{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Food+Frequency+Questionnaire&page=2",
    "query": {
      "intervention": "Food Frequency Questionnaire",
      "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=Food+Frequency+Questionnaire&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T00:29:22.844Z",
  "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": "NCT01396343",
      "title": "Environmental and Genetic Risk Factors for Pediatric Multiple Sclerosis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pediatric Multiple Sclerosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "3 Years to 21 Years"
      },
      "enrollment_count": 1276,
      "start_date": "2011-10",
      "completion_date": "2018-04",
      "has_results": false,
      "last_update_posted_date": "2018-10-18",
      "last_synced_at": "2026-09-25T00:29:22.844Z",
      "location_count": 17,
      "location_summary": "Birmingham, Alabama • San Bernardino, California • San Francisco, California + 13 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "San Bernardino",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01396343"
    },
    {
      "nct_id": "NCT06919536",
      "title": "Controlled Feeding With 24 Hour Recall",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Evaluate Accuracy 24 Dietary Recall"
      ],
      "interventions": [
        {
          "name": "No intervention (observational study)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Texas Tech University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 75,
      "start_date": "2025-04-21",
      "completion_date": "2025-09-22",
      "has_results": false,
      "last_update_posted_date": "2025-11-18",
      "last_synced_at": "2026-09-25T00:29:22.844Z",
      "location_count": 1,
      "location_summary": "Lubbock, Texas",
      "locations": [
        {
          "city": "Lubbock",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06919536"
    },
    {
      "nct_id": "NCT04132739",
      "title": "Piloting Diet and Exercise Interventions in Older Hispanics With Diabetes",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetes",
        "Senior Syndrome",
        "Frailty"
      ],
      "interventions": [
        {
          "name": "Diet",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Exercise",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Diet and exercise",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Florida International University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 39,
      "start_date": "2019-03-01",
      "completion_date": "2020-03-30",
      "has_results": false,
      "last_update_posted_date": "2021-01-06",
      "last_synced_at": "2026-09-25T00:29:22.844Z",
      "location_count": 4,
      "location_summary": "Miami, Florida • Sweetwater, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Sweetwater",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04132739"
    },
    {
      "nct_id": "NCT05639556",
      "title": "Strength and Muscle Related Outcomes for Nutrition and Lung Function in CF",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cystic Fibrosis"
      ],
      "interventions": [
        {
          "name": "BMI and lean mass index from DXA",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Anthropometric Measurements",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Hand-grip strength",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Six-minute walk Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Sit-to-Stand Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Short physical performance battery (SPPB)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "BIA Sub-study",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Accelerometry to assess physical activity",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Gastrointestinal (GI) and nutrition questionnaires:",
          "type": "OTHER"
        },
        {
          "name": "Psychosocial questionnaire: PHQ-8",
          "type": "OTHER"
        },
        {
          "name": "Psychosocial questionnaire: GAD-7",
          "type": "OTHER"
        },
        {
          "name": "Psychosocial questionnaire: The Treatment Self-Regulation Questionnaire (TSRQ)",
          "type": "OTHER"
        },
        {
          "name": "Psychosocial questionnaire: CF Fatalism Scale",
          "type": "OTHER"
        },
        {
          "name": "Psychosocial questionnaire: Body Esteem Scale for Adolescents and Adults (BESAA)",
          "type": "OTHER"
        },
        {
          "name": "12-month Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Oral glucose tolerance testing (OGTT)",
          "type": "OTHER"
        },
        {
          "name": "Continuous glucose monitoring (CGM)",
          "type": "DEVICE"
        },
        {
          "name": "Chest CT scans (When available within the past 6 months in medical records)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Hologic Dual X-Ray Absorptiometry (DXA)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Ultrasound Sub-study of assessment of appendage muscles using ultrasound",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Psychosocial questionnaire: Hunger Vital Sign questionnaire",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Respiratory symptom questionnaire: CRISS",
          "type": "OTHER"
        },
        {
          "name": "Spirometry",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Psychosocial questionnaire: Additional Health Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "CF Management Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Food Frequency Questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER",
        "DEVICE"
      ],
      "sponsor": "Jaeb Center for Health Research",
      "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": "2023-04-20",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2026-03-13",
      "last_synced_at": "2026-09-25T00:29:22.844Z",
      "location_count": 23,
      "location_summary": "Tucson, Arizona • Little Rock, Arkansas • Atlanta, Georgia + 19 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05639556"
    },
    {
      "nct_id": "NCT05337150",
      "title": "Remotely Delivered Behavioral Weight Loss Using an Ad Libitum Plant-Based Diet Versus a Balanced Calorie Deficit Diet",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Overweight"
      ],
      "interventions": [
        {
          "name": "Lifestyle Modification Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Balanced Calorie Deficit Eating Plan",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Ad Libitum Whole Food Plant-Based Eating Plan",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Drexel University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 55,
      "start_date": "2022-05-29",
      "completion_date": "2023-03-24",
      "has_results": false,
      "last_update_posted_date": "2023-09-14",
      "last_synced_at": "2026-09-25T00:29:22.844Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05337150"
    },
    {
      "nct_id": "NCT00874380",
      "title": "Fiber Intake in an End Stage Renal Disease (ESRD) Population Followed Over 2 Years",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiovascular Outcome",
        "Kalemia Control",
        "Lipid Profile"
      ],
      "interventions": [
        {
          "name": "Increasing total fiber intake in patient's diet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Northwell Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 70,
      "start_date": "2008-10",
      "completion_date": "2011-06",
      "has_results": false,
      "last_update_posted_date": "2013-05-15",
      "last_synced_at": "2026-09-25T00:29:22.844Z",
      "location_count": 1,
      "location_summary": "Staten Island, New York",
      "locations": [
        {
          "city": "Staten Island",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00874380"
    },
    {
      "nct_id": "NCT04253938",
      "title": "Evaluation of Feeding Practices in Latin American Infants at a Medical Home in Austin, Texas",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Feeding Behavior"
      ],
      "interventions": [
        {
          "name": "Education",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Texas at Austin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "1 Week",
        "maximum_age": "12 Months",
        "sex": "ALL",
        "summary": "1 Week to 12 Months"
      },
      "enrollment_count": 200,
      "start_date": "2019-12-15",
      "completion_date": "2021-06-01",
      "has_results": false,
      "last_update_posted_date": "2020-02-05",
      "last_synced_at": "2026-09-25T00:29:22.844Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04253938"
    },
    {
      "nct_id": "NCT07265648",
      "title": "Assessing Diet, Stress Scores, and Other Health Metrics in Healthy Northern California Adults",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Stress",
        "Stool Frequency",
        "Food Allergies",
        "Diet Surveys",
        "Demographic Data"
      ],
      "interventions": [
        {
          "name": "Online Survey",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "USDA, Western Human Nutrition Research Center",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 300,
      "start_date": "2025-12-08",
      "completion_date": "2026-01-20",
      "has_results": false,
      "last_update_posted_date": "2026-01-29",
      "last_synced_at": "2026-09-25T00:29:22.844Z",
      "location_count": 1,
      "location_summary": "Davis, California",
      "locations": [
        {
          "city": "Davis",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07265648"
    },
    {
      "nct_id": "NCT04605640",
      "title": "Individualized Diet Improvement Program for Weight Loss and Maintenance, Cohort 2",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Overweight",
        "Weight Loss",
        "Diet Habit"
      ],
      "interventions": [
        {
          "name": "Weight Management Intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Illinois at Urbana-Champaign",
      "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": 30,
      "start_date": "2019-03-26",
      "completion_date": "2021-04-10",
      "has_results": false,
      "last_update_posted_date": "2021-07-23",
      "last_synced_at": "2026-09-25T00:29:22.844Z",
      "location_count": 1,
      "location_summary": "Urbana, Illinois",
      "locations": [
        {
          "city": "Urbana",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04605640"
    },
    {
      "nct_id": "NCT06337552",
      "title": "High-Fermented Food Intervention Among Locally Advanced Rectal Cancer Patients (The FEED Trial)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Rectal Cancer",
        "Non-Small Cell Lung Cancer"
      ],
      "interventions": [
        {
          "name": "FEED-FF",
          "type": "OTHER"
        },
        {
          "name": "Standard of Care (SUC)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "H. Lee Moffitt Cancer Center and Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 39,
      "start_date": "2024-04-04",
      "completion_date": "2027-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-23",
      "last_synced_at": "2026-09-25T00:29:22.844Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06337552"
    }
  ]
}