{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=high+protein+diet",
    "query": {
      "intervention": "high protein diet"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 346,
    "total_pages": 35,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=high+protein+diet&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-16T18:06:48.999Z",
  "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": "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": "2026-09-16T18:06:48.999Z",
      "location_count": 1,
      "location_summary": "Lincoln, Nebraska",
      "locations": [
        {
          "city": "Lincoln",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02945410"
    },
    {
      "nct_id": "NCT03183778",
      "title": "Use of Patiromer to Transition Chronic Kidney Disease Patients With Hyperkalemia to a Plant-rich Diet.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Chronic Kidney Diseases",
        "Hyperkalemia"
      ],
      "interventions": [
        {
          "name": "Patiromer",
          "type": "DRUG"
        },
        {
          "name": "Research Diet Menu",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 3,
      "start_date": "2018-03-12",
      "completion_date": "2019-08-01",
      "has_results": true,
      "last_update_posted_date": "2021-12-01",
      "last_synced_at": "2026-09-16T18:06:48.999Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03183778"
    },
    {
      "nct_id": "NCT05514184",
      "title": "Plant-Focused Nutrition in Patients With Diabetes and Chronic Kidney Disease",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Kidney Disease (CKD) With Diabetes Mellitus (DM)",
        "CKD Stage 3",
        "CKD Stage 4",
        "CKD Stage 5",
        "Diabetes Mellitus",
        "Diabetic Kidney Disease"
      ],
      "interventions": [
        {
          "name": "PLAFOND diet",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "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": 120,
      "start_date": "2023-10-01",
      "completion_date": "2026-09-30",
      "has_results": false,
      "last_update_posted_date": "2024-07-03",
      "last_synced_at": "2026-09-16T18:06:48.999Z",
      "location_count": 2,
      "location_summary": "Orange, California • Torrance, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05514184"
    },
    {
      "nct_id": "NCT04097171",
      "title": "The Effect of Diet Composition on Performance, Expenditure, Blood Lipids, and Appetite Hormones in Highly Trained Cyclists",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Endurance Cycling Performance"
      ],
      "interventions": [
        {
          "name": "Diet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Texas Christian 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": 34,
      "start_date": "2019-11-11",
      "completion_date": "2020-03-30",
      "has_results": false,
      "last_update_posted_date": "2021-10-05",
      "last_synced_at": "2026-09-16T18:06:48.999Z",
      "location_count": 1,
      "location_summary": "Fort Worth, Texas",
      "locations": [
        {
          "city": "Fort Worth",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04097171"
    },
    {
      "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": "2026-09-16T18:06:48.999Z",
      "location_count": 1,
      "location_summary": "Orange, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01423266"
    },
    {
      "nct_id": "NCT04138303",
      "title": "Exercise and Nutrition on Obese Microbiome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Overweight and Obesity"
      ],
      "interventions": [
        {
          "name": "Exercise Protocol",
          "type": "OTHER"
        },
        {
          "name": "Calorie-Restrictive Low Carbohydrate Diet (CR-LC)",
          "type": "OTHER"
        },
        {
          "name": "Ancestral Diet (AD)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 31,
      "start_date": "2019-10-21",
      "completion_date": "2019-12-21",
      "has_results": false,
      "last_update_posted_date": "2020-01-07",
      "last_synced_at": "2026-09-16T18:06:48.999Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04138303"
    },
    {
      "nct_id": "NCT05550818",
      "title": "Young Adult Eating Habits",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Eating Behavior",
        "Eating Habit"
      ],
      "interventions": [
        {
          "name": "High Ultra Processed Food Diet",
          "type": "OTHER"
        },
        {
          "name": "No Ultra Processed Food Diet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Virginia Polytechnic Institute and State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "25 Years",
        "sex": "ALL",
        "summary": "18 Years to 25 Years"
      },
      "enrollment_count": 36,
      "start_date": "2023-03-10",
      "completion_date": "2025-06-10",
      "has_results": true,
      "last_update_posted_date": "2026-09-08",
      "last_synced_at": "2026-09-16T18:06:48.999Z",
      "location_count": 2,
      "location_summary": "Blacksburg, Virginia • Roanoke, Virginia",
      "locations": [
        {
          "city": "Blacksburg",
          "state": "Virginia"
        },
        {
          "city": "Roanoke",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05550818"
    },
    {
      "nct_id": "NCT00937638",
      "title": "Beef in an Optimal Lean Diet (BOLD) Effects on Metabolic Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Metabolic Syndrome",
        "Cardiovascular Disease"
      ],
      "interventions": [
        {
          "name": "BOLD Diet",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "BOLD-X Diet",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Modified DASH Diet",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Penn State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "30 Years to 60 Years"
      },
      "enrollment_count": 63,
      "start_date": "2009-02",
      "completion_date": "2012-03",
      "has_results": false,
      "last_update_posted_date": "2023-08-21",
      "last_synced_at": "2026-09-16T18:06:48.999Z",
      "location_count": 1,
      "location_summary": "University Park, Pennsylvania",
      "locations": [
        {
          "city": "University Park",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00937638"
    },
    {
      "nct_id": "NCT03487679",
      "title": "Effects of Prolonged Fasting on Microbiome and HDL",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fasting"
      ],
      "interventions": [
        {
          "name": "Fasting",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, Davis",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "20 Years to 80 Years"
      },
      "enrollment_count": 21,
      "start_date": "2018-04-09",
      "completion_date": "2018-05-30",
      "has_results": false,
      "last_update_posted_date": "2018-09-27",
      "last_synced_at": "2026-09-16T18:06:48.999Z",
      "location_count": 1,
      "location_summary": "Davis, California",
      "locations": [
        {
          "city": "Davis",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03487679"
    },
    {
      "nct_id": "NCT06221852",
      "title": "Ketogenic and Nutritional Interventions for First Episode Bipolar Disorder",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Bipolar I Disorder",
        "Psychosis",
        "Schizoaffective Disorder"
      ],
      "interventions": [
        {
          "name": "Ketogenic diet",
          "type": "OTHER"
        },
        {
          "name": "Dietary Guidelines for Americans",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mclean Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 50,
      "start_date": "2024-03-12",
      "completion_date": "2027-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-08-17",
      "last_synced_at": "2026-09-16T18:06:48.999Z",
      "location_count": 1,
      "location_summary": "Belmont, Massachusetts",
      "locations": [
        {
          "city": "Belmont",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06221852"
    }
  ]
}