{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Microbial+Composition",
    "query": {
      "condition": "Microbial Composition"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 12,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Microbial+Composition&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-10T18:22:26.810Z",
  "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": "NCT04735835",
      "title": "Personalized Responses to Dietary Composition Trial 3",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetes",
        "Heart Diseases",
        "Diet Habit",
        "Diet Modification",
        "Healthy",
        "Obesity",
        "Metabolism",
        "Microbial Colonization"
      ],
      "interventions": [
        {
          "name": "Dietary Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Zoe Global Limited",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 250000,
      "start_date": "2020-07-20",
      "completion_date": "2030-01-01",
      "has_results": false,
      "last_update_posted_date": "2025-04-16",
      "last_synced_at": "2026-06-10T18:22:26.810Z",
      "location_count": 1,
      "location_summary": "Needham, Massachusetts",
      "locations": [
        {
          "city": "Needham",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04735835"
    },
    {
      "nct_id": "NCT03731702",
      "title": "Optimization of Collection Methods for Studies of the Human Microbiota",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Microbial Composition"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 0,
      "start_date": "2018-11-01",
      "completion_date": "2020-10-27",
      "has_results": false,
      "last_update_posted_date": "2020-10-28",
      "last_synced_at": "2026-06-10T18:22:26.810Z",
      "location_count": 1,
      "location_summary": "Rockville, Maryland",
      "locations": [
        {
          "city": "Rockville",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03731702"
    },
    {
      "nct_id": "NCT03470506",
      "title": "A Study of the Relationship of Gut Microbial Composition and Stroke Outcome",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Ischemic Stroke"
      ],
      "interventions": [
        {
          "name": "Stool Samples",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2018-02-20",
      "completion_date": "2022-07-01",
      "has_results": false,
      "last_update_posted_date": "2019-11-19",
      "last_synced_at": "2026-06-10T18:22:26.810Z",
      "location_count": 2,
      "location_summary": "Charlottesville, Virginia • Fairfax, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        },
        {
          "city": "Fairfax",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03470506"
    },
    {
      "nct_id": "NCT00590330",
      "title": "Microbial Community Composition and Dynamics in Lungs of Cystic Fibrosis Sibling Pairs",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cystic Fibrosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Boston Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "16 Years",
        "sex": "ALL",
        "summary": "1 Year to 16 Years"
      },
      "enrollment_count": 55,
      "start_date": "2007-10",
      "completion_date": "2009-03",
      "has_results": false,
      "last_update_posted_date": "2011-05-13",
      "last_synced_at": "2026-06-10T18:22:26.810Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00590330"
    },
    {
      "nct_id": "NCT03983733",
      "title": "PREDICT 2: Personalized Responses to Dietary Composition Trial 2",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetes",
        "Heart Diseases",
        "Diet Habit",
        "Diet Modification",
        "Microbial Colonization",
        "Healthy",
        "Obesity",
        "Metabolism"
      ],
      "interventions": [
        {
          "name": "Dietary Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Zoe Global Limited",
      "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": 1139,
      "start_date": "2019-06-10",
      "completion_date": "2021-12-01",
      "has_results": false,
      "last_update_posted_date": "2022-01-18",
      "last_synced_at": "2026-06-10T18:22:26.810Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03983733"
    },
    {
      "nct_id": "NCT06546020",
      "title": "Gut Microbiota-dependent Health Impacts of Haskap Berries",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Metabolic Disease",
        "Inflammation",
        "Microbial Colonization"
      ],
      "interventions": [
        {
          "name": "Haskap berry smoothie",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo comparator",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Montana State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "35 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "35 Years to 65 Years"
      },
      "enrollment_count": 120,
      "start_date": "2025-02-26",
      "completion_date": "2028-05",
      "has_results": false,
      "last_update_posted_date": "2025-04-02",
      "last_synced_at": "2026-06-10T18:22:26.810Z",
      "location_count": 1,
      "location_summary": "Bozeman, Montana",
      "locations": [
        {
          "city": "Bozeman",
          "state": "Montana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06546020"
    },
    {
      "nct_id": "NCT07585474",
      "title": "Gut Microbiome Response to Long-Haul Travel in Elite Football Players",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Microbial Composition",
        "Immune Function"
      ],
      "interventions": [
        {
          "name": "Probiotic Capsule",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sheffield Hallam University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "MALE",
        "summary": "18 Years to 40 Years · Male only"
      },
      "enrollment_count": 30,
      "start_date": "2025-07-25",
      "completion_date": "2026-08-15",
      "has_results": false,
      "last_update_posted_date": "2026-05-13",
      "last_synced_at": "2026-06-10T18:22:26.810Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07585474"
    },
    {
      "nct_id": "NCT04088708",
      "title": "Gut Microbe Composition, Exercise, and Breast Breast Cancer Survivors",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer",
        "Gut Microbiome",
        "Exercise",
        "Fatigue"
      ],
      "interventions": [
        {
          "name": "Aerobic Exercise Training",
          "type": "OTHER"
        },
        {
          "name": "Attention Control",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "74 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 74 Years · Female only"
      },
      "enrollment_count": 126,
      "start_date": "2020-01-17",
      "completion_date": "2026-08-31",
      "has_results": false,
      "last_update_posted_date": "2025-09-16",
      "last_synced_at": "2026-06-10T18:22:26.810Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04088708"
    },
    {
      "nct_id": "NCT00066001",
      "title": "Microbial Associations in Periodontal Health and Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Periodontitis",
        "Periodontal Diseases"
      ],
      "interventions": [
        {
          "name": "metronidazole",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The Forsyth Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "35 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "35 Years and older"
      },
      "enrollment_count": 154,
      "start_date": "2002-12",
      "completion_date": "2009-12",
      "has_results": false,
      "last_update_posted_date": "2010-11-09",
      "last_synced_at": "2026-06-10T18:22:26.810Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00066001"
    },
    {
      "nct_id": "NCT07505212",
      "title": "Effects of Gallotannins on the Gut Microbiome and How it Affects Inflammatory Markers Among Obese Individuals.",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity (Disorder)"
      ],
      "interventions": [
        {
          "name": "Gallotannin-rich mango",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Lactiplantibacillus pentosus (probiotic)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "No Treatment Added",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Prairie View A&M University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 20,
      "start_date": "2026-04-14",
      "completion_date": "2026-06",
      "has_results": false,
      "last_update_posted_date": "2026-06-09",
      "last_synced_at": "2026-06-10T18:22:26.810Z",
      "location_count": 1,
      "location_summary": "Prairie View, Texas",
      "locations": [
        {
          "city": "Prairie View",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07505212"
    }
  ]
}