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ClinicalTrials.gov public records Last synced Oct 23, 2026, 2:30 PM EDT

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Showing 25–48 of 346 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Progressive Cognitive Decline Clear all
Completed Not applicable Interventional

Caprylic Triglyceride for Treatment of Cognitive Impairments in Multiple Sclerosis

NCT01848327
View directory record Official record
Conditions
Relapsing Remitting MS, Secondary Progressive MS, Primary Progressive MS
Interventions
Caprylic Triglyceride, Placebo
Dietary Supplement
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 59 Years
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jan 25, 2018 · Synced Oct 23, 2026, 2:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Omega-3 and Blueberry Supplementation in Age-Related Cognitive Decline

NCT01746303
View directory record Official record
Conditions
Age-related Memory Disorders, Mood Disorders
Interventions
Omega-3 fatty acid, Blueberry powder, Placebo oil, Placebo powder
Dietary Supplement · Other
Lead sponsor
University of Cincinnati
Other
Eligibility
62 Years to 80 Years
Enrollment
94 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2016
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated May 27, 2016 · Synced Oct 23, 2026, 2:30 PM EDT
Active, not recruiting Not applicable Interventional

Everyday Memory Impairment in PD-related Cognitive Decline

NCT04474379
View directory record Official record
Conditions
Parkinson Disease, Mild Cognitive Impairment
Interventions
Strategy Training (Time- and Event- Based)
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
50 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Oct 23, 2026, 2:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Brain Health Program for Older Adults With Subjective Cognitive Decline

NCT05934136
View directory record Official record
Conditions
Memory Loss (Excluding Dementia), Healthy Lifestyle, Risk Reduction Behavior
Interventions
My Healthy Brain 1, My Healthy Brain 2
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
60 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 24, 2025 · Synced Oct 23, 2026, 2:30 PM EDT
Recruiting No phase listed Observational

Characterizing Cognitive Decline in Late Life Depression: The ADNI Depression Project

NCT02434393
View directory record Official record
Conditions
Major Depression, Late Life Depression (LLD)
Interventions
Not listed
Lead sponsor
University of Southern California
Other
Eligibility
65 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2027
U.S. locations
2
States / cities
San Francisco, California • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 25, 2025 · Synced Oct 23, 2026, 2:30 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Brain Health in Youth With Normal Weight, Overweight and Obesity at Risk for Type 2 Diabetes (T2D)

NCT05277558
View directory record Official record
Conditions
Type2 Diabetes, Type 2 Diabetes Mellitus in Obese, Dysglycemia, Microvascular Complications, Brain Structure, Obesity, Childhood, Diabetes in Adolescence, Inflammation, Insulin Resistance, Overweight, Childhood, Cognitive Decline
Interventions
Observational
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
12 Years to 17 Years
Enrollment
117 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
2
States / cities
St Louis, Missouri • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 18, 2025 · Synced Oct 23, 2026, 2:30 PM EDT
Completed Not applicable Interventional Results available

Lidocaine For Neuroprotection During Cardiac Surgery

NCT00938964
View directory record Official record
Conditions
Cognitive Decline
Interventions
Lidocaine, Placebo
Drug
Lead sponsor
Duke University
Other
Eligibility
50 Years and older
Enrollment
550 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2017
U.S. locations
2
States / cities
Durham, North Carolina • Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated May 10, 2019 · Synced Oct 23, 2026, 2:30 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Closed-Loop Brain Stimulation as a Potential Intervention for Cognitive Decline

NCT05907343
View directory record Official record
Conditions
Mild Cognitive Impairment, Alzheimer Dementia (AD)
Interventions
Closed-loop TBS, Open-loop TBS
Device
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 90 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Oct 23, 2026, 2:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Long-term Effects of Blueberry Supplementation on Brain Health in Older Adults

NCT05764824
View directory record Official record
Conditions
Cognitive Decline, Nutrition, Healthy, Brain Injuries
Interventions
Blueberry powder, Controlled and matched powder
Dietary Supplement · Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
65 Years to 99 Years
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Oct 23, 2026, 2:30 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Cognition, Flavonoids, Exercise, Gut Microbiome

NCT06495190
View directory record Official record
Conditions
Cognitive Decline, Mild
Interventions
Blueberry, Walking, Placebo, Stretching
Dietary Supplement · Behavioral
Lead sponsor
Appalachian State University
Other
Eligibility
65 Years to 85 Years
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 12, 2025 · Synced Oct 23, 2026, 2:30 PM EDT
Completed No phase listed Observational

Neurobehavioral Phenotypes in MPS III

NCT01873911
View directory record Official record
Conditions
Sanfilippo Syndrome Type A, Sanfilippo Syndrome Type B, Hurler Syndrome
Interventions
Not listed
Lead sponsor
University of Minnesota
Other
Eligibility
2 Years to 12 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 1, 2019 · Synced Oct 23, 2026, 2:30 PM EDT
Completed No phase listed Observational Results available

Parkinson Disease and DBS: Cognitive Effects in GBA Mutation Carriers

NCT03234478
View directory record Official record
Conditions
Parkinson, Parkinson Disease, Genetic Predisposition, GBA Gene Mutation, Cognitive Decline
Interventions
Not listed
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
30 Years to 75 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Oct 23, 2026, 2:30 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Preventing Cognitive Decline With Alternative Therapies

NCT00010920
View directory record Official record
Conditions
Dementia, Memory Disorders
Interventions
Ginkgo Biloba Extract
Drug
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
85 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2004
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 18, 2006 · Synced Oct 23, 2026, 2:30 PM EDT
Completed Phase 4 Interventional Results available

Cognitive Decline in Non-demented PD

NCT01340885
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Strattera, Exelon, Placebo
Drug · Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jul 7, 2020 · Synced Oct 23, 2026, 2:30 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Longitudinal Evaluation of Amyloid Risk and Neurodegeneration - the LEARN Study

NCT02488720
View directory record Official record
Conditions
Cognition Disorders
Interventions
Not listed
Lead sponsor
University of Southern California
Other
Eligibility
65 Years to 85 Years
Enrollment
538 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2023
U.S. locations
40
States / cities
Birmingham, Alabama • Phoenix, Arizona • Sun City, Arizona + 32 more
Source: ClinicalTrials.gov public record
Updated Nov 18, 2023 · Synced Oct 23, 2026, 2:30 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

AMPLIFI: Adaptive Modulation of Plasticity Through Lactate and Fitness Interventions

NCT06950060
View directory record Official record
Conditions
Stroke, Chronic, Aging, Cognitive Decline, Motor Dysfunction, Neuroplasticity
Interventions
High intensity cycling, Low-intensity cycling, Health education session, Moderate Intensity Aerobic Exercise
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 85 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jul 17, 2026 · Synced Oct 23, 2026, 2:30 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Assessing the Influence of Habitual Beef Intake on Key Molecular Markers of Brain Health

NCT07623785
View directory record Official record
Conditions
Healthy Aging, Brain Health, Cardiometabolic Health, Normal Aging, Cognitive Decline Prevention in Robust Older Adults
Interventions
Lean Beef, Non-Beef Control
Other
Lead sponsor
South Dakota State University
Other
Eligibility
65 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Brookings, South Dakota
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Oct 23, 2026, 2:30 PM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Alzheimer's Plasma Extension

NCT06416072
View directory record Official record
Conditions
Preclinical Alzheimer's Disease, Alzheimer's Disease (AD)
Interventions
NAV4694
Radiation
Lead sponsor
University of Southern California
Other
Eligibility
55 Years to 80 Years
Enrollment
3,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
56
States / cities
Birmingham, Alabama • Phoenix, Arizona • Sun City, Arizona + 48 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Oct 23, 2026, 2:30 PM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

Preventing Alzheimer's With Cognitive Training

NCT03848312
View directory record Official record
Conditions
Age-related Cognitive Decline, Alzheimer's Disease and Related Dementias
Interventions
Cognitive Training, Computerized Cognitive Stimulation
Behavioral
Lead sponsor
University of South Florida
Other
Eligibility
65 Years and older
Enrollment
7,600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2028
U.S. locations
7
States / cities
Gainesville, Florida • Jacksonville, Florida • Sarasota, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Oct 23, 2026, 2:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Systematic Investigation of Phonetic Complexity Effects on Articulatory Motor Performance in Progressive Dysarthria

NCT03613038
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis, Parkinson Disease
Interventions
Phonetic complexity effects on speech motor performance
Behavioral
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
19 Years to 90 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
2
States / cities
Fairway, Kansas • Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated May 17, 2022 · Synced Oct 23, 2026, 2:30 PM EDT
Completed Not applicable Interventional Results available

Digital Cognition in Multiple Sclerosis

NCT03569618
View directory record Official record
Conditions
Multiple Sclerosis, Cognitive Decline
Interventions
Tablet-based Game
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 71 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 26, 2020 · Synced Oct 23, 2026, 2:30 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Feasibility of A Smartphone Application Intervention in Community Settings: A Pretest-Posttest Pilot Study

NCT07313540
View directory record Official record
Conditions
Aging, Dementia, Cognitive Decline
Interventions
utmbHealthyBrain Smartphone App
Behavioral
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
50 Years to 100 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 27, 2026 · Synced Oct 23, 2026, 2:30 PM EDT
Completed No phase listed Observational Results available

Vitamin D to Improve Outcomes by Leveraging Early Treatment: Long-term Brain Outcomes in Vitamin D Deficient Patients

NCT03733418
View directory record Official record
Conditions
Cognitive Decline
Interventions
540,000 IU vitamin D3, Placebo
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
7
States / cities
Aurora, Colorado • Boston, Massachusetts • New York, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 21, 2024 · Synced Oct 23, 2026, 2:30 PM EDT
Recruiting Not applicable Interventional

A Multi-Modal Combination Intervention to Promote Cognitive Function in Older Intensive Care Unit Survivors

NCT06411561
View directory record Official record
Conditions
Critical Illness, Delirium, Cognitive Impairment, Cognitive Decline, Alzheimer's Disease, Dementia, Circadian Dysrhythmia, Sleep Disturbance
Interventions
SLEEP + COG, COG, SLEEP, AC
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
60 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 20, 2025 · Synced Oct 23, 2026, 2:30 PM EDT