{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Weight+loss+surgery&page=2",
    "query": {
      "intervention": "Weight loss surgery",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 565,
    "total_pages": 57,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Weight+loss+surgery&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Weight+loss+surgery&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-11T02:48:35.425Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT02598531",
      "title": "Surgical Weight-Loss to Improve Functional Status Trajectories Following Total Knee Arthroplasty (SWIFT Trial)",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Obesity",
        "Osteoarthritis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Geisinger Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "22 Years to 75 Years"
      },
      "enrollment_count": 289,
      "start_date": "2016-01",
      "completion_date": "2024-10-31",
      "has_results": false,
      "last_update_posted_date": "2025-01-22",
      "last_synced_at": "2026-10-11T02:48:35.425Z",
      "location_count": 1,
      "location_summary": "Danville, Pennsylvania",
      "locations": [
        {
          "city": "Danville",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02598531"
    },
    {
      "nct_id": "NCT04605081",
      "title": "Pharmacological and Behavioral Treatments After Bariatric Surgery: Maintenance Treatment (Stage 2a)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Loss-of-Control Eating",
        "Obesity/Overweight"
      ],
      "interventions": [
        {
          "name": "Naltrexone and Bupropion (NB) medication",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 24,
      "start_date": "2022-06-10",
      "completion_date": "2026-06-04",
      "has_results": true,
      "last_update_posted_date": "2026-08-26",
      "last_synced_at": "2026-10-11T02:48:35.425Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04605081"
    },
    {
      "nct_id": "NCT04662801",
      "title": "Weight Regain Treatment Post-Bariatric Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Obesity, Overweight"
      ],
      "interventions": [
        {
          "name": "Behavioral Weight Loss (BWL)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Early Responder: BWL continued",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Early Non-responder: BWL continued with medication added",
          "type": "COMBINATION_PRODUCT"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "COMBINATION_PRODUCT"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 26,
      "start_date": "2021-08-05",
      "completion_date": "2022-09-13",
      "has_results": true,
      "last_update_posted_date": "2023-11-13",
      "last_synced_at": "2026-10-11T02:48:35.425Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04662801"
    },
    {
      "nct_id": "NCT03070509",
      "title": "Pharmacokinetics of Lisdexamfetamine (Vyvanse®) in Post-bariatric Surgery Patients",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Lisdexamfetamine"
      ],
      "interventions": [
        {
          "name": "Lisdexamfetamine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "North Dakota State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 20,
      "start_date": "2017-05-12",
      "completion_date": "2019-07",
      "has_results": false,
      "last_update_posted_date": "2018-08-23",
      "last_synced_at": "2026-10-11T02:48:35.425Z",
      "location_count": 1,
      "location_summary": "Fargo, North Dakota",
      "locations": [
        {
          "city": "Fargo",
          "state": "North Dakota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03070509"
    },
    {
      "nct_id": "NCT05224791",
      "title": "A Retrospective Multicenter Comparison of Laparoscopic and Robotic-Assisted Roux-en-Y Gastrectomy",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Laparoscopic Sleeve Gastrectomy",
        "Sleeve Gastrectomy"
      ],
      "interventions": [
        {
          "name": "Roux-en-Y Gastric Bypass",
          "type": "PROCEDURE"
        },
        {
          "name": "Sleeve Gastrectomy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Methodist Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 400,
      "start_date": "2020-06-26",
      "completion_date": "2025-04-08",
      "has_results": false,
      "last_update_posted_date": "2024-03-28",
      "last_synced_at": "2026-10-11T02:48:35.425Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05224791"
    },
    {
      "nct_id": "NCT01801189",
      "title": "Preoperative Pain Control in Gastric Bypass Surgery Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Post-operative Pain"
      ],
      "interventions": [
        {
          "name": "Pregabalin",
          "type": "DRUG"
        },
        {
          "name": "Placebo (for Pregabalin)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Legacy Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 61,
      "start_date": "2013-02",
      "completion_date": "2016-01",
      "has_results": true,
      "last_update_posted_date": "2022-07-14",
      "last_synced_at": "2026-10-11T02:48:35.425Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01801189"
    },
    {
      "nct_id": "NCT03617185",
      "title": "Effect of Exercise and Surgical Weight Loss on Polyneuropathy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Polyneuropathies",
        "Obesity",
        "Bariatric Surgery Candidate"
      ],
      "interventions": [
        {
          "name": "High Intensity Interval Training (HIIT)",
          "type": "OTHER"
        },
        {
          "name": "Routine Exercise",
          "type": "OTHER"
        },
        {
          "name": "Bariatric surgery",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 140,
      "start_date": "2018-07-27",
      "completion_date": "2024-08-01",
      "has_results": true,
      "last_update_posted_date": "2026-09-17",
      "last_synced_at": "2026-10-11T02:48:35.425Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03617185"
    },
    {
      "nct_id": "NCT02728661",
      "title": "Patient-Centered Weight Loss Program for Knee Replacement Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "ARTHROPLASTY, REPLACEMENT"
      ],
      "interventions": [
        {
          "name": "PACE",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Delayed PACE",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "79 Years",
        "sex": "ALL",
        "summary": "40 Years to 79 Years"
      },
      "enrollment_count": 16,
      "start_date": "2016-05",
      "completion_date": "2017-06",
      "has_results": false,
      "last_update_posted_date": "2023-10-26",
      "last_synced_at": "2026-10-11T02:48:35.425Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02728661"
    },
    {
      "nct_id": "NCT04841057",
      "title": "Biometabolic Outcomes After Weight Loss Surgery: An Individualized Approach",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity, Morbid",
        "Metabolic Syndrome",
        "NASH - Nonalcoholic Steatohepatitis"
      ],
      "interventions": [
        {
          "name": "50 cm BP limb length",
          "type": "PROCEDURE"
        },
        {
          "name": "100 cm BP limb length",
          "type": "PROCEDURE"
        },
        {
          "name": "150 cm BP limb length",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Missouri-Columbia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 750,
      "start_date": "2021-11-01",
      "completion_date": "2031-03-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-10",
      "last_synced_at": "2026-10-11T02:48:35.425Z",
      "location_count": 1,
      "location_summary": "Columbia, Missouri",
      "locations": [
        {
          "city": "Columbia",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04841057"
    },
    {
      "nct_id": "NCT04940429",
      "title": "Eye Movement Testing in Patients With Obesity and the Impact of Weight Loss Surgery",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Bariatric Surgery Candidate",
        "Obesity, Morbid"
      ],
      "interventions": [
        {
          "name": "Neurofit",
          "type": "DEVICE"
        },
        {
          "name": "Psychometric hepatic encephalopathy score",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 19,
      "start_date": "2018-11-27",
      "completion_date": "2021-06-17",
      "has_results": false,
      "last_update_posted_date": "2021-06-25",
      "last_synced_at": "2026-10-11T02:48:35.425Z",
      "location_count": 1,
      "location_summary": "Redwood City, California",
      "locations": [
        {
          "city": "Redwood City",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04940429"
    }
  ]
}