{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Walnut&page=2",
    "query": {
      "intervention": "Walnut",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Walnut&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-07T18:10:22.429Z",
  "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": "NCT06430086",
      "title": "Mechanistic Effect of Walnut Consumption on Sleep Quality",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Poor Sleep Quality"
      ],
      "interventions": [
        {
          "name": "Walnut consumption",
          "type": "OTHER"
        },
        {
          "name": "HCHS consumption",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "45 Years to 65 Years"
      },
      "enrollment_count": 24,
      "start_date": "2024-06-28",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-07-31",
      "last_synced_at": "2026-09-07T18:10:22.429Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06430086"
    },
    {
      "nct_id": "NCT05321277",
      "title": "Response of Cardiometabolic Biomarkers and Gut Microbiota to Walnut Consumption",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Diseases"
      ],
      "interventions": [
        {
          "name": "Walnuts",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "No-nut diet",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of California, Davis",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "45 Years to 70 Years"
      },
      "enrollment_count": 30,
      "start_date": "2022-04-19",
      "completion_date": "2026-08",
      "has_results": false,
      "last_update_posted_date": "2026-02-10",
      "last_synced_at": "2026-09-07T18:10:22.429Z",
      "location_count": 1,
      "location_summary": "Davis, California",
      "locations": [
        {
          "city": "Davis",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05321277"
    },
    {
      "nct_id": "NCT02675101",
      "title": "Nuts and Olestra for Persistent Organic Pollutant Reduction (NO-POPs) Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Persistent Organic Pollutants",
        "Endocrine Disrupting Chemicals",
        "Endocrine Disruptor Effects"
      ],
      "interventions": [
        {
          "name": "Whole Nuts",
          "type": "OTHER"
        },
        {
          "name": "Olestra: Fat Free Pringles",
          "type": "OTHER"
        },
        {
          "name": "Vegetable Oil: Original Pringles",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "45 Years to 70 Years"
      },
      "enrollment_count": 45,
      "start_date": "2016-03",
      "completion_date": "2019-04-01",
      "has_results": false,
      "last_update_posted_date": "2019-07-05",
      "last_synced_at": "2026-09-07T18:10:22.429Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02675101"
    },
    {
      "nct_id": "NCT01072864",
      "title": "Effects of California Walnuts on Vascular Function in Postmenopausal Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Cardiovascular Diseases"
      ],
      "interventions": [
        {
          "name": "Walnuts",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, Davis",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "70 Years",
        "sex": "FEMALE",
        "summary": "50 Years to 70 Years · Female only"
      },
      "enrollment_count": 5,
      "start_date": "2010-06",
      "completion_date": "2010-09",
      "has_results": false,
      "last_update_posted_date": "2010-11-01",
      "last_synced_at": "2026-09-07T18:10:22.429Z",
      "location_count": 1,
      "location_summary": "Davis, California",
      "locations": [
        {
          "city": "Davis",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01072864"
    },
    {
      "nct_id": "NCT02050165",
      "title": "Snacking, Satiety &Weight: A Randomized, Controlled Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "KIND Bars",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Typical American Snack",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Griffin Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "25 Years to 75 Years"
      },
      "enrollment_count": 34,
      "start_date": "2012-04",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2020-03-26",
      "last_synced_at": "2026-09-07T18:10:22.429Z",
      "location_count": 1,
      "location_summary": "Derby, Connecticut",
      "locations": [
        {
          "city": "Derby",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02050165"
    },
    {
      "nct_id": "NCT02927028",
      "title": "The Effects of Mastication on Energy Release From Walnuts",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Chewing",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Purdue 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": 50,
      "start_date": "2015-08-01",
      "completion_date": "2016-12-30",
      "has_results": false,
      "last_update_posted_date": "2023-12-12",
      "last_synced_at": "2026-09-07T18:10:22.429Z",
      "location_count": 1,
      "location_summary": "West Lafayette, Indiana",
      "locations": [
        {
          "city": "West Lafayette",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02927028"
    },
    {
      "nct_id": "NCT05500976",
      "title": "Metabolomics Initiative: Mediterranean-amplified vs Habitual Western Diet on Food Signatures, Health, and Microbiome",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dietary Habits"
      ],
      "interventions": [
        {
          "name": "Semi-controlled dietary intervention - Western",
          "type": "OTHER"
        },
        {
          "name": "Semi-controlled dietary intervention - MiniMed",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "69 Years",
        "sex": "ALL",
        "summary": "30 Years to 69 Years"
      },
      "enrollment_count": 22,
      "start_date": "2022-11-21",
      "completion_date": "2025-03-31",
      "has_results": false,
      "last_update_posted_date": "2024-08-27",
      "last_synced_at": "2026-09-07T18:10:22.429Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05500976"
    },
    {
      "nct_id": "NCT01787214",
      "title": "Walnuts and Glucose Variability",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Type-2 Diabetes"
      ],
      "interventions": [
        {
          "name": "Full dose",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Half dose",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Control",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Loma Linda University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "40 Years to 70 Years"
      },
      "enrollment_count": 18,
      "start_date": "2013-06",
      "completion_date": "2013-09",
      "has_results": false,
      "last_update_posted_date": "2014-03-18",
      "last_synced_at": "2026-09-07T18:10:22.429Z",
      "location_count": 1,
      "location_summary": "Loma Linda, California",
      "locations": [
        {
          "city": "Loma Linda",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01787214"
    },
    {
      "nct_id": "NCT06942351",
      "title": "Effect of Walnuts on Cognitive Function and Gut Microbiome in Older Adults",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Aging",
        "Inflammation Biomarkers"
      ],
      "interventions": [
        {
          "name": "Walnuts",
          "type": "OTHER"
        },
        {
          "name": "Crackers",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Oregon State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "55 Years and older"
      },
      "enrollment_count": 90,
      "start_date": "2025-06-09",
      "completion_date": "2029-05",
      "has_results": false,
      "last_update_posted_date": "2026-08-07",
      "last_synced_at": "2026-09-07T18:10:22.429Z",
      "location_count": 1,
      "location_summary": "Corvallis, Oregon",
      "locations": [
        {
          "city": "Corvallis",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06942351"
    },
    {
      "nct_id": "NCT04307628",
      "title": "Response of Gut Microbiota and Cardiometabolic Biomarkers to Consumption of Walnuts",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy",
        "Normal Weight",
        "Overweight",
        "Obese"
      ],
      "interventions": [
        {
          "name": "Walnut",
          "type": "OTHER"
        },
        {
          "name": "Nut-Free",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, Davis",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "20 Years to 65 Years"
      },
      "enrollment_count": 0,
      "start_date": "2022-06-01",
      "completion_date": "2024-11-30",
      "has_results": false,
      "last_update_posted_date": "2024-05-22",
      "last_synced_at": "2026-09-07T18:10:22.429Z",
      "location_count": 1,
      "location_summary": "Davis, California",
      "locations": [
        {
          "city": "Davis",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04307628"
    }
  ]
}