{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Carbon+impact+labels",
    "query": {
      "intervention": "Carbon impact labels"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T03:25:41.667Z",
  "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": "NCT05131529",
      "title": "Reshaping Food Choice at University of Michigan",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Climate Change",
        "Food Preferences"
      ],
      "interventions": [
        {
          "name": "Taste-focused labels",
          "type": "OTHER"
        },
        {
          "name": "Carbon impact labels",
          "type": "OTHER"
        },
        {
          "name": "Changing default menu options",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3003,
      "start_date": "2021-08-30",
      "completion_date": "2022-12-18",
      "has_results": false,
      "last_update_posted_date": "2023-01-12",
      "last_synced_at": "2026-09-02T03:25:41.667Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05131529"
    },
    {
      "nct_id": "NCT06678178",
      "title": "Climate Impact Label Design and Fast-Food Meal Selection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Food Selection"
      ],
      "interventions": [
        {
          "name": "Control (QR) Labels",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Warning High Climate Impact Labels",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Traffic Light Labels",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Climate Grade Labels",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Numeric Carbon Footprint Labels",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins Bloomberg School of Public Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 6622,
      "start_date": "2024-12-02",
      "completion_date": "2024-12-06",
      "has_results": true,
      "last_update_posted_date": "2026-01-06",
      "last_synced_at": "2026-09-02T03:25:41.667Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06678178"
    },
    {
      "nct_id": "NCT05592340",
      "title": "Restaurant Menu Carbon Footprint Labeling",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Food Preferences"
      ],
      "interventions": [
        {
          "name": "Exposure to calorie information",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Exposure to carbon footprint information",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2389,
      "start_date": "2022-11-03",
      "completion_date": "2022-12-01",
      "has_results": false,
      "last_update_posted_date": "2022-12-28",
      "last_synced_at": "2026-09-02T03:25:41.667Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05592340"
    },
    {
      "nct_id": "NCT06648226",
      "title": "Food Swaps to Improve the Healthfulness and Reduce the Carbon Footprint of Grocery Purchases",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Food Selection",
        "Nutrition",
        "Food Preferences",
        "Dietary Habits",
        "Sustainability",
        "Healthy Diet"
      ],
      "interventions": [
        {
          "name": "Health swaps",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Climate swaps",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Combined health and climate swaps",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1201,
      "start_date": "2025-05-07",
      "completion_date": "2025-06-25",
      "has_results": true,
      "last_update_posted_date": "2026-06-24",
      "last_synced_at": "2026-09-02T03:25:41.667Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06648226"
    },
    {
      "nct_id": "NCT02247908",
      "title": "Impact of Graphic Cigarette Warnings",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Surgeon General's Warning",
          "type": "OTHER"
        },
        {
          "name": "Graphic Warning",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2149,
      "start_date": "2014-10",
      "completion_date": "2016-09",
      "has_results": false,
      "last_update_posted_date": "2016-09-14",
      "last_synced_at": "2026-09-02T03:25:41.667Z",
      "location_count": 2,
      "location_summary": "Oakland, California • Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02247908"
    }
  ]
}