Clinical trials
Gut Health clinical trials
Below are recruiting gut health clinical trials, each written for real people, not researchers. We’re tracking 86 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07481578Recruiting
Exercise and gut health study for active men
This study looks at how your training load affects your gut bacteria and how that relates to exercise performance and muscle health. It may help understand overreaching in healthy men.
Leuven, Vlaams BrabantAges 18–45 - 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 - NCT06754319Recruiting
Gut bacteria and brain connection in child OCD
This study looks at how the bacteria in your gut might affect OCD in children and teens. It tests a possible link between your gut, brain, and OCD symptoms.
Shanghai, Shanghai MunicipalityAges 7–17 - NCT05774704RecruitingPhase 1/Phase 2
Curcumin eye study for people with retinal amyloid deposits
This early-stage study tests whether curcumin (a natural plant compound) can affect eye changes in people who have amyloid deposits in the retina. It aims to see if the treatment is safe and possibly helpful for vision-related outcomes.
Lubbock, TexasAges 40–89 - NCT05124886Recruiting
Study gut–kidney link in people with bowel or stone problems
This study looks at how problems in the gut can lead to kidney stone risk, especially in people with inflammatory bowel disease or after certain weight-loss surgery. Your participation may help researchers understand the gut–kidney connection and identify why stones happen.
New York, New YorkAges 18–80 - NCT06545123Recruiting
How different exercises affect gut health in older adults with muscle loss
This study looks at how different types of exercise can change the bacteria in your gut for older adults who have muscle loss (sarcopenia). You will be assigned to one of two exercise programs to see which one helps your muscles and gut health the most.
PortoAges 60 years+ - NCT05112614Recruiting
Study links gut bacteria to cancer treatment response
This study looks at how the bacteria in your gut change during cancer treatment (and during some blood stem cell transplants). It may help researchers understand why some people respond differently and guide better future treatment.
Scottsdale, ArizonaAges 18–99 - NCT07575529Recruiting
Senior Milk Powder and Gut Health in Healthy Aging
This study tests whether a special milk powder containing beneficial bacteria and fiber (called synbiotics) can improve gut health in adults aged 40–65. You'll use a smartphone app and Apple Watch to track your health and provide samples over several weeks.
SingaporeAges 40–65 - NCT07818109Enrolling by invitation
Risk factors for carrying resistant gut bacteria in the community
This study looks at why some healthy people carry resistant bacteria in their gut (called ESBL-producing bacteria). Researchers will collect stool and urine samples and ask about your daily life to find possible risk factors. You won't receive any treatment, but your participation can help scientists understand how to prevent the spread of these bacteria.
Buenos Aires, Buenos Aires F.D.Ages 18 years+ - NCT06005298Recruiting
Testing SBIRT to help with PrEP and alcohol use
This study looks at whether talking about alcohol use can help people stick with their PrEP routine. It tests a simple program called SBIRT (Screening, Brief Intervention, and Referral to Treatment) to support your health and HIV prevention.
Louisville, KentuckyAges 18–85 - NCT06951477Recruiting
Gut health and knee replacement revision study
This study looks at how the bacteria in your gut might affect recovery after a second knee replacement surgery. Researchers want to learn more about the connection between gut health and surgical outcomes.
London, OntarioAges Any age - NCT06360900Recruiting
Vagus nerve stimulation study for functional dyspepsia
This trial tests a combination of a non-invasive nerve stimulation device and supportive therapy to help people with functional dyspepsia. The goal is to improve digestion and reduce stomach pain.
Boston, MassachusettsAges 18–65 - NCT07191678Recruiting
Gut health in preterm babies receiving blood transfusions
This study looks at how different types of feeding affect the gut of very preterm babies when they receive a blood transfusion. If your baby qualifies, the team will do extra monitoring and ultrasound scans to learn more about gut health during transfusions.
LondonAges 5 months–7 months - NCT04775355Recruiting
Track urine and gut changes during prostate cancer treatment
This study looks at how your urine and gut (intestine) microbes change while you undergo prostate cancer treatments, including hormone therapy (androgen deprivation) and/or radiation. The goal is to better understand these biological changes, which may help improve future treatment planning.
Duarte, CaliforniaAges 18 years+
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Common questions
- Are there clinical trials for gut health?
- Yes. Clin2 currently lists 86 recruiting gut health 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 gut health 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 gut health 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.