{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Weight+loss+diet&page=33",
    "query": {
      "intervention": "Weight loss diet",
      "page": 33
    },
    "page_size": 10
  },
  "pagination": {
    "page": 33,
    "page_size": 10,
    "total_count": 893,
    "total_pages": 90,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Weight+loss+diet&page=34&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Weight+loss+diet&page=32&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-17T15:01:56.871Z",
  "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": "NCT00907660",
      "title": "A Randomized Trial Comparing Two Doses of Portion-Controlled Foods Within a Primary Care Weight Loss Program",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Weight loss counseling",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Portion-Controlled Foods",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Kaiser Permanente",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2009-05",
      "completion_date": "2010-03",
      "has_results": false,
      "last_update_posted_date": "2020-01-30",
      "last_synced_at": "2026-10-17T15:01:56.871Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00907660"
    },
    {
      "nct_id": "NCT01537796",
      "title": "Comparison of a Technology-based System and an In-person Behavioral Weight Loss Intervention in the Severely Obese",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "In-Person weight loss",
          "type": "BEHAVIORAL"
        },
        {
          "name": "FIT weight loss",
          "type": "BEHAVIORAL"
        },
        {
          "name": "FIT-BT weight loss",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "21 Years to 55 Years"
      },
      "enrollment_count": 39,
      "start_date": "2012-02",
      "completion_date": "2013-07",
      "has_results": false,
      "last_update_posted_date": "2015-08-05",
      "last_synced_at": "2026-10-17T15:01:56.871Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01537796"
    },
    {
      "nct_id": "NCT05874726",
      "title": "Biological Sample Repository for Gastrointestinal Disorders",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Obesity",
        "Obesity, Morbid",
        "Obesity, Primary",
        "Gastro-Intestinal Disorder",
        "Overweight and Obesity",
        "Overweight",
        "Overweight or Obesity",
        "Diabetes Type 2",
        "Diabetes Mellitus",
        "Diabetes Mellitus, Type 2",
        "Hypertension",
        "Hyperlipidemias",
        "Sleep Apnea",
        "GERD",
        "Gastroesophageal Reflux",
        "Musculoskeletal Pain Disorder",
        "Cancer"
      ],
      "interventions": [
        {
          "name": "Blood Collection",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Urine Collection",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Tissue Sample Collection",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Pichamol Jirapinyo, MD, MPH",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 500,
      "start_date": "2023-07-19",
      "completion_date": "2029-04",
      "has_results": false,
      "last_update_posted_date": "2025-12-02",
      "last_synced_at": "2026-10-17T15:01:56.871Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05874726"
    },
    {
      "nct_id": "NCT02109068",
      "title": "Lifestyle, Exercise and Nutrition Study 1",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Breast Cancer",
        "Weight Loss"
      ],
      "interventions": [
        {
          "name": "Weight Loss Counseling- Phone",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Weight Loss Counseling- In-Person",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 75 Years · Female only"
      },
      "enrollment_count": 100,
      "start_date": "2011-01",
      "completion_date": "2014-01",
      "has_results": false,
      "last_update_posted_date": "2014-04-09",
      "last_synced_at": "2026-10-17T15:01:56.871Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02109068"
    },
    {
      "nct_id": "NCT07095543",
      "title": "Plant-Based Online Weight Loss Through Education and Resources Program and Study",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Type 2 Diabetes",
        "Overweight and Obese Adults"
      ],
      "interventions": [
        {
          "name": "Low-fat, vegan diet",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Physicians Committee for Responsible Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2026-01-02",
      "completion_date": "2028-10-30",
      "has_results": false,
      "last_update_posted_date": "2026-09-17",
      "last_synced_at": "2026-10-17T15:01:56.871Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07095543"
    },
    {
      "nct_id": "NCT00912210",
      "title": "Higher Protein Diet and Exercise for Optimal Weight Loss in Elderly Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Bone and Body Composition",
        "Obesity",
        "Metabolic Syndrome",
        "Physical Function",
        "Quality of Life"
      ],
      "interventions": [
        {
          "name": "Whey protein isolate",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Maltodextrin powder supplement",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Illinois at Urbana-Champaign",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": "80 Years",
        "sex": "FEMALE",
        "summary": "60 Years to 80 Years · Female only"
      },
      "enrollment_count": 31,
      "start_date": "2009-04",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2009-06-03",
      "last_synced_at": "2026-10-17T15:01:56.871Z",
      "location_count": 1,
      "location_summary": "Urbana, Illinois",
      "locations": [
        {
          "city": "Urbana",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00912210"
    },
    {
      "nct_id": "NCT01302379",
      "title": "Reach for Health Study: Obesity-related Mechanisms and Mortality in Breast Cancer Survivors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Neoplasms"
      ],
      "interventions": [
        {
          "name": "Metformin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Lifestyle intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Standard printed dietary guidelines",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 333,
      "start_date": "2011-08",
      "completion_date": "2016-12",
      "has_results": true,
      "last_update_posted_date": "2020-06-05",
      "last_synced_at": "2026-10-17T15:01:56.871Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01302379"
    },
    {
      "nct_id": "NCT07012317",
      "title": "A Trial to Assess Gastrointestinal Responses to Dietary Fibers in Adults Using Weight Loss Medications",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Gastrointestinal Symptoms",
        "Weight Loss",
        "GLP-1"
      ],
      "interventions": [
        {
          "name": "High Fiber Bar with Inulin",
          "type": "OTHER"
        },
        {
          "name": "High Fiber bar with Fiber Blend",
          "type": "OTHER"
        },
        {
          "name": "High Fiber Bar with Resistant Starch type 4",
          "type": "OTHER"
        },
        {
          "name": "Low Fiber Bar",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Midwest Center for Metabolic and Cardiovascular Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "25 Years to 64 Years"
      },
      "enrollment_count": 50,
      "start_date": "2025-05-29",
      "completion_date": "2025-11-24",
      "has_results": false,
      "last_update_posted_date": "2026-01-08",
      "last_synced_at": "2026-10-17T15:01:56.871Z",
      "location_count": 2,
      "location_summary": "Miami Gardens, Florida • Port Saint Lucie, Florida",
      "locations": [
        {
          "city": "Miami Gardens",
          "state": "Florida"
        },
        {
          "city": "Port Saint Lucie",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07012317"
    },
    {
      "nct_id": "NCT03156660",
      "title": "Efficacy of Two Novel Behavioral Post-cessation Weight Gain Interventions",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Weight Change, Body",
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Weight gain prevention (Group 1)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Weight loss intervention (Group 2)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Self-guided intervention (Group 3)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Tennessee",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 305,
      "start_date": "2017-11-30",
      "completion_date": "2022-03-12",
      "has_results": true,
      "last_update_posted_date": "2023-04-21",
      "last_synced_at": "2026-10-17T15:01:56.871Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03156660"
    },
    {
      "nct_id": "NCT03572218",
      "title": "Psychological Intervention to Reduce Weight Bias Internalization",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Stigmatization",
        "Obesity",
        "Weight Loss"
      ],
      "interventions": [
        {
          "name": "BWL",
          "type": "BEHAVIORAL"
        },
        {
          "name": "BIAS",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "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": 72,
      "start_date": "2018-04-10",
      "completion_date": "2019-10-18",
      "has_results": true,
      "last_update_posted_date": "2020-10-23",
      "last_synced_at": "2026-10-17T15:01:56.871Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03572218"
    }
  ]
}