{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Weight+Watchers+Intervention",
    "query": {
      "intervention": "Weight Watchers Intervention"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 13,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Weight+Watchers+Intervention&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-21T02:38:02.931Z",
  "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": "NCT02083744",
      "title": "Project Fluido: Fluid Watchers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Congestive Heart Failure"
      ],
      "interventions": [
        {
          "name": "PsychoEducational Support",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual Care",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 42,
      "start_date": "2013-06",
      "completion_date": "2014-12-22",
      "has_results": false,
      "last_update_posted_date": "2020-02-17",
      "last_synced_at": "2026-09-21T02:38:02.931Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02083744"
    },
    {
      "nct_id": "NCT01900392",
      "title": "Financial Incentives for Maintenance of Weight Loss",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Financial incentive",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "30 Years to 80 Years"
      },
      "enrollment_count": 191,
      "start_date": "2013-09",
      "completion_date": "2016-02",
      "has_results": true,
      "last_update_posted_date": "2018-09-27",
      "last_synced_at": "2026-09-21T02:38:02.931Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01900392"
    },
    {
      "nct_id": "NCT04202133",
      "title": "Neurocognitive Benefits of a Weight Management Program",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Overweight and Obesity"
      ],
      "interventions": [
        {
          "name": "WW (formerly Weight Watchers)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Waitlist",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 60 Years · Female only"
      },
      "enrollment_count": 61,
      "start_date": "2019-11-20",
      "completion_date": "2021-07-20",
      "has_results": true,
      "last_update_posted_date": "2025-02-10",
      "last_synced_at": "2026-09-21T02:38:02.931Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04202133"
    },
    {
      "nct_id": "NCT04302727",
      "title": "Delicious Eating for Life in Southern Homes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Weight Loss",
        "Diet, Healthy",
        "Cardiovascular Risk Factor"
      ],
      "interventions": [
        {
          "name": "Med-South Weight Loss Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "WW",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 360,
      "start_date": "2020-07-06",
      "completion_date": "2024-06-16",
      "has_results": true,
      "last_update_posted_date": "2025-11-03",
      "last_synced_at": "2026-09-21T02:38:02.931Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04302727"
    },
    {
      "nct_id": "NCT03079128",
      "title": "Evaluation of a Commercial Program on Weight Loss and Health Outcomes 2",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Weight Loss"
      ],
      "interventions": [
        {
          "name": "Intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 150,
      "start_date": "2017-02-15",
      "completion_date": "2017-09-18",
      "has_results": false,
      "last_update_posted_date": "2018-04-04",
      "last_synced_at": "2026-09-21T02:38:02.931Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03079128"
    },
    {
      "nct_id": "NCT05395377",
      "title": "Preventing Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "PreDiabetes"
      ],
      "interventions": [
        {
          "name": "Registered Dietitian/Nutritionist",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Diabetes Prevention Program",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Weight Watchers, Reimagined",
          "type": "BEHAVIORAL"
        },
        {
          "name": "DPP or RDN Counseling + Medication",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Bariatric Surgery Evaluation",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "Geisinger Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "18 Years to 89 Years"
      },
      "enrollment_count": 84,
      "start_date": "2017-12-18",
      "completion_date": "2021-11-16",
      "has_results": false,
      "last_update_posted_date": "2022-05-27",
      "last_synced_at": "2026-09-21T02:38:02.931Z",
      "location_count": 1,
      "location_summary": "Danville, Pennsylvania",
      "locations": [
        {
          "city": "Danville",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05395377"
    },
    {
      "nct_id": "NCT01630499",
      "title": "My Lifestyle Intervention of Food and Exercise",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Tailored Lifestyle Intervention (TLI)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Commercial Weight Loss Program (CWLP)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "21 Years to 65 Years · Female only"
      },
      "enrollment_count": 87,
      "start_date": "2012-10",
      "completion_date": "2016-07",
      "has_results": false,
      "last_update_posted_date": "2016-09-30",
      "last_synced_at": "2026-09-21T02:38:02.931Z",
      "location_count": 2,
      "location_summary": "Gainesville, Florida • Jacksonville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01630499"
    },
    {
      "nct_id": "NCT02000024",
      "title": "Assessing the Effectiveness of a Weight Watchers-based Lifestyle Intervention for the Primary Prevention of Type 2 Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prediabetes",
        "Gestational Diabetes Mellitus",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Weight Watchers",
          "type": "BEHAVIORAL"
        },
        {
          "name": "National Diabetes Education Program",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 225,
      "start_date": "2011-12",
      "completion_date": "2016-03",
      "has_results": false,
      "last_update_posted_date": "2016-04-08",
      "last_synced_at": "2026-09-21T02:38:02.931Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02000024"
    },
    {
      "nct_id": "NCT05279729",
      "title": "Efficacy of mHealth Apps for Health in a Low-income, Type II Diabetic, Hispanic Population",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetes Mellitus, Type 2",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Mobile health application",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "San Diego State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 45,
      "start_date": "2022-08-01",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2025-10-06",
      "last_synced_at": "2026-09-21T02:38:02.931Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05279729"
    },
    {
      "nct_id": "NCT01922934",
      "title": "A Toolbox Approach to Obesity Treatment in Primary Care",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Commercial weight loss program",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Colorado Weigh",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Meal replacements",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Obesity pharmacotherapy",
          "type": "DRUG"
        },
        {
          "name": "Recreation center passes",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DIETARY_SUPPLEMENT",
        "DRUG"
      ],
      "sponsor": "Denver Health and Hospital Authority",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 4730,
      "start_date": "2014-01",
      "completion_date": "2016-08",
      "has_results": true,
      "last_update_posted_date": "2017-08-18",
      "last_synced_at": "2026-09-21T02:38:02.931Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01922934"
    }
  ]
}