{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Phone-based+weight+loss+intervention",
    "query": {
      "intervention": "Phone-based weight loss intervention"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 109,
    "total_pages": 11,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Phone-based+weight+loss+intervention&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-17T15:33:46.811Z",
  "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": "NCT03150381",
      "title": "Promoting Weight-Loss in African American Cancer Survivors in the Deep South",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Weight Loss",
        "Cancer"
      ],
      "interventions": [
        {
          "name": "Weight Loss Only",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Weight Loss Plus",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 369,
      "start_date": "2012-05-01",
      "completion_date": "2018-03-31",
      "has_results": false,
      "last_update_posted_date": "2018-05-16",
      "last_synced_at": "2026-10-17T15:33:46.811Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03150381"
    },
    {
      "nct_id": "NCT04266431",
      "title": "EMPOWER Men to Reduce Weight and Inhibit Prostate Cancer Progression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prostatic Neoplasm"
      ],
      "interventions": [
        {
          "name": "EMPOWER",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 20,
      "start_date": "2020-02-20",
      "completion_date": "2025-02-03",
      "has_results": false,
      "last_update_posted_date": "2025-02-12",
      "last_synced_at": "2026-10-17T15:33:46.811Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04266431"
    },
    {
      "nct_id": "NCT01532258",
      "title": "Effectiveness of an Eight Week Online Mediterranean Based Diet",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Go! Foods for You without Weekly MA Support.",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Go! Foods for You with Weekly MA Support.",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "The Cleveland Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 0,
      "start_date": "2012-04",
      "completion_date": "2012-08",
      "has_results": false,
      "last_update_posted_date": "2022-05-11",
      "last_synced_at": "2026-10-17T15:33:46.811Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01532258"
    },
    {
      "nct_id": "NCT00062985",
      "title": "Obesity Treatment in a Managed Care Setting",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Weight Loss"
      ],
      "interventions": [
        {
          "name": "Mail-based weight loss intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Phone-based weight loss intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1801,
      "start_date": "1999-03",
      "completion_date": "2005-02",
      "has_results": false,
      "last_update_posted_date": "2017-10-24",
      "last_synced_at": "2026-10-17T15:33:46.811Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00062985"
    },
    {
      "nct_id": "NCT04105309",
      "title": "Implementation Intentions for Weight Loss and Dietary Change in College Students With Overweight and Obesity",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Implementation Intentions",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Fluency Training",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Text Messages",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Goal Intentions",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "25 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 25 Years · Female only"
      },
      "enrollment_count": 95,
      "start_date": "2017-06-01",
      "completion_date": "2018-06-30",
      "has_results": false,
      "last_update_posted_date": "2019-09-30",
      "last_synced_at": "2026-10-17T15:33:46.811Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04105309"
    },
    {
      "nct_id": "NCT01855932",
      "title": "Enlighten: An Adaptive Technology Weight Loss Intervention",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Weight Loss"
      ],
      "interventions": [
        {
          "name": "Technology Supported",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 10,
      "start_date": "2013-05",
      "completion_date": "2013-09",
      "has_results": false,
      "last_update_posted_date": "2013-09-24",
      "last_synced_at": "2026-10-17T15:33:46.811Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01855932"
    },
    {
      "nct_id": "NCT01864447",
      "title": "Exercise Training After an Acute Blood Clot",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "VTE"
      ],
      "interventions": [
        {
          "name": "VTE REHABILITATION: High-Caloric Expenditure Exercise Training (HCE) and The Dietary Behavioral Weight Loss Intervention (BWL)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Vermont",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "79 Years",
        "sex": "ALL",
        "summary": "16 Years to 79 Years"
      },
      "enrollment_count": 20,
      "start_date": "2013-05",
      "completion_date": "2014-05",
      "has_results": false,
      "last_update_posted_date": "2014-12-04",
      "last_synced_at": "2026-10-17T15:33:46.811Z",
      "location_count": 1,
      "location_summary": "Burlington, Vermont",
      "locations": [
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01864447"
    },
    {
      "nct_id": "NCT04453072",
      "title": "A Study to See if an iPhone Weight Management App Can Help Promote Weight Loss in Adolescents and Young Adults After a Stem Cell Transplant",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Malignant Neoplasm"
      ],
      "interventions": [
        {
          "name": "Interview",
          "type": "OTHER"
        },
        {
          "name": "Media Intervention",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Scale Device",
          "type": "OTHER"
        },
        {
          "name": "Telephone-Based Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Text Message",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "Jonsson Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "13 Years to 30 Years"
      },
      "enrollment_count": 20,
      "start_date": "2020-07-01",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-05-11",
      "last_synced_at": "2026-10-17T15:33:46.811Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04453072"
    },
    {
      "nct_id": "NCT00959660",
      "title": "Exercise Intolerance in Elderly Patients With Diastolic Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure, Diastolic",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Exercise",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Dietary Intervention",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Diet and exercise",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Attention Control",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Wake Forest University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2009-02",
      "completion_date": "2013-08",
      "has_results": true,
      "last_update_posted_date": "2019-02-15",
      "last_synced_at": "2026-10-17T15:33:46.811Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00959660"
    },
    {
      "nct_id": "NCT00901095",
      "title": "Can Diet- and Exercise-Induced Weight Loss Improve Asthma Control in Adults?",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Asthma",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Lifestyle intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Palo Alto Medical Foundation",
      "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": 330,
      "start_date": "2010-02",
      "completion_date": "2014-03",
      "has_results": false,
      "last_update_posted_date": "2014-03-19",
      "last_synced_at": "2026-10-17T15:33:46.811Z",
      "location_count": 8,
      "location_summary": "Fremont, California • Hayward, California • Novato, California + 5 more",
      "locations": [
        {
          "city": "Fremont",
          "state": "California"
        },
        {
          "city": "Hayward",
          "state": "California"
        },
        {
          "city": "Novato",
          "state": "California"
        },
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Richmond",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00901095"
    }
  ]
}