{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Meal+portion+size",
    "query": {
      "intervention": "Meal portion size"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 51,
    "total_pages": 6,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Meal+portion+size&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-05T03:29:08.166Z",
  "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": "NCT02942589",
      "title": "Effect of Portion-control Training on Food Intake",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Feeding Behaviors"
      ],
      "interventions": [
        {
          "name": "Meal portion size",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Penn State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "66 Years",
        "sex": "FEMALE",
        "summary": "20 Years to 66 Years · Female only"
      },
      "enrollment_count": 105,
      "start_date": "2014-02",
      "completion_date": "2015-05",
      "has_results": false,
      "last_update_posted_date": "2016-10-24",
      "last_synced_at": "2026-09-05T03:29:08.166Z",
      "location_count": 1,
      "location_summary": "University Park, Pennsylvania",
      "locations": [
        {
          "city": "University Park",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02942589"
    },
    {
      "nct_id": "NCT05152693",
      "title": "Effects of Variety and Portion Size on Meal Intake of Adults",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Eating Behavior"
      ],
      "interventions": [
        {
          "name": "Low variety",
          "type": "OTHER"
        },
        {
          "name": "High Variety",
          "type": "OTHER"
        },
        {
          "name": "Small Portion Size",
          "type": "OTHER"
        },
        {
          "name": "Large Portion Size",
          "type": "OTHER"
        },
        {
          "name": "With Beverage",
          "type": "OTHER"
        },
        {
          "name": "Without Beverage",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Penn State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "20 Years to 65 Years · Female only"
      },
      "enrollment_count": 0,
      "start_date": "2022-01-20",
      "completion_date": "2023-01-27",
      "has_results": false,
      "last_update_posted_date": "2021-12-10",
      "last_synced_at": "2026-09-05T03:29:08.166Z",
      "location_count": 1,
      "location_summary": "University Park, Pennsylvania",
      "locations": [
        {
          "city": "University Park",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05152693"
    },
    {
      "nct_id": "NCT05177367",
      "title": "Combined Effects of Variety and Portion Size on Meal Intake of Women",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Eating Behavior"
      ],
      "interventions": [
        {
          "name": "Sequential Variety",
          "type": "OTHER"
        },
        {
          "name": "Simultaneous Variety",
          "type": "OTHER"
        },
        {
          "name": "Single Food",
          "type": "OTHER"
        },
        {
          "name": "Small portion",
          "type": "OTHER"
        },
        {
          "name": "Large Portion",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Penn State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "20 Years to 65 Years · Female only"
      },
      "enrollment_count": 0,
      "start_date": "2022-02-20",
      "completion_date": "2023-01-27",
      "has_results": false,
      "last_update_posted_date": "2022-03-04",
      "last_synced_at": "2026-09-05T03:29:08.166Z",
      "location_count": 1,
      "location_summary": "University Park, Pennsylvania",
      "locations": [
        {
          "city": "University Park",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05177367"
    },
    {
      "nct_id": "NCT04802291",
      "title": "HomeStyles-2: Shaping HOME Environments and LifeSTYLES to Prevent Childhood Obesity",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy Lifestyle",
        "Home Environment Related Disease",
        "Cognitive Change",
        "Child Behavior",
        "Child Obesity",
        "Parenting",
        "Parents",
        "Parent-Child Relations"
      ],
      "interventions": [
        {
          "name": "HomeStyles-2: Obesity Prevention Program for Families with Children in Middle Childhood",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Rutgers, The State University of New Jersey",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "24 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "24 Years to 50 Years"
      },
      "enrollment_count": 459,
      "start_date": "2023-05-15",
      "completion_date": "2024-07-17",
      "has_results": false,
      "last_update_posted_date": "2026-05-08",
      "last_synced_at": "2026-09-05T03:29:08.166Z",
      "location_count": 1,
      "location_summary": "New Brunswick, New Jersey",
      "locations": [
        {
          "city": "New Brunswick",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04802291"
    },
    {
      "nct_id": "NCT06695533",
      "title": "I Can Do This! Managing My Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetes"
      ],
      "interventions": [
        {
          "name": "Diabetes self management workbook",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2025-08-21",
      "completion_date": "2026-02-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-01",
      "last_synced_at": "2026-09-05T03:29:08.166Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06695533"
    },
    {
      "nct_id": "NCT02299531",
      "title": "Effects of Portion Size and Energy Density of a Single Meal in Preschool Children",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Feeding Behaviors"
      ],
      "interventions": [
        {
          "name": "Varying meal energy density and portion size",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Penn State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "6 Years",
        "sex": "ALL",
        "summary": "3 Years to 6 Years"
      },
      "enrollment_count": 131,
      "start_date": "2013-05",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2014-11-24",
      "last_synced_at": "2026-09-05T03:29:08.166Z",
      "location_count": 1,
      "location_summary": "University Park, Pennsylvania",
      "locations": [
        {
          "city": "University Park",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02299531"
    },
    {
      "nct_id": "NCT03926065",
      "title": "Variations in Palatability and Portion Size of Vegetables on Meal Intake of Preschool Children",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Feeding Behavior"
      ],
      "interventions": [
        {
          "name": "Plain Vegetables Served in 100% Portion Size",
          "type": "OTHER"
        },
        {
          "name": "Plain Vegetables Served in 200% Portion Size",
          "type": "OTHER"
        },
        {
          "name": "Enhanced Vegetables Served in 100% Portion Size",
          "type": "OTHER"
        },
        {
          "name": "Enhanced Vegetables Served in 200% Portion Size",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Penn State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "5 Years",
        "sex": "ALL",
        "summary": "3 Years to 5 Years"
      },
      "enrollment_count": 67,
      "start_date": "2019-05-28",
      "completion_date": "2019-10-29",
      "has_results": true,
      "last_update_posted_date": "2020-09-25",
      "last_synced_at": "2026-09-05T03:29:08.166Z",
      "location_count": 1,
      "location_summary": "University Park, Pennsylvania",
      "locations": [
        {
          "city": "University Park",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03926065"
    },
    {
      "nct_id": "NCT04502979",
      "title": "Learning to Love Mealtime Together",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Infant Obesity",
        "Parenting",
        "Feeding Behavior"
      ],
      "interventions": [
        {
          "name": "Responsive Feeding Training",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Months",
        "maximum_age": "9 Months",
        "sex": "ALL",
        "summary": "3 Months to 9 Months"
      },
      "enrollment_count": 71,
      "start_date": "2017-09-26",
      "completion_date": "2019-04-25",
      "has_results": true,
      "last_update_posted_date": "2020-09-11",
      "last_synced_at": "2026-09-05T03:29:08.166Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04502979"
    },
    {
      "nct_id": "NCT04488016",
      "title": "A Study to Evaluate Relative Bioavailability, Proton Pump Inhibitor (PPI) (Rabeprazole) Effect, Food Effect and Particle Size Effect of New Acalabrutinib Tablet in Healthy Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Bioavailability",
        "B-cell Lymphoid Cancer"
      ],
      "interventions": [
        {
          "name": "Treatment A- Part 1",
          "type": "DRUG"
        },
        {
          "name": "Treatment B- Part 1",
          "type": "DRUG"
        },
        {
          "name": "Treatment C - Part 1",
          "type": "DRUG"
        },
        {
          "name": "Treatment D- Part 1",
          "type": "DRUG"
        },
        {
          "name": "Treatment A-Part 2",
          "type": "DRUG"
        },
        {
          "name": "Treatment B - Part 2",
          "type": "DRUG"
        },
        {
          "name": "Treatment C - Part 2",
          "type": "DRUG"
        },
        {
          "name": "Treatment D - Part 2",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 54,
      "start_date": "2020-06-24",
      "completion_date": "2021-01-20",
      "has_results": false,
      "last_update_posted_date": "2021-02-03",
      "last_synced_at": "2026-09-05T03:29:08.166Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04488016"
    },
    {
      "nct_id": "NCT05019339",
      "title": "HomeStyles-2: Shaping HOME Environments and LifeSTYLES to Prevent Childhood Obesity in SNAP-Education",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy Lifestyle",
        "Home Environment Related Disease",
        "Child Behavior",
        "Cognitive Change",
        "Child Obesity",
        "Parenting",
        "Parents",
        "Parent-Child Relations"
      ],
      "interventions": [
        {
          "name": "Healthy HomeStyles",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Eat Healthy Be Active",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "110 Years",
        "sex": "ALL",
        "summary": "18 Years to 110 Years"
      },
      "enrollment_count": 247,
      "start_date": "2021-11-19",
      "completion_date": "2023-04-30",
      "has_results": false,
      "last_update_posted_date": "2023-06-01",
      "last_synced_at": "2026-09-05T03:29:08.166Z",
      "location_count": 1,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05019339"
    }
  ]
}