{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=4+Day+Protein+Restricted+Diet",
    "query": {
      "intervention": "4 Day Protein Restricted Diet"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 35,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=4+Day+Protein+Restricted+Diet&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-24T01:41:00.193Z",
  "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": "NCT05457881",
      "title": "Short-Term Endogenous Hydrogen Sulfide Upregulation For Vein Graft Disease",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vascular Diseases",
        "Surgery"
      ],
      "interventions": [
        {
          "name": "Scandi-Shake",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2024-03-01",
      "completion_date": "2029-12-01",
      "has_results": false,
      "last_update_posted_date": "2025-09-18",
      "last_synced_at": "2026-09-24T01:41:00.193Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05457881"
    },
    {
      "nct_id": "NCT01423266",
      "title": "Effects of a High Protein Diet on Clinical Outcomes in Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure",
        "Diabetes Mellitus"
      ],
      "interventions": [
        {
          "name": "12-week supervised weight loss intervention",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of California, Irvine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 78,
      "start_date": "2009-12",
      "completion_date": "2015-12",
      "has_results": false,
      "last_update_posted_date": "2016-05-23",
      "last_synced_at": "2026-09-24T01:41:00.193Z",
      "location_count": 1,
      "location_summary": "Orange, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01423266"
    },
    {
      "nct_id": "NCT07009288",
      "title": "A Study of Time-Restricted Eating in Childhood Cancer Survivors",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Childhood Cancer Survivors"
      ],
      "interventions": [
        {
          "name": "Children's Oncology Group Heart Health Link",
          "type": "OTHER"
        },
        {
          "name": "Monthly weights",
          "type": "OTHER"
        },
        {
          "name": "Fasting",
          "type": "OTHER"
        },
        {
          "name": "Calls",
          "type": "OTHER"
        },
        {
          "name": "Participant Questionnaires",
          "type": "OTHER"
        },
        {
          "name": "Dried blood spot",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "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": "2025-05-27",
      "completion_date": "2031-05-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-03",
      "last_synced_at": "2026-09-24T01:41:00.193Z",
      "location_count": 4,
      "location_summary": "New York, New York • Memphis, Tennessee • Seattle, Washington",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07009288"
    },
    {
      "nct_id": "NCT00872378",
      "title": "The Effects of Exenatide After Gastric Restriction",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Morbid Obesity"
      ],
      "interventions": [
        {
          "name": "Exenatide",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Advanced Specialty Care",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 28,
      "start_date": "2009-02",
      "completion_date": "2010-12",
      "has_results": false,
      "last_update_posted_date": "2009-03-31",
      "last_synced_at": "2026-09-24T01:41:00.193Z",
      "location_count": 2,
      "location_summary": "Bend, Oregon",
      "locations": [
        {
          "city": "Bend",
          "state": "Oregon"
        },
        {
          "city": "Bend",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00872378"
    },
    {
      "nct_id": "NCT02124759",
      "title": "Mechanism of Microbiome-induced Insulin Resistance in Humans (Aim 1)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Insulin Sensitivity"
      ],
      "interventions": [
        {
          "name": "Sevelamer",
          "type": "DRUG"
        },
        {
          "name": "Synbiotic",
          "type": "DRUG"
        },
        {
          "name": "Maltodextrin",
          "type": "DRUG"
        },
        {
          "name": "High Fat diet",
          "type": "OTHER"
        },
        {
          "name": "Low Fat diet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "The University of Texas Health Science Center at San Antonio",
      "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": 20,
      "start_date": "2014-04-02",
      "completion_date": "2020-03-30",
      "has_results": true,
      "last_update_posted_date": "2021-10-15",
      "last_synced_at": "2026-09-24T01:41:00.193Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02124759"
    },
    {
      "nct_id": "NCT05113485",
      "title": "UCLA Breast Cancer Survivor Health Promotion Research Study",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Diabetes Prevention Program-based lifestyle change intervention (DPP)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Highly Microbiota-Accessible Foods (HMAFs) intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "75 Years",
        "sex": "FEMALE",
        "summary": "50 Years to 75 Years · Female only"
      },
      "enrollment_count": 30,
      "start_date": "2022-04-01",
      "completion_date": "2023-06",
      "has_results": false,
      "last_update_posted_date": "2022-04-11",
      "last_synced_at": "2026-09-24T01:41:00.193Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05113485"
    },
    {
      "nct_id": "NCT04675775",
      "title": "The BRAINFOOD Trial to Prevent Recurrent Hepatic Encephalopathy.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cirrhosis",
        "Ascites",
        "Liver Diseases",
        "Frailty",
        "Sarcopenia",
        "Hepatic Encephalopathy"
      ],
      "interventions": [
        {
          "name": "Medically-tailored meals (MTM)",
          "type": "OTHER"
        },
        {
          "name": "Protein supplements",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Nutrition education handout",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIETARY_SUPPLEMENT",
        "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": 17,
      "start_date": "2021-01-21",
      "completion_date": "2023-03-05",
      "has_results": true,
      "last_update_posted_date": "2024-03-06",
      "last_synced_at": "2026-09-24T01:41:00.193Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04675775"
    },
    {
      "nct_id": "NCT02706288",
      "title": "Effects of a Calorie Restricted, Very Low Fat Plant-based Diet and Multi-component Exercise Program on Metabolic Health",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Insulin Resistance"
      ],
      "interventions": [
        {
          "name": "Weight loss with very low fat plant-based diet and regular exercise",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Washington University School of Medicine",
      "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": 8,
      "start_date": "2016-03",
      "completion_date": "2022-12",
      "has_results": false,
      "last_update_posted_date": "2022-12-08",
      "last_synced_at": "2026-09-24T01:41:00.193Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02706288"
    },
    {
      "nct_id": "NCT04933448",
      "title": "Ketogenic Diet Following Moderate to Severe Pediatric Traumatic Brain Injury",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Traumatic Brain Injury"
      ],
      "interventions": [
        {
          "name": "Ketogenic Diet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Gillette Children's Specialty Healthcare",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "2 Years to 17 Years"
      },
      "enrollment_count": 7,
      "start_date": "2022-05-16",
      "completion_date": "2024-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-02-12",
      "last_synced_at": "2026-09-24T01:41:00.193Z",
      "location_count": 2,
      "location_summary": "Minneapolis, Minnesota • Saint Paul, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Saint Paul",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04933448"
    },
    {
      "nct_id": "NCT03255031",
      "title": "Ketogenic Diet (KD) in Alcoholism",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Alcoholism"
      ],
      "interventions": [
        {
          "name": "Ketogenic Diet (KD)",
          "type": "OTHER"
        },
        {
          "name": "Standard American (SA) Meals and Shakes",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "National Institute on Alcohol Abuse and Alcoholism (NIAAA)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 53,
      "start_date": "2017-10-24",
      "completion_date": "2023-02-07",
      "has_results": true,
      "last_update_posted_date": "2024-07-17",
      "last_synced_at": "2026-09-24T01:41:00.193Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03255031"
    }
  ]
}