{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Protein+Restriction",
    "query": {
      "condition": "Protein Restriction"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 16,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Protein+Restriction&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-27T02:35:09.732Z",
  "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": "NCT04000750",
      "title": "Time-Restricted Eating and Muscle Hypertrophy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Muscle Hypertrophy",
        "Healthy and Well-Trained Men and Women"
      ],
      "interventions": [
        {
          "name": "Time Restricted Eating",
          "type": "OTHER"
        },
        {
          "name": "Normal Feeding",
          "type": "OTHER"
        },
        {
          "name": "Resistance Training",
          "type": "OTHER"
        },
        {
          "name": "Whey Protein",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "California State University, Fullerton",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 20,
      "start_date": "2019-06-24",
      "completion_date": "2023-02-05",
      "has_results": false,
      "last_update_posted_date": "2023-02-09",
      "last_synced_at": "2026-06-27T02:35:09.732Z",
      "location_count": 1,
      "location_summary": "Fullerton, California",
      "locations": [
        {
          "city": "Fullerton",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04000750"
    },
    {
      "nct_id": "NCT00072085",
      "title": "Immunization With gp100 Protein Vaccine in Treating Patients With Metastatic Melanoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Melanoma (Skin)"
      ],
      "interventions": [
        {
          "name": "aldesleukin",
          "type": "BIOLOGICAL"
        },
        {
          "name": "gp100 antigen",
          "type": "BIOLOGICAL"
        },
        {
          "name": "incomplete Freund's adjuvant",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": null,
      "start_date": "2003-09",
      "completion_date": "2006-07",
      "has_results": false,
      "last_update_posted_date": "2013-06-19",
      "last_synced_at": "2026-06-27T02:35:09.732Z",
      "location_count": 2,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        },
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00072085"
    },
    {
      "nct_id": "NCT02353637",
      "title": "The Peds Obesity Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pediatric Obesity"
      ],
      "interventions": [
        {
          "name": "Partial Meal Replacements",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "12 Years to 17 Years"
      },
      "enrollment_count": 12,
      "start_date": "2014-11",
      "completion_date": "2018-02-22",
      "has_results": false,
      "last_update_posted_date": "2018-06-19",
      "last_synced_at": "2026-06-27T02:35:09.732Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02353637"
    },
    {
      "nct_id": "NCT01692587",
      "title": "Does Protein Restriction Inhibit Prostrate Cancer Growth",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Protein restrictive diet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "MALE",
        "summary": "Male only"
      },
      "enrollment_count": 65,
      "start_date": "2011-01",
      "completion_date": "2015-03",
      "has_results": false,
      "last_update_posted_date": "2021-03-26",
      "last_synced_at": "2026-06-27T02:35:09.732Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01692587"
    },
    {
      "nct_id": "NCT00955903",
      "title": "Calorie Restriction and Changes in Body Composition, Disease, Function, and Quality of Life in Older Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Obesity",
        "Diabetes",
        "Hypertension",
        "Hyperlipidemia"
      ],
      "interventions": [
        {
          "name": "Exercise",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Reduced Calorie Diet",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Weight Maintenance Diet",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 167,
      "start_date": "2010-06",
      "completion_date": "2014-08",
      "has_results": true,
      "last_update_posted_date": "2017-09-05",
      "last_synced_at": "2026-06-27T02:35:09.732Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00955903"
    },
    {
      "nct_id": "NCT05359848",
      "title": "A Pilot, Feasibility Study of Intermittent Caloric Restriction Plus Plant-based Diet in Cancer Patients Receiving Chemotherapy",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Medical Oncology",
        "Integrative Oncology",
        "Medical Nutrition Therapy"
      ],
      "interventions": [
        {
          "name": "Diet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "State University of New York at Buffalo",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2022-04-15",
      "completion_date": "2027-06-01",
      "has_results": false,
      "last_update_posted_date": "2026-02-20",
      "last_synced_at": "2026-06-27T02:35:09.732Z",
      "location_count": 2,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        },
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05359848"
    },
    {
      "nct_id": "NCT02945410",
      "title": "Effect of Caloric Restriction and Protein Intake on Metabolism and Anabolic Sensitivity",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Weight Loss",
        "Starvation"
      ],
      "interventions": [
        {
          "name": "Caloric Restriction",
          "type": "OTHER"
        },
        {
          "name": "Protein",
          "type": "OTHER"
        },
        {
          "name": "Exercise",
          "type": "OTHER"
        },
        {
          "name": "Calcium and Vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Maltodextrin",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Nebraska Lincoln",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "30 Years",
        "sex": "MALE",
        "summary": "19 Years to 30 Years · Male only"
      },
      "enrollment_count": 20,
      "start_date": "2016-09",
      "completion_date": "2019-02",
      "has_results": true,
      "last_update_posted_date": "2019-12-19",
      "last_synced_at": "2026-06-27T02:35:09.732Z",
      "location_count": 1,
      "location_summary": "Lincoln, Nebraska",
      "locations": [
        {
          "city": "Lincoln",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02945410"
    },
    {
      "nct_id": "NCT05610644",
      "title": "Impact of Time Restricted Feeding on Daily Protein Requirements",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Nutrition Disorders in Old Age"
      ],
      "interventions": [
        {
          "name": "isocaloric, isonitrogenous meals",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Arkansas",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "50 Years to 75 Years"
      },
      "enrollment_count": 61,
      "start_date": "2023-03-29",
      "completion_date": "2024-10-03",
      "has_results": false,
      "last_update_posted_date": "2024-12-20",
      "last_synced_at": "2026-06-27T02:35:09.732Z",
      "location_count": 1,
      "location_summary": "Little Rock, Arkansas",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05610644"
    },
    {
      "nct_id": "NCT00635739",
      "title": "Effect of Whey Protein Supplementation and Resistance Exercise on Muscle Parameters in Older Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Mobility Limitation"
      ],
      "interventions": [
        {
          "name": "Whey protein",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Maltodextrin placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Tufts University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "70 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "70 Years to 85 Years"
      },
      "enrollment_count": 80,
      "start_date": "2008-04",
      "completion_date": "2011-05",
      "has_results": true,
      "last_update_posted_date": "2019-03-18",
      "last_synced_at": "2026-06-27T02:35:09.732Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00635739"
    },
    {
      "nct_id": "NCT03995979",
      "title": "Inflammation and Protein Restriction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Protein Restriction",
        "Diet",
        "Inflammation"
      ],
      "interventions": [
        {
          "name": "4 Day Protein Restricted Diet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Florida",
      "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": 12,
      "start_date": "2019-09-09",
      "completion_date": "2024-02-16",
      "has_results": true,
      "last_update_posted_date": "2024-12-24",
      "last_synced_at": "2026-06-27T02:35:09.732Z",
      "location_count": 2,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03995979"
    }
  ]
}