Condition

Clinical trials for Bariatric Surgery

Active public studies that list Bariatric Surgery as a condition.

63active studies

36recruiting now

20countries represented

14largest site network

Current studies

Status and location data reflect the registry snapshot built 2026-09-08. Verify the original record before contacting a site.

Recruiting nowNot applicable

Postoperative Nausea, Vomiting and Pain After Bariatric Surgery - a National Registry Study

Postoperative Nausea and Vomiting, Postoperative PainCondition

Intervention not listedTreatment

Sweden2 locations

Umeå UniversitySponsor

Updated 2026-09-01 · NCT07797374See eligibility →

Recruiting nowNot applicable

Comparison of Hormonal Response to a Mixed-Meal Tolerance Test After Laparoscopic Roux-en-Y Gastric Bypass Versus Laparoscopic Sleeve Gastrectomy With Duodenojejunal Bypass in Patients With Super Morbid Obesity

Bariatric Surgery, Hormonal ResponseCondition

Sleeve gastrectomy with duodenojejunal bypass, Roux-en-Y gastric bypassTreatment

Thailand1 locations

Chulalongkorn UniversitySponsor

Updated 2026-08-06 · NCT07747779See eligibility →

Recruiting nowNot applicable

Digital Follow-Up and Nursing Education in Bariatric Surgery Patients

Obesity (BMI > 35), Bariatric SurgeryCondition

Structured Nursing Education and Exercise ProgramTreatment

Turkey (Türkiye)1 locations

Okan UniversitySponsor

Updated 2026-07-28 · NCT07457034See eligibility →

Recruiting nowNot applicable

Sarcopenia Indicators After Bariatric Surgery

Obesity, SarcopeniaCondition

Intervention not listedTreatment

Turkey (Türkiye)1 locations

Hatice Zehra FERHATLARSponsor

Updated 2026-07-21 · NCT07717333See eligibility →

Recruiting nowPhase 1

Physiologic Response to Bariatric Surgery and the Impact of Adjunct Semaglutide in Adolescents

Obesity, Adolescent ObesityCondition

Injectable semaglutide or injectable tirzepatide, Standard postoperative careTreatment

United States1 locations

University of Colorado, DenverSponsor

Updated 2026-07-15 · NCT06575738See eligibility →

Recruiting nowNot applicable

Mechanistic and Clinical Outcomes of a Surgical Innovation Aimed at Minimizing GERD Associated With VSG (INNOVATE-VSG)

Obesity, Bariatric SurgeryCondition

Modified Vertical Sleeve Gastrectomy (mVSG), Conventional Vertical Sleeve Gastrectomy (cVSG)Treatment

United States2 locations

University of California, IrvineSponsor

Updated 2026-07-14 · NCT06783751See eligibility →

Recruiting nowNot applicable

Dramatherapy for Psychological and Social Well-Being in Obesity and Bariatric Care

Obesity (Disorder), Obesity & OverweightCondition

Adapted Physical Activity, DramatherapyTreatment

France1 locations

Universite du Littoral Cote d'OpaleSponsor

Updated 2026-07-06 · NCT07685483See eligibility →

Recruiting nowNot applicable

Time-Restricted Eating After Bariatric Surgery

Obesity & Overweight, Bariatric SurgeryCondition

Time-Restricted Eating (16:8)Treatment

Turkey (Türkiye)2 locations

Medipol UniversitySponsor

Updated 2026-06-29 · NCT07672821See eligibility →

Recruiting nowNot applicable

Identification of Pre-surgical Phenotypic Indicators Predictive of Quality of Life Trajectories in Obese Patients Following Bariatric Surgery

Obesity, Morbid, Obesity and OverweightCondition

Hospital Anxiety and Depression Scale, Dutch Eating Behaviour QuestionnaryTreatment

France1 locations

Centre Hospitalier Metropole SavoieSponsor

Updated 2026-06-10 · NCT06951893See eligibility →

Recruiting nowNot applicable

Effect of Transcutaneous Electrical Nerve Stimulation on PODD in Bariatric Surgery Patients

Bariatric Surgery, Bariatric Surgery CandidateCondition

Transcutaneous nerve stimulator, Sham TENSTreatment

Egypt2 locations

Cairo UniversitySponsor

Updated 2026-05-20 · NCT07569705See eligibility →

Recruiting nowPhase 4

2024 Tirzepatide-Bariatric Surgery

Obesity and Obesity-related Medical Conditions, Bariatric SurgeryCondition

tirzepatide, Standard of CareTreatment

United States1 locations

Marlene StarrSponsor

Updated 2026-05-14 · NCT06721507See eligibility →

Recruiting nowNot applicable

Periodontal Microbiota of Patients Candidates for Bariatric Surgery With Body Mass Index Greater Than 30

Bariatric Surgery, Obesity, MorbidCondition

Intervention not listedTreatment

France1 locations

University Hospital, ToulouseSponsor

Updated 2026-05-08 · NCT06781229See eligibility →

Recruiting nowNot applicable

Impact of a Pro-diversity Gut Microbiota Diet After a Bariatric Surgery on Gut Microbiota, Eating Behaviour and Sensory Function

Obesity (Disorder), Bariatric SurgeryCondition

Nutritional counselingTreatment

France3 locations

Hospices Civils de LyonSponsor

Updated 2026-04-03 · NCT07268508See eligibility →

Recruiting nowNot applicable

Indocyanine Green Fluorescence Angiography (ICG-FA) in Revisional Bariatric Surgery

Obesity, Bariatric SurgeryCondition

Indocyanine Green AngiogramTreatment

Mexico1 locations

Instituto Mexicano del Seguro SocialSponsor

Updated 2026-03-27 · NCT07000539See eligibility →

Recruiting nowNot applicable

Flow-Controlled Versus Volume-Controlled Ventilation in Bariatric Surgery

Obesity, Bariatric SurgeryCondition

FCV Group, VCV GroupTreatment

Turkey (Türkiye)1 locations

Ankara Etlik City HospitalSponsor

Updated 2026-02-25 · NCT07430111See eligibility →

Recruiting nowNot applicable

Effects of Respiratory Muscle Training in Post-bariatric Surgery Patients

Bariatric SurgeryCondition

Institutionalized therapeutic exercise, Inspiratory muscle trainingTreatment

Ecuador1 locations

University Ramon LlullSponsor

Updated 2026-02-18 · NCT07289958See eligibility →

Recruiting nowNot applicable

Scalp Hair Metabolomics in Severe Obesity

Obesity & Overweight, Hair LossCondition

Intervention not listedTreatment

Singapore1 locations

Singapore General HospitalSponsor

Updated 2026-02-13 · NCT07368842See eligibility →

Recruiting nowNot applicable

Gastro-Intestinal Digestion and Physiology After Bariatric Surgery

Bariatric Surgery, Roux-en Y Gastric BypassCondition

Gastro-intestinal aspiration, TelemetricTreatment

Netherlands1 locations

Universitaire Ziekenhuizen KU LeuvenSponsor

Updated 2026-01-20 · NCT07286968See eligibility →

Recruiting nowNot applicable

EFFECTS OF SUPERVISED PHYSICAL EXERCISE AFTER BARIATRIC SURGERY ON MUSCLE MASS AND BONE DENSITY (OBEFIT STUDY)

Obesity &Amp;Amp; Overweight, Bariatric SurgeryCondition

physical exercise programmeTreatment

Spain2 locations

Hospitales Universitarios Virgen del RocíoSponsor

Updated 2026-01-08 · NCT07324447See eligibility →

Recruiting nowNot applicable

Modified Thoracoabdominal Nerve Plane Block In Laparoscopic Sleeve Gastrectomy

Obesity, Bariatric SurgeryCondition

M-TAPA block, Postoperative pain managementTreatment

Turkey (Türkiye)1 locations

Istanbul Medipol University HospitalSponsor

Updated 2025-12-24 · NCT06515691See eligibility →

Recruiting nowNot applicable

Tailored Stapled SADI-S: Initial Report and Preliminary Results

Morbid Obesity, Bariatric SurgeryCondition

Bariatric surgeryTreatment

Egypt1 locations

El-Sahel Teaching HospitalSponsor

Updated 2025-12-17 · NCT07289555See eligibility →

Recruiting nowNot applicable

Study on Supplement of Intravenous Ferric Derisomaltose to Prevent Anemia and Improve the Quality of Life in Obese Patients With Iron Deficiency.

Obesity, AnemiaCondition

Iron Isomaltoside injection, Physiological saline solution (as placebo)Treatment

China1 locations

China-Japan Friendship HospitalSponsor

Updated 2025-11-19 · NCT07236788See eligibility →

Recruiting nowNot applicable

Comparison of the Occurrence of Postoperative Complications Between Robotic and Laparoscopic Surgery in Revision Bariatric Surgery

Obesity and Overweight, Bariatric SurgeryCondition

Intervention not listedTreatment

France2 locations

GCS Ramsay Santé pour l'Enseignement et la RechercheSponsor

Updated 2025-09-18 · NCT07180316See eligibility →

Recruiting nowNot applicable

Comparison of Nissen-Sleeve and Gastric Bypass for GERD in Obese Patients

Gastro Esophageal Reflux, Severe ObesityCondition

Nissen-Sleeve Gastrectomy (N-SG), Roux-en-Y Gastric Bypass (RYGB)Treatment

Poland1 locations

Jagiellonian UniversitySponsor

Updated 2025-09-05 · NCT07158008See eligibility →

Recruiting nowNot applicable

Radiomics of Intra-abdominal and Subcutaneous Adipose Tissue Predict the Efficacy of Bariatric Surgery (RISABS)

Obesity, Type 2 Diabetes MellitusCondition

Intervention not listedTreatment

China1 locations

China-Japan Friendship HospitalSponsor

Updated 2025-08-03 · NCT06169033See eligibility →

Recruiting nowPhase 4

Role of Tranexamic Acid in Reducing Hemorrhagic Events in Bariatric Surgery

Hemorrhage, Bariatric SurgeryCondition

Tranexamic Acid, Normal Saline (Placebo)Treatment

Pakistan1 locations

Patel Hospital, PakistanSponsor

Updated 2025-08-01 · NCT07098780See eligibility →

Recruiting nowNot applicable

Establishment of a Classification System and Postoperative Risk Warning Model for Patients Undergoing Bariatric Metabolic Surgery for Severe Obesity

Obesity, Bariatric SurgeryCondition

Intervention not listedTreatment

China1 locations

The Third Xiangya Hospital of Central South UniversitySponsor

Updated 2025-07-30 · NCT07093502See eligibility →

Recruiting nowNot applicable

Monitoring Nutritional Consequences of Obesity Treatment on Women's Health

Obesity and Obesity-related Medical Conditions, Bariatric SurgeryCondition

Intervention not listedTreatment

Netherlands1 locations

Wageningen University and ResearchSponsor

Updated 2025-07-10 · NCT06945016See eligibility →

Recruiting nowNot applicable

Bone Health After Bariatric Surgery in Patients With Type 2 Diabetes

Bariatric Surgery, Bone HealthCondition

Bariatric surgeryTreatment

Canada3 locations

CHU de Quebec-Universite LavalSponsor

Updated 2025-06-10 · NCT03455868See eligibility →

Recruiting nowNot applicable

Bone and Muscle Health Following Sleeve Gastrectomy in Men, Premenopausal and Postmenopausal Women

Bariatric Surgery, Bone HealthCondition

Bariatric surgeryTreatment

Canada1 locations

CHU de Quebec-Universite LavalSponsor

Updated 2025-06-10 · NCT06547515See eligibility →

Recruiting nowNot applicable

Exercise to Fight Obesity

Morbid Obesity, Bariatric SurgeryCondition

Usual Care Group, Controlled exercise with telerehabilitationTreatment

Spain2 locations

Instituto de Investigacion Sanitaria La FeSponsor

Updated 2025-06-04 · NCT06934681See eligibility →

Recruiting nowNot applicable

Sleeve Gastrectomy and Roux-en-Y Gastric Bypass in the Treatment of Type 2 Diabetes Mellitus.

Obesity, Type 2 DiabetesCondition

Roux-en-Y gastric bypass, sleeve gastrectomyTreatment

Sweden1 locations

Göteborg UniversitySponsor

Updated 2025-04-25 · NCT01984762See eligibility →

Recruiting nowNot applicable

Endoscopic Conversion of Sleeve Gastrectomy to Single Anastomosis Sleeve-ileal Bypass (SASI) for Gastroesophageal Reflux (GERD), Primary and Secondary Non-responder.

Metabolic Syndrome, Severe ObesityCondition

Endoscopic SASITreatment

Singapore3 locations

Singapore Health ServicesSponsor

Updated 2025-02-14 · NCT06757296See eligibility →

Recruiting nowNot applicable

Database Concerning Patients Consulting the Obesity Clinic

Overweight and Obesity, Bariatric SurgeryCondition

Lifestyle therapy - individual, Lifestyle therapy - groupTreatment

Belgium1 locations

Universitaire Ziekenhuizen KU LeuvenSponsor

Updated 2024-07-03 · NCT04614961See eligibility →

Recruiting nowNot applicable

Chinese Obesity and MEtabolic Surgery Database (COMES Database)

Obesity, Metabolic SurgeryCondition

Metabolic and Bariatric SurgeryTreatment

China1 locations

Jinan University GuangzhouSponsor

Updated 2024-02-23 · NCT06275061See eligibility →

Recruiting nowNot applicable

Ovarian Reserve and Bariatric Surgery

Bariatric Surgery, ObesityCondition

Bariatric surgeryTreatment

France14 locations

Assistance Publique - Hôpitaux de ParisSponsor

Updated 2024-02-15 · NCT04583150See eligibility →

Opening soonNot applicable

Transition to Ambulatory Bariatric Surgery (TABS) Trial

Obesity and Obesity-related Medical Conditions, Bariatric SurgeryCondition

Same Day DischargeTreatment

United States1 locations

Vanderbilt University Medical CenterSponsor

Updated 2026-08-18 · NCT07011628See eligibility →

Opening soonNot applicable

Metabolic Flux Analysis in Metabolic Dysfunction-Associated Steatotic Liver Disease

Metabolic Dysfunction-Associated Steatotic Liver Disease, Metabolic Dysfunction-Associated SteatohepatitisCondition

Bariatric surgery, Stable isotope tracer infusionTreatment

Locations pending0 locations

Vanderbilt University Medical CenterSponsor

Updated 2026-08-12 · NCT07760909See eligibility →

Opening soonPhase 4

Swap Anesthetic Versus Continuous Desflurane in Adults Undergoing Bariatric Surgery

Obesity, Bariatric SurgeryCondition

Desflurane, Sevoflurane-DesfluraneTreatment

Chile1 locations

Clínica DávilaSponsor

Updated 2026-08-05 · NCT07748247See eligibility →

Opening soonNot applicable

Rosuvastatin and Losartan Pharmacokinetics After Bariatric Surgery

Obesity & Overweight, Bariatric SurgeryCondition

Rosuvastatin, Losartan (Control)Treatment

Brazil1 locations

Hospital das Clínicas de Ribeirão PretoSponsor

Updated 2026-08-05 · NCT07748273See eligibility →

Opening soonNot applicable

Transit Bipartition After Sleeve Gastrectomy

Obesity & Overweight, Gastroesophageal Reflux (GERD)Condition

Conversion to Intestinal Transit BipartitionTreatment

Brazil1 locations

Hospital das Clínicas de Ribeirão PretoSponsor

Updated 2026-08-03 · NCT07728682See eligibility →

Opening soonNot applicable

3D Reconstruction, VR and Machine Learning in Body Image in Bariatrics

Obesity (Disorder), Body ImageCondition

Body Image Counselling with Virtual RealityTreatment

United Kingdom1 locations

Imperial College LondonSponsor

Updated 2026-06-25 · NCT07668492See eligibility →

Opening soonNot applicable

Evaluation of Metabolic Parameters, Intestinal Permeability and Gastrointestinal Symptoms After Bariatric Surgery in Body Weight Management

Obesity, Morbid, Bariatric SurgeryCondition

Clinical and Biochemical AssessmentTreatment

Turkey (Türkiye)1 locations

Toros UniversitySponsor

Updated 2026-06-11 · NCT07643376See eligibility →

Opening soonNot applicable

Eating Behavior, Nutritional Status and Appetite Hormones After Bariatric Surgery

Obesity, Bariatric SurgeryCondition

Anthropometric Measurements and Dietary AssessmentTreatment

Turkey (Türkiye)1 locations

Özlem ÖZPAK AKKUŞSponsor

Updated 2026-06-09 · NCT07636239See eligibility →

Opening soonNot applicable

The OAT Trail: The Obesity Anti-Coagulation Thromboprophylaxis Trial.

Bariatric Surgery, Anti-Xa ActivityCondition

Anti-Xa Activity Monitoring, Tinzaparin (Leo)Treatment

Ireland1 locations

University College DublinSponsor

Updated 2026-05-18 · NCT07559643See eligibility →

Opening soonNot applicable

Dexmedetomidine Versus Ketamine as Adjuvants in Bariatric Surgery

Obesity, Postoperative PainCondition

Dexmedetomidine infusion, Ketamine infusionTreatment

Locations pending0 locations

Tanta UniversitySponsor

Updated 2026-04-09 · NCT06738043See eligibility →

Opening soonNot applicable

Effect of Intraoperative Salbutamol Administration on Mechanical Power and Respiratory Mechanics in Obese Patients Undergoing Laparoscopic Bariatric Surgery

Bariatric SurgeryCondition

Salbutamol (Ventolin®), Normal Saline (0.9% Sodium Chloride)Treatment

Turkey (Türkiye)1 locations

Saglik Bilimleri Universitesi Gazi Yasargil Training and Research HospitalSponsor

Updated 2026-01-30 · NCT07378605See eligibility →

Opening soonNot applicable

Pelvic Floor Disorder Symptoms in Women Seeking Weight Loss Therapy

Lower Urinary Tract Symptoms, Stress Urinary IncontinenceCondition

Bariatric Surgery, GLP1 receptor agonistTreatment

United States1 locations

Hartford HealthCareSponsor

Updated 2025-09-16 · NCT07175805See eligibility →

Opening soonNot applicable

Proof of Concept in the Prevention of Post-bariatric Sarcopenia: Simulated Activation of the "Gravitostat"

Obesity &Amp; Overweight, Bariatric SurgeryCondition

maintaining mechanical loadTreatment

France1 locations

University Hospital, Clermont-FerrandSponsor

Updated 2025-08-13 · NCT07120685See eligibility →

Opening soonNot applicable

Effectiveness of a Modified Cost-Effective Dietary Plan in Promoting Weight Loss and Preservation of Lean Body Mass in Patients After Bariatric Surgery

Obesity, Bariatric SurgeryCondition

Low-Cost Post-Bariatric Diet, Standard High-cost Post-Bariatric DietTreatment

Pakistan1 locations

Khyber Teaching HospitalSponsor

Updated 2025-08-08 · NCT07111767See eligibility →

Opening soonPhase 4

Opioid-Free Versus Opioid-Based Anesthesia in Bariatric

Obesity, Bariatric SurgeryCondition

Intraoperative rescue analgesia, Intraoperative rescue analgesia:Treatment

Locations pending0 locations

Siirt Training and Research HospitalSponsor

Updated 2025-08-06 · NCT07105839See eligibility →

Opening soonNot applicable

Effect of CPAP Versus APAP in Patients With Obesity Undergoing Bariatric Surgery Protocol

Sleep Apnea, Obstructive, Bariatric SurgeryCondition

In the intervention group, patients will be treated with auto-adjusting APAP, providing variable pressures throughout the sleep hours., CPAPTreatment

Spain1 locations

Hospital Universitario Ramon y CajalSponsor

Updated 2025-07-23 · NCT07001215See eligibility →

Opening soonNot applicable

The Effect of Encouraging Patients Undergoing Obesity Surgery to Move on Physical Mobility, Recovery and Negative Effects of Surgery

Physical Activity, Bariatric SurgeryCondition

Mobilization Encouragement Protocol, Smart Watch for Physical Activity MonitoringTreatment

Locations pending0 locations

TC Erciyes UniversitySponsor

Updated 2025-07-16 · NCT07068828See eligibility →

Opening soonNot applicable

Registry on Obesity Surgery in Adolescents

Morbid Obesity, Bariatric SurgeryCondition

bariatric surgeryTreatment

Belgium3 locations

Queen Fabiola Children's University HospitalSponsor

Updated 2019-02-12 · NCT03203161See eligibility →

Active, not recruitingNot applicable

Disordered Eating and Recurrent Weight Gain After MBS

Obesity & Overweight, Bariatric SurgeryCondition

Observational assessmentTreatment

Turkey (Türkiye)1 locations

Medipol UniversitySponsor

Updated 2026-02-25 · NCT07434557See eligibility →

Active, not recruitingNot applicable

One-Year Outcomes After Conversion Bariatric Surgery

Obesity & Overweight, Bariatric SurgeryCondition

Intervention not listedTreatment

Turkey (Türkiye)1 locations

Medipol UniversitySponsor

Updated 2026-02-03 · NCT07345429See eligibility →

Active, not recruitingNot applicable

Role of Dietary Habits in Efficacy of Bariatric Surgery - Study C

Bariatric Surgery, Sleeve GastrectomyCondition

Dietary habits planTreatment

United States1 locations

Brigham and Women's HospitalSponsor

Updated 2025-12-05 · NCT03482986See eligibility →

Active, not recruitingNot applicable

Role of Dietary Habits in Efficacy of Bariatric Surgery - Study B

Bariatric Surgery, Sleeve GastrectomyCondition

In-laboratory assessmentTreatment

United States1 locations

Brigham and Women's HospitalSponsor

Updated 2025-12-04 · NCT03467906See eligibility →

Active, not recruitingNot applicable

Comparing Dumping Symptoms and Quality of Life 6 Months After Sleeve Gastrectomy With or Without Transit Bipartition in Adults With Obesity

Obesity, Morbid ObesityCondition

Sleeve Gastrectomy, Sleeve Gastrectomy with Transit BipartitionTreatment

Egypt1 locations

Mina Kamal Gergis ErianSponsor

Updated 2025-12-04 · NCT07263269See eligibility →

Active, not recruitingNot applicable

Physical Exercise Prehabilitation Program in MEtabolic SuRgery

Obesity and Overweight, Bariatric SurgeryCondition

Physical exercise prehabilitationTreatment

Netherlands1 locations

FlevoziekenhuisSponsor

Updated 2025-03-28 · NCT06889207See eligibility →

This page shows the first 60 studies. Use the full search to filter all matches.

Related conditions

Obesity1,102 Obesity & Overweight220 Overweight205 Overweight and Obesity130 Type 2 Diabetes108 Hypertension107

How current is this page?

The page is rebuilt from the public registry feed. Each trial card shows the registry update date. Recruitment can still change between builds.

Does appearing here mean I qualify?

No. These pages are discovery indexes. Only a study team can confirm eligibility after reviewing the complete protocol criteria.