{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dim+light&page=2", "query": { "intervention": "Dim light", "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?intervention=Dim+light&page=1&page_size=10" }, "source": "remote", "last_synced_at": "2026-09-04T16:47:31.386Z", "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": "NCT07049783", "title": "Examining the Circadian Timing Effects of the Hypotensive Response to Exercise", "overall_status": "RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Young Adults", "Hypertension", "Post-Exercise Hypotension", "Circadian Rhythm" ], "interventions": [ { "name": "Exercise", "type": "BEHAVIORAL" } ], "intervention_types": [ "BEHAVIORAL" ], "sponsor": "Freda Patterson", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "39 Years", "sex": "ALL", "summary": "18 Years to 39 Years" }, "enrollment_count": 30, "start_date": "2025-07-22", "completion_date": "2026-09", "has_results": false, "last_update_posted_date": "2025-08-17", "last_synced_at": "2026-09-04T16:47:31.386Z", "location_count": 1, "location_summary": "Newark, Delaware", "locations": [ { "city": "Newark", "state": "Delaware" } ], "official_url": "https://clinicaltrials.gov/study/NCT07049783" }, { "nct_id": "NCT04578249", "title": "Effects of Blocking Blue Light at Night Post CABG, AVR, MVR, CABG AVR, CABG MVR, or SAH", "overall_status": "RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Circadian Rhythm Disorders" ], "interventions": [ { "name": "Blue light-blocking goggles", "type": "OTHER" }, { "name": "Clear goggles", "type": "OTHER" } ], "intervention_types": [ "OTHER" ], "sponsor": "West Virginia University", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "45 Years", "maximum_age": "75 Years", "sex": "ALL", "summary": "45 Years to 75 Years" }, "enrollment_count": 80, "start_date": "2021-09-20", "completion_date": "2027-05", "has_results": false, "last_update_posted_date": "2026-04-20", "last_synced_at": "2026-09-04T16:47:31.386Z", "location_count": 1, "location_summary": "Morgantown, West Virginia", "locations": [ { "city": "Morgantown", "state": "West Virginia" } ], "official_url": "https://clinicaltrials.gov/study/NCT04578249" }, { "nct_id": "NCT02658708", "title": "Bright Light on Fatigue in Women Being Treated for Breast Cancer", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Breast Neoplasms", "Breast Cancer", "Cancer of Breast", "Cancer of the Breast" ], "interventions": [ { "name": "Bright blue-green light using light visor cap", "type": "OTHER" }, { "name": "Dim red light using light visor cap", "type": "OTHER" }, { "name": "European Organization for Research and Treatment of Cancer-Quality of Life Questionnaire", "type": "OTHER" }, { "name": "Epworth Sleepiness Scale", "type": "OTHER" }, { "name": "Pittsburgh Sleep Quality Index", "type": "OTHER" }, { "name": "Patient-Reported Outcomes Measurement Information System (PROMIS)-Sleep Disturbance", "type": "OTHER" }, { "name": "Patient-Reported Outcomes Measurement Information System (PROMIS)-Cancer-Fatigue", "type": "OTHER" }, { "name": "Digital foot candle datalogging light meter (Extech Instrument, Model SDL400)", "type": "DIAGNOSTIC_TEST" }, { "name": "Polysomnography (Easy Ambulatory 2 Cadwell, Kennewick, WA)", "type": "DIAGNOSTIC_TEST" }, { "name": "Horne-Ostberg Morningness-Eveningness Questionnaire", "type": "OTHER" }, { "name": "Daily Fatigue and Sleep Log", "type": "OTHER" } ], "intervention_types": [ "OTHER", "DIAGNOSTIC_TEST" ], "sponsor": "Washington University School of Medicine", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "21 Years", "maximum_age": null, "sex": "FEMALE", "summary": "21 Years and older · Female only" }, "enrollment_count": 19, "start_date": "2015-10-12", "completion_date": "2017-05-09", "has_results": false, "last_update_posted_date": "2017-09-25", "last_synced_at": "2026-09-04T16:47:31.386Z", "location_count": 1, "location_summary": "St Louis, Missouri", "locations": [ { "city": "St Louis", "state": "Missouri" } ], "official_url": "https://clinicaltrials.gov/study/NCT02658708" }, { "nct_id": "NCT03955510", "title": "Abnormal Food Timing and Circadian Dyssynchrony in Alcohol Induced Colon Carcinogenesis", "overall_status": "ACTIVE_NOT_RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Colorectal Cancer" ], "interventions": [ { "name": "Right time eating", "type": "OTHER" }, { "name": "Delayed time eating", "type": "OTHER" }, { "name": "Sigmoidoscopy", "type": "PROCEDURE" }, { "name": "Optional 24h circadian assessment in the Biological Rhythms lab", "type": "PROCEDURE" }, { "name": "Alcohol", "type": "OTHER" } ], "intervention_types": [ "OTHER", "PROCEDURE" ], "sponsor": "Rush University Medical Center", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "21 Years", "maximum_age": "75 Years", "sex": "ALL", "summary": "21 Years to 75 Years" }, "enrollment_count": 12, "start_date": "2016-07-31", "completion_date": "2026-08", "has_results": false, "last_update_posted_date": "2026-06-09", "last_synced_at": "2026-09-04T16:47:31.386Z", "location_count": 1, "location_summary": "Chicago, Illinois", "locations": [ { "city": "Chicago", "state": "Illinois" } ], "official_url": "https://clinicaltrials.gov/study/NCT03955510" }, { "nct_id": "NCT05184933", "title": "Sleep and Circadian Mechanisms in Hypertension", "overall_status": "RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Hypertension", "Cardiovascular Diseases", "Cardiovascular Risk Factors", "Circadian Rhythms", "Sleep" ], "interventions": [ { "name": "At-home Polysomnography", "type": "OTHER" }, { "name": "Circadian Protocol", "type": "OTHER" }, { "name": "Rested Wakefulness Trial", "type": "OTHER" }, { "name": "Overnight Sleep Trial", "type": "OTHER" }, { "name": "Regularized Sleep Schedule", "type": "BEHAVIORAL" } ], "intervention_types": [ "OTHER", "BEHAVIORAL" ], "sponsor": "Oregon Health and Science University", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "25 Years", "maximum_age": "64 Years", "sex": "ALL", "summary": "25 Years to 64 Years" }, "enrollment_count": 32, "start_date": "2022-08-04", "completion_date": "2029-03-30", "has_results": false, "last_update_posted_date": "2026-02-11", "last_synced_at": "2026-09-04T16:47:31.386Z", "location_count": 1, "location_summary": "Portland, Oregon", "locations": [ { "city": "Portland", "state": "Oregon" } ], "official_url": "https://clinicaltrials.gov/study/NCT05184933" }, { "nct_id": "NCT03464084", "title": "Interaction of Melatonin With MTNR1B Genotype on Glucose Control - Study 2", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Glucose", "Circadian Rhythm", "Melatonin", "Genes", "Light" ], "interventions": [ { "name": "placebo", "type": "DRUG" }, { "name": "melatonin", "type": "DIETARY_SUPPLEMENT" }, { "name": "bright light", "type": "OTHER" }, { "name": "dim light", "type": "OTHER" } ], "intervention_types": [ "DRUG", "DIETARY_SUPPLEMENT", "OTHER" ], "sponsor": "Brigham and Women's Hospital", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "21 Years", "maximum_age": "55 Years", "sex": "ALL", "summary": "21 Years to 55 Years" }, "enrollment_count": 24, "start_date": "2018-02-17", "completion_date": "2022-07-19", "has_results": false, "last_update_posted_date": "2022-07-26", "last_synced_at": "2026-09-04T16:47:31.386Z", "location_count": 1, "location_summary": "Boston, Massachusetts", "locations": [ { "city": "Boston", "state": "Massachusetts" } ], "official_url": "https://clinicaltrials.gov/study/NCT03464084" }, { "nct_id": "NCT04251234", "title": "Light at Night Study", "overall_status": "TERMINATED", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Bipolar Disorder", "Light Sensitivity" ], "interventions": [ { "name": "Light intensity, ~30 lux", "type": "OTHER" }, { "name": "Baseline light intensity, <1 lux", "type": "OTHER" } ], "intervention_types": [ "OTHER" ], "sponsor": "University of Michigan", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "45 Years", "sex": "ALL", "summary": "18 Years to 45 Years" }, "enrollment_count": 2, "start_date": "2020-10-15", "completion_date": "2021-08-04", "has_results": false, "last_update_posted_date": "2021-08-12", "last_synced_at": "2026-09-04T16:47:31.386Z", "location_count": 1, "location_summary": "Ann Arbor, Michigan", "locations": [ { "city": "Ann Arbor", "state": "Michigan" } ], "official_url": "https://clinicaltrials.gov/study/NCT04251234" }, { "nct_id": "NCT04690504", "title": "Validation of Circadian Biomarkers in Patients With Sleep Disorders", "overall_status": "COMPLETED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Sleep Disorders, Circadian Rhythm", "Circadian Rhythm Disorders", "Circadian Rhythm Sleep Disorder", "Advanced Sleep Phase Syndrome (ASPS)", "Delayed Sleep Phase Syndrome", "Sleep Wake Disorders", "Sleep Disorder" ], "interventions": [ { "name": "dim light melatonin onset (DLMO)", "type": "OTHER" } ], "intervention_types": [ "OTHER" ], "sponsor": "Brigham and Women's Hospital", "sponsor_class": "OTHER", "healthy_volunteers": null, "eligibility": { "minimum_age": "18 Years", "maximum_age": "65 Years", "sex": "ALL", "summary": "18 Years to 65 Years" }, "enrollment_count": 50, "start_date": "2021-11-02", "completion_date": "2024-07-01", "has_results": false, "last_update_posted_date": "2024-08-06", "last_synced_at": "2026-09-04T16:47:31.386Z", "location_count": 1, "location_summary": "Boston, Massachusetts", "locations": [ { "city": "Boston", "state": "Massachusetts" } ], "official_url": "https://clinicaltrials.gov/study/NCT04690504" }, { "nct_id": "NCT05937269", "title": "Assessing Impact of Early Physiotherapy on Lymphatic Dysfunction in Head and Neck Cancer Survivorship", "overall_status": "ACTIVE_NOT_RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Lymphedema of Face", "Head and Neck Cancer" ], "interventions": [ { "name": "Near-infrared fluorescence lymphatic imaging", "type": "COMBINATION_PRODUCT" }, { "name": "advanced pneumatic compression therapy", "type": "DEVICE" } ], "intervention_types": [ "COMBINATION_PRODUCT", "DEVICE" ], "sponsor": "The University of Texas Health Science Center, Houston", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 14, "start_date": "2023-10-12", "completion_date": "2026-10-31", "has_results": false, "last_update_posted_date": "2026-08-27", "last_synced_at": "2026-09-04T16:47:31.386Z", "location_count": 1, "location_summary": "Houston, Texas", "locations": [ { "city": "Houston", "state": "Texas" } ], "official_url": "https://clinicaltrials.gov/study/NCT05937269" }, { "nct_id": "NCT07329283", "title": "Nighttime Synchrony of Your Nutrition and Circadian Health", "overall_status": "RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Sleep", "Metabolism Changes", "Circadian Rhythm", "Lifestyle Factors", "Sleep Hygiene", "Sleep Hygiene, Inadequate", "Sleep Deprivation", "Insufficient Sleep", "Circadian Misalignment", "Circadian Dysregulation", "Light Exposure" ], "interventions": [ { "name": "Central Clock Misalignment", "type": "BEHAVIORAL" }, { "name": "Peripheral Misalignment", "type": "BEHAVIORAL" } ], "intervention_types": [ "BEHAVIORAL" ], "sponsor": "University of Utah", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "35 Years", "sex": "ALL", "summary": "18 Years to 35 Years" }, "enrollment_count": 120, "start_date": "2025-12-19", "completion_date": "2031-05-31", "has_results": false, "last_update_posted_date": "2026-01-22", "last_synced_at": "2026-09-04T16:47:31.386Z", "location_count": 1, "location_summary": "Salt Lake City, Utah", "locations": [ { "city": "Salt Lake City", "state": "Utah" } ], "official_url": "https://clinicaltrials.gov/study/NCT07329283" } ] }