{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Protein+Intake",
    "query": {
      "condition": "Protein Intake"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 68,
    "total_pages": 7,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Protein+Intake&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-04T00:54:16.872Z",
  "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": "NCT02169245",
      "title": "Effects of Protein and Fiber at Breakfast on Appetite, Blood Sugar, and Cholesterol",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Brain Activity",
        "Appetite",
        "Ingestive Behavior",
        "Glucose Control",
        "Cholesterol"
      ],
      "interventions": [
        {
          "name": "Dietary control of protein and fiber intake at breakfast",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Purdue University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "21 Years to 45 Years"
      },
      "enrollment_count": 20,
      "start_date": "2014-03",
      "completion_date": "2015-09",
      "has_results": false,
      "last_update_posted_date": "2016-02-05",
      "last_synced_at": "2026-09-04T00:54:16.872Z",
      "location_count": 2,
      "location_summary": "West Lafayete, Indiana • West Lafayette, Indiana",
      "locations": [
        {
          "city": "West Lafayete",
          "state": "Indiana"
        },
        {
          "city": "West Lafayette",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02169245"
    },
    {
      "nct_id": "NCT04862208",
      "title": "Breakfast Consumption and Energy Balance in Active Adult Males",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Energy Intake",
        "Substrate Utilization",
        "Hormones",
        "Satiety"
      ],
      "interventions": [
        {
          "name": "Maltodextrin supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Whey supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Water",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Ohio University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "MALE",
        "summary": "18 Years to 45 Years · Male only"
      },
      "enrollment_count": 10,
      "start_date": "2021-05-06",
      "completion_date": "2023-05-01",
      "has_results": false,
      "last_update_posted_date": "2023-09-07",
      "last_synced_at": "2026-09-04T00:54:16.872Z",
      "location_count": 1,
      "location_summary": "Athens, Ohio",
      "locations": [
        {
          "city": "Athens",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04862208"
    },
    {
      "nct_id": "NCT02795442",
      "title": "Daily Protein Intake Patterns on Energy Metabolism and the Motivation to Snack",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Even protein",
          "type": "OTHER"
        },
        {
          "name": "Skewed protein",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "USDA Grand Forks Human Nutrition Research Center",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "20 Years to 60 Years"
      },
      "enrollment_count": 53,
      "start_date": "2016-06",
      "completion_date": "2024-02-14",
      "has_results": false,
      "last_update_posted_date": "2025-12-03",
      "last_synced_at": "2026-09-04T00:54:16.872Z",
      "location_count": 1,
      "location_summary": "Grand Forks, North Dakota",
      "locations": [
        {
          "city": "Grand Forks",
          "state": "North Dakota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02795442"
    },
    {
      "nct_id": "NCT02613065",
      "title": "The Role of Protein in Regulating Ad Libitum Energy Intake in Humans",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Energy Balance"
      ],
      "interventions": [
        {
          "name": "Consumption of NOW Foods eggwhite protein shake",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Consumption of NOW Foods maltodextrin shake",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "30 Years to 50 Years"
      },
      "enrollment_count": 48,
      "start_date": "2015-05",
      "completion_date": "2016-06",
      "has_results": false,
      "last_update_posted_date": "2016-08-22",
      "last_synced_at": "2026-09-04T00:54:16.872Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02613065"
    },
    {
      "nct_id": "NCT07167277",
      "title": "The Impact of Whey Protein on Frailty in Older Adults Classified as Pre-frail",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pre-frail",
        "Pre-Frail Older Adults",
        "Cognition",
        "Physical Function",
        "Dietary Intake Assessment",
        "MRI"
      ],
      "interventions": [
        {
          "name": "Whey Protein",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Kansas Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "65 Years to 85 Years"
      },
      "enrollment_count": 20,
      "start_date": "2025-12-05",
      "completion_date": "2026-09",
      "has_results": false,
      "last_update_posted_date": "2026-05-14",
      "last_synced_at": "2026-09-04T00:54:16.872Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07167277"
    },
    {
      "nct_id": "NCT00473031",
      "title": "The Effect of Weight Loss and Dietary Protein Intake on Bone",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Weight Loss",
        "Bone Density"
      ],
      "interventions": [
        {
          "name": "Caloric restriction, high protein",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Caloric restriction; normal protein",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Counseling",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Rutgers University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "70 Years",
        "sex": "FEMALE",
        "summary": "50 Years to 70 Years · Female only"
      },
      "enrollment_count": 60,
      "start_date": "2007-03",
      "completion_date": "2010-06",
      "has_results": false,
      "last_update_posted_date": "2026-05-13",
      "last_synced_at": "2026-09-04T00:54:16.872Z",
      "location_count": 1,
      "location_summary": "New Brunswick, New Jersey",
      "locations": [
        {
          "city": "New Brunswick",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00473031"
    },
    {
      "nct_id": "NCT02211391",
      "title": "Nighttime Protein Intake on Overnight Lipolysis and Morning Fat Oxidation in Obese Men",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Casein Protein",
          "type": "OTHER"
        },
        {
          "name": "Non-caloric placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Florida State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "MALE",
        "summary": "18 Years to 45 Years · Male only"
      },
      "enrollment_count": 12,
      "start_date": "2014-07",
      "completion_date": "2015-08",
      "has_results": false,
      "last_update_posted_date": "2015-08-13",
      "last_synced_at": "2026-09-04T00:54:16.872Z",
      "location_count": 1,
      "location_summary": "Tallahassee, Florida",
      "locations": [
        {
          "city": "Tallahassee",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02211391"
    },
    {
      "nct_id": "NCT03449927",
      "title": "Implementation of a Nutritional Tool During Melphalan Autologous Transplant to Improve Caloric and Protein Intake",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Melphalan Autologous Transplant"
      ],
      "interventions": [
        {
          "name": "Specialized menu",
          "type": "OTHER"
        },
        {
          "name": "Standard of care menu",
          "type": "OTHER"
        },
        {
          "name": "Self report dietary intake worksheet",
          "type": "OTHER"
        },
        {
          "name": "Post study questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2018-01-01",
      "completion_date": "2018-02-27",
      "has_results": false,
      "last_update_posted_date": "2019-03-13",
      "last_synced_at": "2026-09-04T00:54:16.872Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03449927"
    },
    {
      "nct_id": "NCT00508937",
      "title": "Dietary Protein and Insulin Sensitivity Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Insulin Resistance",
        "Type 2 Diabetes",
        "Metabolic Syndrome",
        "Cardiovascular Disease",
        "Dyslipidemia"
      ],
      "interventions": [
        {
          "name": "Diet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "UCSF Benioff Children's Hospital Oakland",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 660,
      "start_date": "2007-02",
      "completion_date": "2009-12",
      "has_results": false,
      "last_update_posted_date": "2020-12-23",
      "last_synced_at": "2026-09-04T00:54:16.872Z",
      "location_count": 2,
      "location_summary": "Berkeley, California • San Francisco, California",
      "locations": [
        {
          "city": "Berkeley",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00508937"
    },
    {
      "nct_id": "NCT01173354",
      "title": "EAA Intake to Optimize Protein Anabolism in COPD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Obstructive Pulmonary Disease"
      ],
      "interventions": [
        {
          "name": "Free balanced amino acid mixture",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Free essential amino acid mixture",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Texas A&M University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "45 Years and older"
      },
      "enrollment_count": 34,
      "start_date": "2009-09-08",
      "completion_date": "2012-02-17",
      "has_results": false,
      "last_update_posted_date": "2025-09-30",
      "last_synced_at": "2026-09-04T00:54:16.872Z",
      "location_count": 1,
      "location_summary": "Little Rock, Arkansas",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01173354"
    }
  ]
}