Clinical trials
Gut Health clinical trials
Below are recruiting gut health clinical trials, each written for real people, not researchers. We’re tracking 83 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07213271Recruiting
Exercise study for obese breast cancer survivors
This study tests whether a physical exercise program can improve metabolism, gut health, fitness, and quality of life in obese women who have completed breast cancer treatment at least one year ago.
BratislavaAges 25–70 - NCT07728032Recruiting
How diet and medicine affect gut health in PKU children
This study looks at how a phenylalanine-restricted diet or certain PKU medicines affect gut health in children with PKU. It also includes healthy siblings or household members as a comparison group.
Birmingham, BirminghamAges 3–17 - NCT07170462RecruitingEarly Phase 1
Cranberry and Gut Health in Crohn's Disease
This trial tests whether taking a daily cranberry supplement can improve gut health and quality of life in people with Crohn's disease. It may help those whose current treatment is stable but still have bothersome symptoms.
Worcester, MassachusettsAges 18–65 - NCT03418857RecruitingPhase 1/Phase 2
Probiotics for weight- and blood-sugar–related gut health
This trial tests whether taking probiotics can improve gut health in people with early metabolic problems related to extra body fat, cholesterol, blood pressure, or blood sugar. It’s a Phase 1/2 study, meaning safety and early effectiveness are being tested.
University Park, PennsylvaniaAges 55–75 - NCT04248127Recruiting
Honey yogurt to improve gut health and mild inflammation
This study tests whether honey-flavored yogurt can improve gut health and “low-grade” inflammation in middle-aged and older women after menopause. You may be asked to follow a yogurt-focused plan and avoid certain foods or supplements to see the effect.
Davis, CaliforniaAges 45–65 - NCT06284577Recruiting
Quality of life and gut health in children with cystic fibrosis
This study looks at how a drug called ETI (a combination of three medicines) affects the quality of life and gut health of children with cystic fibrosis. If you or your child has the right type of CF and is between 2 and 18 years old, this trial may help us understand how treatment improves daily life and digestion.
OsloAges 2–18 - NCT06554314Recruiting
Probiotics for gut health and blood fat in adults
This study tests whether taking a probiotic supplement can improve gut health and reduce blood fat levels in adults who are slightly overweight or have high body fat. It may be a good option for people looking for a natural way to support their health.
Taichung, SouthAges 20–65 - NCT06720558Recruiting
Placebo probiotic effects on gut health in mild GI symptoms
This study tests whether a placebo probiotic can improve gut health and overall well-being in people with mild digestive issues like gas, bloating, or irregularity. If you have mild symptoms that don't stop your daily activities, this trial may help understand if believing you're taking a probiotic can make you feel better.
MilanAges 20–65 - NCT06828159Recruiting
Can wild blueberries improve joint health?
This study tests whether eating wild blueberries can improve joint health in people with arthritis. You would eat blueberries or a placebo daily for several weeks to see if they help with pain and stiffness.
Oklahoma City, OklahomaAges 40–75 - NCT06899581Recruiting
Gut health study for children with cancer
This study looks at gut health in children with certain cancers. It may help researchers understand how to better support children during treatment.
LondonAges 1 month–16 years - NCT07046468Recruiting
Smart pill to check gut health in colon inflammation and cancer
This trial tests a smart pill that measures gut health in people with colon inflammation (ulcerative colitis) or colon cancer. It aims to see if the pill can help doctors better understand how the gut is working during treatment or before surgery.
Nijmegen, GelderlandAges 18 years+ - NCT07354100RecruitingPhase 1/Phase 2
Lactulose to boost gut health during immunotherapy
This study tests whether a simple sugar syrup called lactulose can improve gut health and make immunotherapy work better for certain cancers. Lactulose is taken by mouth along with your regular immunotherapy.
Chicago, IllinoisAges 18 years+ - NCT07435831Recruiting
Kimchi and gut health study
This trial tests whether eating kimchi every day for 3 weeks can improve gut health in people who are overweight. You'll be asked to eat study food daily and follow the study plan.
Davis, CaliforniaAges 19–70 - NCT07377994Enrolling by invitation
Gut health and immunity study with a probiotic in healthy adults
This trial tests a probiotic supplement containing Bacillus coagulans to see if it improves gut health and immune function in healthy adults. If you are generally healthy and not taking certain medications or supplements, you may be able to join.
Bangalore, KarnatakaAges 18–50 - NCT07377942Enrolling by invitation
Probiotic study for gut and immune health in healthy adults
This study tests a probiotic (a type of good bacteria) called Bacillus subtilis to see how it affects digestion and the immune system in healthy adults. It involves taking the product, giving stool samples, and visiting the clinic for checkups.
Bangalore, KarnatakaAges 18–50 - NCT07125001Recruiting
Mango study for Hispanic/Latino teens' health
This study looks at whether eating mango every day for 12 weeks can improve gut health and heart health in Hispanic/Latino teens who are overweight. Participants will be asked to eat a mango product and take daily photos.
Davis, CaliforniaAges 12–19 - NCT06837272Recruiting
Gut health and brain health in Alzheimer's disease
This study looks at how the bacteria in your gut might be connected to memory and thinking problems in Alzheimer's disease. It may help us understand if changes in the gut can affect brain health.
Jining, ShandongAges 60–80 - NCT06941090Recruiting
Stool sample collection for nutrition gut health study
This study asks participants of the NutriNet-Santé health study to provide a stool sample. Researchers want to understand how diet and gut bacteria affect health.
BobignyAges 18 years+ - NCT06433115Recruiting
Lean beef and your heart and gut health trial
This study tests how eating lean beef for 4 weeks affects your heart health and the bacteria in your gut. If you qualify, you'll be asked to follow a consistent diet and activity routine during the study.
Columbia, MissouriAges 18–45 - NCT07207434RecruitingPhase 2
Probiotic supplement for pregnant women to improve gut health
This trial tests whether taking a probiotic during pregnancy can improve gut health in women living in areas where gut infections are common. It may help reduce harmful bacteria and related health problems for both you and your baby.
Matiari, SindhAges 18–49 - NCT06476795Recruiting
Grape pomace from chardonnay for heart and gut health in postmenopausal women
This study tests if consuming a powder made from chardonnay grape pomace (the leftover skins and seeds from winemaking) can improve gut and heart health in postmenopausal women. You may be a good fit if you are between 45-70, have gone through menopause, and have higher levels of blood fats called triglycerides.
Davis, CaliforniaAges 45–70 - NCT06157346Recruiting
Gut bacteria and growth in high-altitude children
This study looks at how gut bacteria affect growth and immune health in children aged 1 to 3 living at high altitudes. It may help find ways to support healthy development.
Shanghai, Shanghai MunicipalityAges 1–3 - NCT06588218Recruiting
Watermelon for gut and heart health in young adults
This study is testing whether eating watermelon every day for 4 weeks can improve gut health and heart health in young adults. If you are overweight and between 18 and 30, you may be able to join.
Tallahassee, FloridaAges 18–30 - NCT06916936Recruiting
Peanut butter study for gut health in kids
This study tests if eating peanut butter every day for a few weeks can improve how your body digests food and stays healthy. It's for kids in elementary or middle school who don't have nut allergies or certain stomach problems.
Tallahassee, FloridaAges 6–13
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Common questions
- Are there clinical trials for gut health?
- Yes. Clin2 currently lists 83 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.