Clinical trials
Diet clinical trials
Below are recruiting diet clinical trials, each written for real people, not researchers. We’re tracking 626 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07672691Recruiting
How diet affects gut health and inflammation
This study looks at how different types of food (fats, carbs, protein) affect your gut bacteria, inflammation, and metabolism. It may help understand how diet can improve health.
KrakowAges 18–60 - NCT07671872Recruiting
Testing an Anti-Inflammatory Diet for Crohn's Disease
This study tests whether a specially designed anti-inflammatory American diet can help control mild to moderate Crohn's Disease symptoms. Participants will follow a diet plan, with guidance from the research team, to see if it reduces inflammation and improves quality of life.
Miami, FloridaAges 16–75 - NCT05615779Recruiting
Personalized fiber (B-fructan) diet for inflammatory bowel disease
This trial tests whether a tailored diet high in B-fructans can improve inflammatory bowel disease (ulcerative colitis or IBD-unclassified) in people in mild-to-moderate remission. It may help your gut and reduce bowel inflammation, and it involves colonoscopy and sample collection.
Edmonton, AlbertaAges 6–39 - NCT07189676Recruiting
Healthy eating study for adults with metabolic issues
This study tests how eating sustainably can improve heart and metabolic health. It looks at whether a diet with more plant-based foods and less red meat can help people with conditions like high blood pressure or prediabetes.
Copenhagen, CopenhagenAges 45–70 - NCT06949891Recruiting
Keto diet for acromegaly
This trial tests if a ketogenic (very low-carb) diet can help lower IGF-I levels in people with acromegaly who are already on stable medication. If you have acromegaly and your IGF-I levels are still above normal despite treatment, this diet might offer an additional way to manage your condition.
RotterdamAges 18 years+ - NCT07165548Recruiting
Testing a special diet for weight and health in obesity
This trial tests whether a special diet with foods that make you feel full can help people with overweight or obesity lose weight and improve their heart, metabolic, and joint health.
Pamplona, NavarreAges 18–65 - NCT07117903Recruiting
Ketogenic diet follow-up study in Shanghai
This study follows up with people who completed the first Zhongshan Ketogenic Diet Study in 2025. It looks at the long-term effects of the diet. You may be eligible if you live in Shanghai and took part in the earlier study.
Shanghai, Shanghai MunicipalityAges 18–60 - NCT06538831Recruiting
Ultra-processed foods and heart health
This study looks at how eating ultra-processed foods (like packaged snacks and sugary drinks) affects heart health markers such as cholesterol and blood pressure. If you are generally healthy and have a stable weight, you may be able to join.
Québec, QuebecAges 18–75 - NCT07646262Recruiting
Gluten-Free vs Mediterranean Diet for Rheumatoid Arthritis
This study compares two eating patterns—a gluten-free diet and a Mediterranean diet—to see which might help reduce inflammation and improve symptoms in people with rheumatoid arthritis. You would follow one diet for the study period while your doctors monitor how you feel.
Gaziantep, ŞehitkamilAges 19–65 - NCT07613645Recruiting
Lifestyle changes to prevent recurring C. difficile infection
This study tests whether specific lifestyle changes during treatment for C. difficile infection (a serious gut bacteria infection) can help prevent it from coming back. You'll receive standard antibiotic treatment and follow a controlled diet while researchers track your recovery.
Ann Arbor, MichiganAges 18 years+ - NCT05165706Recruiting
Study of how obesity affects insulin resistance over time
This study follows adults over time to understand how weight and body chemistry relate to insulin resistance. It may help researchers learn why insulin resistance happens and what could prevent or improve it.
Stanford, CaliforniaAges 35–65 - NCT07544524Recruiting
Plant-Based Diet for Kidney Disease in Asian Adults
This study tests whether eating mostly plants (with some animal products) can safely help people with moderate kidney disease. Researchers will compare this diet to a standard kidney-friendly diet and see how it affects kidney function and overall health.
SingaporeAges 21–79 - NCT07540845Recruiting
Regular Diet After Colorectal Surgery
This study tests whether patients can safely eat a regular diet right after colorectal surgery (surgery to remove part of the colon or rectum), rather than waiting. Researchers want to see if this speeds up recovery and improves outcomes.
New York, New YorkAges 18 years+ - NCT07494266Recruiting
Potassium in plant-based diet for kidney patients
This trial tests whether a plant-based diet with more potassium is safe for people with advanced chronic kidney disease (CKD) compared to a plant-based diet with less potassium. It may help you understand how to manage your potassium levels while eating more plants.
Huddinge, Stockholm LänAges 20–85 - NCT07494968Recruiting
Finding ways to track diet compliance in IBS patients
This study looks for signs in your body—like breath and blood tests—that can show how well you are following a special diet for IBS. It aims to find better ways to track diet compliance, which could help make dietary treatments more effective.
Ann Arbor, MichiganAges 18–65 - NCT07438652Recruiting
Mediterranean vs paleo diet for rheumatoid arthritis
This 12-week study compares two diets (Mediterranean and paleo) to see which one better helps rheumatoid arthritis symptoms, muscle health, and quality of life. It is for adults aged 40 to 60 who have been diagnosed with rheumatoid arthritis.
Cairo, Al-ManialAges 40–60 - NCT07402226Recruiting
Diet study for bloating with scleroderma
This study tests whether a special diet can help reduce bloating and stomach discomfort in people with scleroderma (systemic sclerosis). You'll follow a specific meal plan to see if it improves your digestive symptoms.
Ann Arbor, MichiganAges 18 years+ - NCT06850493Recruiting
Ketogenic Diet Before Weight-Loss Surgery
This study tests whether following a ketogenic diet (a low-carb, high-fat eating plan) before weight loss surgery can improve your health and recovery. You will be asked to follow the diet for a few weeks before your scheduled Roux-en-Y gastric bypass.
Veldhoven, North BrabantAges 18–65 - NCT06130956Recruiting
Vegan diet before knee replacement surgery study
This study compares a 2-week vegan diet to a regular diet before knee replacement surgery. It looks at how the diet affects protein turnover in the knee joint.
ArnhemAges 60–80 - NCT07247487Recruiting
Diet and Heart Health in Rosario
This study looks at how different diets (vegan, vegetarian, or omnivorous) affect heart health and metabolism in Rosario. It's a good fit if you're a generally healthy adult who has been following one of these diets for at least a year.
Rosario, Santa Fe ProvinceAges 18–65 - NCT07118657Recruiting
Vegan diet's effect on gut health in kids with autoimmune hepatitis
This study looks at how a vegan diet changes the bacteria in the gut and how that affects diet and disease in children with autoimmune hepatitis. Healthy children are included as a comparison group.
New Delhi, National Capital Territory of DelhiAges birth–18 years - NCT07049224Recruiting
Beef vs. plant-based diet for muscle health in older adults
This study compares the effects of a diet containing beef versus a plant-based diet on how well your body builds muscle protein. It aims to find which diet better supports muscle strength and function in healthy older individuals.
Maastricht, LimburgAges 65–85 - NCT06933212Recruiting
Mediterranean diet for CADASIL and CAA
This trial is testing whether a Mediterranean diet (rich in fruits, vegetables, whole grains, and healthy fats) can help people with CADASIL or cerebral amyloid angiopathy (CAA) — two conditions that affect blood vessels in the brain. If you have one of these diagnoses, the study may help you understand how diet can support your brain health.
MilanAges 18 years+ - NCT06768216Recruiting
Mediterranean vs. low-fat diet for fatty liver in overweight kids
This trial compares two diets—a Mediterranean-style diet and a low-fat diet—to see which better reduces liver fat in overweight children and teens with fatty liver disease (MASLD). It aims to find a safe, effective eating plan for young people.
New Delhi, National Capital Territory of DelhiAges 8–18
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Common questions
- Are there clinical trials for diet?
- Yes. Clin2 currently lists 626 recruiting diet 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 diet 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 diet 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.