phase tilt suggests the field is still exploring new mechanisms and candidate approaches.
Top sponsor activity for Bariatric Surgery is led by Brigham and Women's Hospital with 3 indexed trials, alongside 9 other organizations in the top contributor list. The list on this page surfaces up to 16 of the most relevant recent and active entries, ordered with recruiting studies first so practical options are visible. All figures are derived from the public ClinicalTrials.gov dataset maintained by the National Library of Medicine and are reproduced here for reference. Inclusion of a trial, sponsor, or intervention on this page is neither an endorsement nor a recommendation — eligibility, protocol changes, and site-level status can shift frequently, so always verify current details on ClinicalTrials.gov and consult a qualified healthcare provider before acting on anything you see here.
Frequently Asked Questions
How many clinical trials are there for Bariatric Surgery?
PlainTrial tracks 16 US clinical trials for Bariatric Surgery, of which 6 are currently recruiting participants. Data sourced from ClinicalTrials.gov.
How do I find a recruiting trial for Bariatric Surgery?
Use the trial list above filtered by "Recruiting" status, or visit our trial finder at /recruiting to search by condition and state. Always discuss trial participation with your healthcare provider before enrolling.
Is this data current?
Data is sourced from ClinicalTrials.gov and reflects our most recent data pull. Trial status may have changed since then. Always verify current information at ClinicalTrials.gov before making decisions about participation.
Related
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from ClinicalTrials.gov (National Library of Medicine). Consult a qualified professional before making decisions based on this data.
Read our methodology — how this data is sourced, computed, and verified.
Source: ClinicalTrials.gov (NIH/NLM) ClinicalTrials.gov AACT registry · 2026 Trial counts and statuses sourced from ClinicalTrials.gov. Sponsor counts include both industry and federal/academic sponsors.