Clinical trials
Cognitive Impairment clinical trials
Below are recruiting cognitive impairment clinical trials, each written for real people, not researchers. We’re tracking 575 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05606991Enrolling by invitation
Testing how CPAP affects brain waste clearance during sleep
This study looks at how stopping CPAP for 14 nights affects “brain waste clearance,” a process your brain uses to clear byproducts during sleep. It is testing whether using CPAP versus stopping it changes this brain cleanup in adults with severe obstructive sleep apnea (OSA).
Macquarie Park, New South WalesAges 35–65 - NCT05457998Enrolling by invitation
Study of Alzheimer’s brain markers using memory testing
This trial looks for signs of Alzheimer’s disease in the brain by using memory and thinking tests, and related study procedures. It may help researchers find better ways to identify Alzheimer’s-related changes earlier.
Providence, Rhode IslandAges 50–80 - NCT05215886Enrolling by invitation
Bariatric surgery and memory problems in people with obesity
This study looks at how bariatric (weight-loss) surgery may affect memory and thinking in people with obesity who already have memory decline or dementia. It may help doctors understand which patients benefit most and what changes to expect.
Sacramento, CaliforniaAges 18–75 - NCT04482660Enrolling by invitation
PET brain scan study of tau protein in ALFA volunteers
This study uses a special PET brain scan tracer to measure “tau” protein clumps in the brain. It’s meant to better understand brain changes in people who are already part of the ALFA research program, and may help researchers connect tau levels with memory and thinking.
Barcelona, BarcelonaAges 45 years+ - NCT03687710Enrolling by invitation
Alzheimer’s registry for people with memory concerns or risk
This is a research registry that helps doctors compare how different memory and Alzheimer’s risk groups change over time. It may help researchers learn which people are more likely to develop Alzheimer’s and how to better track early changes.
New York, New YorkAges 18–99 - NCT03618186Enrolling by invitationPhase 2
Brain scan study for African Americans age 30+
This Phase 2 study uses brain imaging (including PET and MRI) to learn more about brain changes. It may help researchers improve how brain patterns are measured and understood, which could guide future care.
Jacksonville, FloridaAges 30 years+ - NCT03370224Enrolling by invitation
Story memory training for older adults
This study tests a memory-skills training approach (the Modified Story Memory Technique) to help older adults with aging-related memory changes. You may be asked to do memory exercises, and some people may also complete an optional brain MRI scan.
East Hanover, New JerseyAges 65 years+ - NCT03101722Enrolling by invitation
Huperzine A for hearing loss, tinnitus, and mild memory issues
This trial tests whether huperzine A can improve hearing-related symptoms along with tinnitus (ringing) and mild cognitive (memory/thinking) problems. If you have mild-to-moderate hearing loss plus bothersome constant tinnitus and some cognitive decline, this study may help researchers see if the treatment makes a difference.
Shanghai, Shanghai MunicipalityAges 60 years+ - NCT03089827Enrolling by invitation
Tests how a brain imaging tracer spreads in Alzheimer’s risk
This trial uses a radioactive imaging tracer to see how it moves and settles in the brain in people with risk factors for Alzheimer’s disease. It may help researchers understand which people show tracer patterns linked to Alzheimer’s changes.
Winston-Salem, North CarolinaAges 55 years+ - NCT07144930Recruiting
Cognitive-motor training for stroke and Moyamoya disease
This trial tests a combined thinking and movement training program for people who have had a stroke or have Moyamoya disease and still have some thinking or movement problems. It may help improve both mental and physical abilities.
TaipeiAges 20–100 - NCT07010536Recruiting
Virtual reality music therapy for stroke recovery
This study tests whether combining virtual reality games with music therapy can help improve thinking and movement skills in people who had a stroke within the last 6 months. It may be a good option if you are between 50 and 75 and can sit up and use your hearing and vision.
Istanbul, IstanbulAges 50–75 - NCT05445180Recruiting
Brain scan study of thinking in cannabis users with psychosis
This study uses brain imaging to understand how thinking works in people who use cannabis, comparing those with psychosis to people without psychosis. It may help researchers learn what brain patterns relate to thinking difficulties and how cannabis use fits in.
Montreal, QuebecAges 16–80 - NCT06930846Recruiting
Brain cancer cognitive training study
This study tests a home-based program called HOBSCOTCH-CA to help with memory and thinking problems after brain cancer treatment. The program uses phone and internet sessions to teach self-management skills.
Lebanon, New HampshireAges 18 years+ - NCT03514524Enrolling by invitation
PET-MRI brain scans for recent injury, stroke, or mild memory changes
This study uses special brain scans to measure proteins and connections in the brain after a recent injury, stroke, or in people with mild memory/behavior changes. The goal is to understand brain changes and how they relate to symptoms, which may help future diagnosis and treatment.
LeuvenAges 18–80 - NCT06867198Recruiting
Peanuts for heart, brain, and gut health
This study tests whether eating peanuts can improve health markers like blood sugar, brain function, and digestion in adults with prediabetes (higher than normal blood sugar levels). You may qualify if you are between 20-59 years old, have prediabetes, and a BMI in the overweight to obese range.
Atlanta, GeorgiaAges 20–59 - NCT06951919Recruiting
HOBSCOTCH study for memory help in MS
This trial tests a program called HOBSCOTCH to help people with MS who have memory or thinking problems. It also includes a caregiver who supports them.
Lebanon, New HampshireAges 20–75 - NCT07073781Recruiting
Probiotics for Brain & Blood Sugar in Overweight Young Adults
This study tests whether taking a probiotic (a 'good bacteria' supplement) can help brain function (thinking, memory) and improve blood sugar control in overweight adults who have higher-than-normal blood sugar. If you're between 18-40, overweight, and don't have diabetes, you may be able to join.
Leeds, Greater ManchesterAges 18–40 - NCT05592678Recruiting
Study brain and memory test changes in Alzheimer’s or mild issues
This study looks at how well people with Alzheimer’s disease (AD) or mild cognitive impairment (MCI) perform on standardized memory/brain tests. It may help researchers understand changes over time, and whether certain types of brain signals or test results track with the condition.
San Antonio, TexasAges 65–100 - NCT05199896Recruiting
Brain and touch study for people with early blindness
This study looks at how the brain works when people who are blind (from birth or early childhood) touch and move. It uses an MRI brain scan to compare responses, aiming to better understand learning and brain processing in early visual loss.
BronAges 18–60 - NCT07646509Recruiting
Mobile app to reduce physical symptoms from stress
This study tests a smartphone app designed to help people with somatic symptom disorder—a condition where stress and emotional distress cause ongoing physical symptoms that don't have a clear medical explanation. The app sends you check-ins and guidance throughout your day to help reduce these symptoms.
Vienna, State of ViennaAges 18–65 - NCT07073521Recruiting
Cognitive therapy for adjusting to vision loss
This study tests new ways to help people adjust to vision loss using thinking and coping strategies. If you are an adult with vision loss and willing to share feedback, this may be a good fit.
Chicago, IllinoisAges 18 years+ - NCT05649514Recruiting
Studying sleep problems in early Alzheimer’s risk patients
This study looks at sleep problems in people with mild Alzheimer’s disease and whether sleep measurements and questionnaires can help researchers understand early changes. You may be able to join if your diagnosis is mild and you can complete repeated sleep and thinking questionnaires with a family caregiver’s help.
Montpellier, HéraultAges 50–85 - NCT06735651Recruiting
Wild blueberries for gut, brain, and heart health in prediabetes
This study looks at whether eating wild blueberries can improve your gut health, brain function, and heart health if you have prediabetes. It may help lower your blood sugar and reduce your risk for diabetes and heart disease.
Atlanta, GeorgiaAges 20–65
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Common questions
- Are there clinical trials for cognitive impairment?
- Yes. Clin2 currently lists 575 recruiting cognitive impairment studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a cognitive impairment trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a cognitive impairment trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.