{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Sleep+Circadian+Rhythms&page=2",
    "query": {
      "condition": "Sleep Circadian Rhythms",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Sleep+Circadian+Rhythms&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-07-24T07:53:32.462Z",
  "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": "NCT05015478",
      "title": "Rhythmic Light Therapy for Alzheimer's Disease Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Mild Cognitive Impairment"
      ],
      "interventions": [
        {
          "name": "Tailored Rhythmic Lighting Intervention",
          "type": "DEVICE"
        },
        {
          "name": "Placebo Rhythmic Lighting Intervention",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Icahn School of Medicine at Mount Sinai",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "55 Years and older"
      },
      "enrollment_count": 52,
      "start_date": "2022-01-10",
      "completion_date": "2023-09-12",
      "has_results": true,
      "last_update_posted_date": "2026-06-23",
      "last_synced_at": "2026-07-24T07:53:32.462Z",
      "location_count": 2,
      "location_summary": "Menands, New York • New York, New York",
      "locations": [
        {
          "city": "Menands",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05015478"
    },
    {
      "nct_id": "NCT05091021",
      "title": "Skeletal Effects of Chronic Night Shift",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Osteoporosis",
        "Circadian Rhythm Sleep Disorder, Shift Work Type"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "20 Years to 50 Years"
      },
      "enrollment_count": 59,
      "start_date": "2021-10-27",
      "completion_date": "2026-02-19",
      "has_results": false,
      "last_update_posted_date": "2026-05-15",
      "last_synced_at": "2026-07-24T07:53:32.462Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05091021"
    },
    {
      "nct_id": "NCT06158204",
      "title": "Improving Metabolic & Mental Health in Female Healthcare Shift Workers",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep, Inadequate",
        "Overweight and Obesity",
        "Work Related Stress",
        "Healthy Lifestyle"
      ],
      "interventions": [
        {
          "name": "Lifestyle Intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Auburn University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 13,
      "start_date": "2024-01-02",
      "completion_date": "2025-03-01",
      "has_results": false,
      "last_update_posted_date": "2025-01-08",
      "last_synced_at": "2026-07-24T07:53:32.462Z",
      "location_count": 1,
      "location_summary": "Auburn, Alabama",
      "locations": [
        {
          "city": "Auburn",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06158204"
    },
    {
      "nct_id": "NCT01855126",
      "title": "Individually Tailored Lighting System to Improve Sleep in Older Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep Disturbances"
      ],
      "interventions": [
        {
          "name": "Blue light",
          "type": "OTHER"
        },
        {
          "name": "Red light",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Rensselaer Polytechnic Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 46,
      "start_date": "2013-03",
      "completion_date": "2017-04",
      "has_results": true,
      "last_update_posted_date": "2019-01-29",
      "last_synced_at": "2026-07-24T07:53:32.462Z",
      "location_count": 1,
      "location_summary": "Troy, New York",
      "locations": [
        {
          "city": "Troy",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01855126"
    },
    {
      "nct_id": "NCT04992611",
      "title": "Sleep Timing, Eating and Activity Measurement Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep",
        "Circadian Rhythm Disorders",
        "Dietary Habits"
      ],
      "interventions": [
        {
          "name": "Sleep Extension (Early)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Sleep Extension (Late)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Children's Hospital Medical Center, Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "14 Years to 18 Years"
      },
      "enrollment_count": 190,
      "start_date": "2021-07-16",
      "completion_date": "2025-07-26",
      "has_results": false,
      "last_update_posted_date": "2025-12-18",
      "last_synced_at": "2026-07-24T07:53:32.462Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04992611"
    },
    {
      "nct_id": "NCT01792583",
      "title": "The Nuvigil and Provigil Pregnancy Registry",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Narcolepsy",
        "Obstructive Sleep Apnea",
        "Shift Work Sleep Disorder"
      ],
      "interventions": [
        {
          "name": "Modafinil/armodafinil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cephalon, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 191,
      "start_date": "2009-06-30",
      "completion_date": "2023-11-30",
      "has_results": false,
      "last_update_posted_date": "2024-02-05",
      "last_synced_at": "2026-07-24T07:53:32.462Z",
      "location_count": 1,
      "location_summary": "West Chester, Pennsylvania",
      "locations": [
        {
          "city": "West Chester",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01792583"
    },
    {
      "nct_id": "NCT01586039",
      "title": "Investigating the Effects of Evening Light Exposure on Melatonin Suppression, Alertness and Nocturnal Sleep",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Non-visual Photoreception"
      ],
      "interventions": [
        {
          "name": "Visible light",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "18 Years to 30 Years"
      },
      "enrollment_count": 33,
      "start_date": "2012-08",
      "completion_date": "2014-03",
      "has_results": true,
      "last_update_posted_date": "2021-09-14",
      "last_synced_at": "2026-07-24T07:53:32.462Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01586039"
    },
    {
      "nct_id": "NCT02846077",
      "title": "Multi-scale Modeling of Sleep Behaviors in Social Networks",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "No intervention. Observation only",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 729,
      "start_date": "2013-09",
      "completion_date": "2018-06",
      "has_results": false,
      "last_update_posted_date": "2018-07-11",
      "last_synced_at": "2026-07-24T07:53:32.462Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02846077"
    },
    {
      "nct_id": "NCT04157244",
      "title": "The Music, Sleep and Dementia Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dementia",
        "Alzheimer Disease",
        "Circadian Rhythm Disorders",
        "Circadian Rhythm Sleep Disorder",
        "Insomnia",
        "Hypersomnia",
        "Cognitive Impairment",
        "Cognitive Decline",
        "Mild Cognitive Impairment",
        "Frontotemporal Dementia",
        "Neurocognitive Disorders",
        "Vascular Dementia",
        "Sleep Disorder",
        "Memory Impairment"
      ],
      "interventions": [
        {
          "name": "Tailored music listening intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "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": 32,
      "start_date": "2019-03-12",
      "completion_date": "2021-01-12",
      "has_results": false,
      "last_update_posted_date": "2021-01-13",
      "last_synced_at": "2026-07-24T07:53:32.462Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04157244"
    },
    {
      "nct_id": "NCT06188754",
      "title": "Healthy Lifestyles for Bipolar Disorder",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Time Restricted Eating",
        "Diet, Mediterranean"
      ],
      "interventions": [
        {
          "name": "Time restricted eating",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Mediterranean diet",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, Berkeley",
      "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": 300,
      "start_date": "2024-06-05",
      "completion_date": "2029-02-28",
      "has_results": false,
      "last_update_posted_date": "2025-02-06",
      "last_synced_at": "2026-07-24T07:53:32.462Z",
      "location_count": 1,
      "location_summary": "Berkeley, California",
      "locations": [
        {
          "city": "Berkeley",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06188754"
    }
  ]
}