{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dietary+energy+restriction",
    "query": {
      "intervention": "Dietary energy restriction"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 189,
    "total_pages": 19,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dietary+energy+restriction&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-27T18:23:00.468Z",
  "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": "NCT01636635",
      "title": "Effect of Age and Weight Loss on Inflammation and Iron Homeostasis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Aging"
      ],
      "interventions": [
        {
          "name": "Calorie Restriction",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Tufts University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 44,
      "start_date": "2011-03",
      "completion_date": "2013-11",
      "has_results": false,
      "last_update_posted_date": "2015-11-16",
      "last_synced_at": "2026-09-27T18:23:00.468Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01636635"
    },
    {
      "nct_id": "NCT02762708",
      "title": "The Effect of Bariatric Surgery on Metabolism, the Metabolome and Microbiome in Patients With Type 2 Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Type 2 Diabetes Mellitus",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Roux-en-Y Gastric Bypass (RYGB)",
          "type": "PROCEDURE"
        },
        {
          "name": "Caloric Restriction",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Exendin-9,39",
          "type": "DRUG"
        },
        {
          "name": "Normal Saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "BEHAVIORAL",
        "DRUG"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "20 Years to 65 Years"
      },
      "enrollment_count": 12,
      "start_date": "2016-03",
      "completion_date": "2018-01-06",
      "has_results": true,
      "last_update_posted_date": "2022-05-03",
      "last_synced_at": "2026-09-27T18:23:00.468Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02762708"
    },
    {
      "nct_id": "NCT03091725",
      "title": "Postprandial Nutrient Homeostasis Before and After Weight Loss Induced by Low-calorie Diet or RYGB",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Roux-en-Y gastric bypass surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "Low-calorie diet",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "BEHAVIORAL"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "25 Years to 65 Years"
      },
      "enrollment_count": 30,
      "start_date": "2017-04-25",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-08-25",
      "last_synced_at": "2026-09-27T18:23:00.468Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03091725"
    },
    {
      "nct_id": "NCT05031663",
      "title": "Effect of Almonds on Immune Strength and Response to Flu Vaccination in Overweight Older Men and Postmenopausal Women: A Randomized Controlled Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Immune Response",
        "Inflammation"
      ],
      "interventions": [
        {
          "name": "Almond group",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Control Group",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Loma Linda University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "40 Years to 70 Years"
      },
      "enrollment_count": 61,
      "start_date": "2021-08-12",
      "completion_date": "2023-05-10",
      "has_results": false,
      "last_update_posted_date": "2025-12-09",
      "last_synced_at": "2026-09-27T18:23:00.468Z",
      "location_count": 1,
      "location_summary": "Loma Linda, California",
      "locations": [
        {
          "city": "Loma Linda",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05031663"
    },
    {
      "nct_id": "NCT03967912",
      "title": "MOVE UP Lifestyle Intervention for Caregivers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Body Weight",
        "Healthy Diet",
        "Physical Activity",
        "Health Behavior",
        "Healthy Aging"
      ],
      "interventions": [
        {
          "name": "MOVE UP",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pittsburgh",
      "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": 5,
      "start_date": "2019-11-15",
      "completion_date": "2020-02-15",
      "has_results": false,
      "last_update_posted_date": "2021-12-02",
      "last_synced_at": "2026-09-27T18:23:00.468Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03967912"
    },
    {
      "nct_id": "NCT02525419",
      "title": "Intermittent Fasting, Caloric Restriction and Body Composition in Obese Men and Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Weight Loss"
      ],
      "interventions": [
        {
          "name": "Weight Loss Phase",
          "type": "BEHAVIORAL"
        },
        {
          "name": "HP-IF",
          "type": "BEHAVIORAL"
        },
        {
          "name": "HH",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Skidmore College",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "30 Years to 65 Years"
      },
      "enrollment_count": 43,
      "start_date": "2013-08",
      "completion_date": "2015-03",
      "has_results": false,
      "last_update_posted_date": "2015-08-24",
      "last_synced_at": "2026-09-27T18:23:00.468Z",
      "location_count": 1,
      "location_summary": "Saratoga Springs, New York",
      "locations": [
        {
          "city": "Saratoga Springs",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02525419"
    },
    {
      "nct_id": "NCT06998238",
      "title": "Evaluating the Influence of Diet-induced Weight Loss on Fat (Adipose) Tissue's Insulin Sensitivity and Testosterone Synthesis in Women With Overweight or Obesity, Insulin Resistance, and Hyperandrogenemia",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Overweight and Obesity",
        "Hyperandrogenemia",
        "Insulin Resistance"
      ],
      "interventions": [
        {
          "name": "Mediterranean-based, carbohydrate restricted, calorie reduced diet",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Missouri-Columbia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "21 Years to 45 Years · Female only"
      },
      "enrollment_count": 8,
      "start_date": "2024-01-07",
      "completion_date": "2026-04-01",
      "has_results": false,
      "last_update_posted_date": "2026-03-17",
      "last_synced_at": "2026-09-27T18:23:00.468Z",
      "location_count": 1,
      "location_summary": "Columbia, Missouri",
      "locations": [
        {
          "city": "Columbia",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06998238"
    },
    {
      "nct_id": "NCT04145466",
      "title": "The Personalized Nutrition Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Weight Loss"
      ],
      "interventions": [
        {
          "name": "High-fat diet",
          "type": "BEHAVIORAL"
        },
        {
          "name": "High-carbohydrate diet",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Pennington Biomedical Research Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 145,
      "start_date": "2020-02-27",
      "completion_date": "2023-12-30",
      "has_results": true,
      "last_update_posted_date": "2025-01-30",
      "last_synced_at": "2026-09-27T18:23:00.468Z",
      "location_count": 1,
      "location_summary": "Baton Rouge, Louisiana",
      "locations": [
        {
          "city": "Baton Rouge",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04145466"
    },
    {
      "nct_id": "NCT07524244",
      "title": "Ketogenic and Carnivore (Lion) Diets for Inflammatory Bowel Disease and Rheumatoid Arthritis",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Rheumatoid Arthritis (RA)",
        "Crohn's Disease (CD)",
        "Ulcerative Colitis (UC)"
      ],
      "interventions": [
        {
          "name": "Ketogenic diet",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Carnivore (Lion) Diet",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Fuller Research Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 160,
      "start_date": "2026-02-17",
      "completion_date": "2027-09",
      "has_results": false,
      "last_update_posted_date": "2026-04-16",
      "last_synced_at": "2026-09-27T18:23:00.468Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07524244"
    },
    {
      "nct_id": "NCT00143936",
      "title": "The Safety and Efficacy of Low and High Carbohydrate Diets",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Low- Carbohydrate -Atkins Diet",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Low Calorie Diet",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Temple 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": 360,
      "start_date": "2003-04",
      "completion_date": "2009-02",
      "has_results": false,
      "last_update_posted_date": "2010-01-15",
      "last_synced_at": "2026-09-27T18:23:00.468Z",
      "location_count": 3,
      "location_summary": "Denver, Colorado • St Louis, Missouri • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00143936"
    }
  ]
}