Clinical trials
Adult clinical trials
Below are recruiting adult clinical trials, each written for real people, not researchers. We’re tracking 3,715 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06527209Enrolling by invitation
Coffee and agave drink study for appetite in obesity
This trial tests if a special coffee drink with agave fiber can help control appetite in adults with obesity. You would drink the beverage daily and report how hungry you feel.
Guadalajara, JaliscoAges 25–55 - NCT06509776Enrolling by invitation
Bone growth and hormone health in young adults
This study looks at how bones mature and how hormones change as you become a young adult. If you were born in Denmark in 2006 or 2007 and are 18, you may be invited to help researchers understand these changes.
AalborgAges 18–19 - NCT06507137Enrolling by invitation
Fractal walking training for older adults
This study tests a new way of walking training using fractal patterns to help older adults improve their balance and reduce fall risk. You will do walking exercises guided by a computer, and it may help you stay steady on your feet.
Almada, Monte de CaparicaAges 60–100 - NCT06494670Enrolling by invitation
Trends in muscle and bone pain in U.S. adults
This study looks at how common different types of muscle and bone pain have been in U.S. adults over time. It uses data from a national health survey to understand trends, which may help improve pain care.
Ages Any age - NCT06487962Enrolling by invitation
Study on continuous glucose monitors for low-income adults with type 1 diabetes
This trial tests a program to help low-income adults with type 1 diabetes use continuous glucose monitors (CGM). You and a family member or friend will attend four weekly sessions to learn how to get the most out of the device.
Middletown, ConnecticutAges 18 years+ - NCT06434558Enrolling by invitation
MRI predictors of cryolysis for sleep apnea
This study uses MRI scans to see how well a cold treatment (cryolysis) works for obstructive sleep apnea. It is only open to people already in the ARCTIC-3 trial at the University of Pennsylvania.
Philadelphia, PennsylvaniaAges Any age - NCT06407141Enrolling by invitation
Brain stimulation study for older adults with mild memory loss
This trial tests whether a harmless brain stimulation technique called TPS can improve memory and thinking in older adults with mild memory problems. You may be able to join if you have MCI, are right-handed, and are generally healthy otherwise.
Hong KongAges 50–100 - NCT06401694Enrolling by invitation
Enhanced home meal program for older adults' health
This trial is testing a new, enhanced home-delivered meal program for older adults. It aims to see if these meals improve health and well-being for people who are already eligible for Meals on Wheels and are at nutritional risk.
Storrs, ConnecticutAges 60 years+ - NCT06391294Enrolling by invitation
Brain stimulation study for language mapping during awake surgery
This study uses gentle electrical stimulation on the brain during awake surgery to understand how language works. It's for people having brain tumor removal or epilepsy monitoring who can speak English and do not have serious speech or thinking problems.
Chicago, IllinoisAges 18–80 - NCT06370702Enrolling by invitation
Can hand grip exercises prevent blood clots from PICC lines?
This study tests if simple hand grip exercises can help prevent blood clots in the arm for people who just got a PICC line. If you are at least 18 and can do the exercises, you may be able to join.
Cincinnati, OhioAges 18 years+ - NCT06369571Enrolling by invitationPhase 1/Phase 2
Improving heart health in adults with epilepsy on a modified Atkins diet
This study tests whether a statin medication (atorvastatin) can help lower cholesterol and improve heart health in adults with epilepsy who have been on a modified Atkins diet for a year or more. It may be a good fit if you have high cholesterol and are not already on a statin or have had heart problems.
Baltimore, MarylandAges 18 years+ - NCT06336525Enrolling by invitation
Sleep health in rural Appalachia and Mississippi Delta
This study examines how sleep is linked to heart and metabolic health in people living in rural Appalachia and the Mississippi Delta. If you are already part of the RURAL Study, you may be able to join this sleep-focused part of the research.
Boston, MassachusettsAges 25–65 - NCT06251817Enrolling by invitation
Wideband ear sound test in Thai adults
This study measures how sound travels through the ear in Thai adults with normal hearing or conductive hearing loss. The results will help doctors better understand ear function and improve diagnosis.
Khon KaenAges 18–59 - NCT06154135Enrolling by invitation
Test of DBLG1 closed-loop insulin delivery for type 1 diabetes
This study tests how well a new closed-loop insulin delivery system (DBLG1) helps manage blood sugar and improves quality of life for adults with type 1 diabetes. If you are starting this system, the study will track your glucose control and ask about your daily experiences.
AalstAges 18 years+ - NCT06136793Enrolling by invitation
Healthy home habits for Chinese-heritage adults
This study tests a program to help Chinese-heritage adults with heart or diabetes conditions adopt healthier eating and lifestyle habits at home. It includes online resources and support to make lasting changes.
New Brunswick, New JerseyAges 30–70 - NCT06133530Enrolling by invitation
Human milk sugars for gut health in Antarctica
This study tests whether natural sugars found in human milk (called HMOs) can improve gut health and the immune system. Researchers are looking for healthy adults who are willing to travel to Antarctica for the study.
ErfurtAges 18–65 - NCT06050655Enrolling by invitation
Lingual aligners for adults: how well do they work?
This trial tests whether lingual aligners (braces placed on the inside of your teeth) are effective for straightening teeth in adults. If you are an adult planning to get orthodontic treatment, this study may be for you.
Geneva, Canton of GenevaAges 18 years+ - NCT05989412Enrolling by invitation
Mobile screening for depression in Rotterdam Zuid
This study uses a mobile app to screen for signs of major depression in adults from diverse backgrounds in Rotterdam Zuid. The goal is to find people who might have undiagnosed depression and guide them to care.
RotterdamAges 18 years+ - NCT05983874Enrolling by invitationPhase 1
Booster HIV vaccine study for those who got the first shots
This study tests two booster doses of an HIV vaccine to see if they are safe and boost the immune system. It is for healthy adults who already received three earlier doses of a related vaccine.
AmsterdamAges 18–51 - NCT05962398Enrolling by invitation
Follow-up study for men previously treated with CSL222
This study checks long-term safety and outcomes in men with hemophilia B who previously received CSL222. It may help your care team better understand how well the treatment lasts over many years.
Phoenix, ArizonaAges 18 years+ - NCT05942638Enrolling by invitation
Tracking how concussion affects college driving over time
This study follows young adults who drive to see how a concussion may affect driving abilities over time. You may be asked to complete driving- and health-related assessments, and the results could help improve safety and guidance after concussion.
Athens, GeorgiaAges 18 years+ - NCT05876819Enrolling by invitation
Care and welfare services for disabled adults over 50
This study focuses on improving care and support services for people who are disabled and aged 50 or older. It may help by testing better “welfare” and healthcare support for people who have been using healthcare services for a while.
Shiraz, DarsAges 50 years+ - NCT05758467Enrolling by invitation
Study linking adult oral health, social factors, and heart health
This study looks at how people’s oral health in adulthood relates to social factors and heart health. To join, you must have already taken part in specific past health surveys.
BergenAges 71–72 - NCT05709743Enrolling by invitation
Tests visual switching in healthy adults
This study looks at how people switch attention between different visual targets during a visual search task. It may help researchers better understand how visual focus and thinking work in everyday situations.
Bethlehem, PennsylvaniaAges 18 years+
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Common questions
- Are there clinical trials for adult?
- Yes. Clin2 currently lists 3,715 recruiting adult 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 adult 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 adult 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.