{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Diet+History+Questionnaire&page=2",
    "query": {
      "intervention": "Diet History Questionnaire",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 37,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Diet+History+Questionnaire&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Diet+History+Questionnaire&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-17T00:24:22.587Z",
  "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": "NCT05732623",
      "title": "Exogenous and Endogenous Risk Factors for Early-onset Colorectal Cancer",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Colorectal Cancer",
        "Early Onset Colorectal Cancer",
        "Diet Habit",
        "Risk Reduction"
      ],
      "interventions": [
        {
          "name": "Semi Quantitative Food Frequency Questionnaire (SQFFQ)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "San Raffaele University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 2300,
      "start_date": "2022-12-05",
      "completion_date": "2035-01",
      "has_results": false,
      "last_update_posted_date": "2026-04-24",
      "last_synced_at": "2026-10-17T00:24:22.587Z",
      "location_count": 2,
      "location_summary": "Denver, Colorado • Chicago, Illinois",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05732623"
    },
    {
      "nct_id": "NCT03043300",
      "title": "A Pilot Study Assessing Intestinal Microbiota Diversification and Changes After Travel to South(East) Asia From the US",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Dysbiosis"
      ],
      "interventions": [
        {
          "name": "Screening Criteria Review",
          "type": "OTHER"
        },
        {
          "name": "Pre-Travel Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Pre-Travel Stool Specimen Collection",
          "type": "OTHER"
        },
        {
          "name": "Short-Term Post-Travel Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Short-Term Post-Travel Stool Specimen Collection",
          "type": "OTHER"
        },
        {
          "name": "Long-Term Post-Travel Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Long-Term Post-Travel Stool Specimen Collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2017-11-07",
      "completion_date": "2018-12-01",
      "has_results": false,
      "last_update_posted_date": "2019-01-30",
      "last_synced_at": "2026-10-17T00:24:22.587Z",
      "location_count": 2,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03043300"
    },
    {
      "nct_id": "NCT02068183",
      "title": "World Trade Center Adolescent Health Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma",
        "Hypertension",
        "Cardiovascular Risk Factor",
        "Insulin Resistance",
        "Stress Disorders, Post-Traumatic",
        "Exposure to Toxic Dust"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "12 Years to 20 Years"
      },
      "enrollment_count": 402,
      "start_date": "2013-12",
      "completion_date": "2016-03",
      "has_results": false,
      "last_update_posted_date": "2017-01-24",
      "last_synced_at": "2026-10-17T00:24:22.587Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02068183"
    },
    {
      "nct_id": "NCT00011713",
      "title": "Environment and Reproductive Health; Human Exposure to Bisphenol A, Phthalates and Fertility and Pregnancy Outcomes",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Infertility"
      ],
      "interventions": [
        {
          "name": "Completion questionnaires/providing biological samples",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "National Institute of Environmental Health Sciences (NIEHS)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 1474,
      "start_date": "1999-10",
      "completion_date": "2020-09",
      "has_results": false,
      "last_update_posted_date": "2020-09-11",
      "last_synced_at": "2026-10-17T00:24:22.587Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00011713"
    },
    {
      "nct_id": "NCT06583408",
      "title": "The REgistry of Very Early Estrogen and AnovuLation",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hypothalamic Amenorrhea, Functional",
        "Hypothalamic Amenorrhea",
        "Functional Hypogonadotropic Hypogonadism"
      ],
      "interventions": [
        {
          "name": "Automated Self-Administered 24-hour Dietary Assessment Tool (ASA24)",
          "type": "OTHER"
        },
        {
          "name": "REVEAL Questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 40 Years · Female only"
      },
      "enrollment_count": 100000,
      "start_date": "2024-07-01",
      "completion_date": "2029-08-01",
      "has_results": false,
      "last_update_posted_date": "2025-11-21",
      "last_synced_at": "2026-10-17T00:24:22.587Z",
      "location_count": 2,
      "location_summary": "Jacksonville, Florida • Rochester, Minnesota",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06583408"
    },
    {
      "nct_id": "NCT06899074",
      "title": "Omega-3 Supplementation for Pediatric Migraine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Migraine"
      ],
      "interventions": [
        {
          "name": "Omega 3 Polyunsaturated Fats",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Matching Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "10 Years to 17 Years"
      },
      "enrollment_count": 57,
      "start_date": "2025-04-17",
      "completion_date": "2026-03-18",
      "has_results": true,
      "last_update_posted_date": "2026-07-02",
      "last_synced_at": "2026-10-17T00:24:22.587Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06899074"
    },
    {
      "nct_id": "NCT03408353",
      "title": "Mammography, Early Detection Biomarkers, Risk Assessment, and Imaging Technologies, MERIT Study",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Carcinoma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Mammography",
          "type": "PROCEDURE"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "80 Years",
        "sex": "FEMALE",
        "summary": "25 Years to 80 Years · Female only"
      },
      "enrollment_count": 10000,
      "start_date": "2017-09-15",
      "completion_date": "2027-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-08-11",
      "last_synced_at": "2026-10-17T00:24:22.587Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03408353"
    },
    {
      "nct_id": "NCT00661882",
      "title": "Pancreatic Cancer Collaborative Registry",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pancreatic Cancer"
      ],
      "interventions": [
        {
          "name": "medical chart review",
          "type": "OTHER"
        },
        {
          "name": "questionnaire administration",
          "type": "OTHER"
        },
        {
          "name": "study of socioeconomic and demographic variables",
          "type": "OTHER"
        },
        {
          "name": "biopsy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "University of Nebraska",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "19 Years to 100 Years"
      },
      "enrollment_count": 379,
      "start_date": "2003-02",
      "completion_date": "2013-09-09",
      "has_results": false,
      "last_update_posted_date": "2023-09-06",
      "last_synced_at": "2026-10-17T00:24:22.587Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00661882"
    },
    {
      "nct_id": "NCT01013129",
      "title": "Studying Genes, Environment, and Prostate Cancer Risk in Patients With or Without Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hereditary Prostate Cancer",
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "DNA analysis",
          "type": "GENETIC"
        },
        {
          "name": "polymorphism analysis",
          "type": "GENETIC"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "medical chart review",
          "type": "OTHER"
        },
        {
          "name": "questionnaire administration",
          "type": "OTHER"
        },
        {
          "name": "evaluation of cancer risk factors",
          "type": "PROCEDURE"
        },
        {
          "name": "study of high risk factors",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "GENETIC",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Portland VA Medical Center",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "120 Years",
        "sex": "MALE",
        "summary": "21 Years to 120 Years · Male only"
      },
      "enrollment_count": 748,
      "start_date": "2008-07",
      "completion_date": "2012-12",
      "has_results": false,
      "last_update_posted_date": "2021-11-11",
      "last_synced_at": "2026-10-17T00:24:22.587Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01013129"
    },
    {
      "nct_id": "NCT05979337",
      "title": "Brief Interventions in Chronic Migraine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Migraine"
      ],
      "interventions": [
        {
          "name": "Empowered Relief",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Health Education (HE)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Treatment as Usual",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 180,
      "start_date": "2023-10-11",
      "completion_date": "2026-08-01",
      "has_results": false,
      "last_update_posted_date": "2026-08-28",
      "last_synced_at": "2026-10-17T00:24:22.587Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05979337"
    }
  ]
}