Clinical trials
Diet clinical trials
Below are recruiting diet clinical trials, each written for real people, not researchers. We’re tracking 627 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06417151Enrolling by invitation
Nutrition study for healthy Polish children
This study looks at the eating habits and nutrition of healthy Polish children from 5 months to 6 years old. It helps researchers understand what young children eat so they can give better advice on healthy eating.
Warsaw, Masovian VoivodeshipAges 5 months–6 years - NCT06192407Recruiting
Healthy fats and brain function in older adults
This study tests whether healthy fats (fatty acids) can support brain function as we age. If you are 65–75 and in good general health, you may be able to help researchers learn more about diet and the aging brain.
Burlington, VermontAges 65–75 - NCT06399432Recruiting
Mediterranean diet for psoriasis patients on biologic therapy
This study tests whether adding a Mediterranean diet to your psoriasis treatment can improve your skin. You will be asked to follow a heart-healthy diet for several months while taking a new biologic medicine.
Cleveland, OhioAges 18–94 - NCT06329622RecruitingPhase 3
Does Ketosteril help muscle loss in kidney disease?
This study tests whether a medicine called Ketosteril can improve muscle strength and function in people with moderate to severe chronic kidney disease (CKD) who also have sarcopenia (age-related muscle loss).
ShanghaiAges Any age - NCT06320782Enrolling by invitation
Diet and belly fat study for overweight adults
This study tests how different diets affect belly fat, thigh muscle, and heart health in people who are overweight. It might help you find a way to eat that improves your health.
Recife, PernambucoAges 20 years+ - NCT06325644Recruiting
Ketogenic diet for polycystic kidney disease
This study tests whether a ketogenic diet can slow the progression of polycystic kidney disease in adults who are at risk for rapid decline. You'll follow a carefully planned low-carb, high-fat diet to see if it helps protect your kidneys.
Columbus, OhioAges 18–65 - NCT06331546Recruiting
Study of gut oxalate absorption in calcium oxalate kidney stone patients
This study looks at how your gut absorbs oxalate, a natural substance in many foods that can lead to kidney stones. By eating special diets and pausing certain supplements, researchers can measure your oxalate absorption. This may help find better ways to prevent kidney stones.
Birmingham, AlabamaAges 18–80 - NCT06298734Recruiting
Exercise and diet study for melanoma patients on immunotherapy
This study tests whether adding high-intensity exercise and a high-fiber diet can improve how well immunotherapy works for people with melanoma. It might help you if you are already on immunotherapy and are not currently very active or eating a lot of fiber.
Boston, MassachusettsAges 18 years+ - NCT06288672Recruiting
Skin patch test for food allergies in IBS
This study tests whether a skin patch can help identify food allergies in people with irritable bowel syndrome (IBS) whose symptoms are not well controlled. It involves avoiding certain foods and using patches on your back to see if you react.
North Wales, PennsylvaniaAges 18 years+ - NCT04121806Recruiting
Diet plan for active ulcerative colitis flare-ups
This trial studies whether a specific diet can improve symptoms and reduce inflammation during an active flare of ulcerative colitis. You may be eligible if you have documented active disease and can follow the study diet and medication rules.
Toronto, OntarioAges 18–75 - NCT06266689Recruiting
Dietary data return for infants
This study asks parents to collect and mail in stool samples from their infant over the next two years. Researchers want to learn more about how diet affects baby health.
Durham, North CarolinaAges Up to 1 year - NCT06250309Recruiting
Mediterranean diet vs. Western diet for fatigue in AIH
This study tests whether a Mediterranean diet can reduce fatigue in people with autoimmune hepatitis (AIH) compared to a typical Western diet. You will receive frozen meals for a week and track your energy levels.
Indianapolis, IndianaAges 18–80 - NCT06209723Recruiting
Vegetarian diet study for recent heart attack patients and their partners
This study tests whether a vegetarian diet can help the immune system recover after a heart attack. It is for people who recently had a heart attack and their healthy partners.
NijmegenAges 18 years+ - NCT06222632Enrolling by invitation
MIND diet and forest bathing for heart and mind
This study tests whether a brain-healthy diet (MIND diet) combined with relaxing walks in nature (forest bathing) can help protect your heart and improve your mood. It is for Chinese adults aged 50–75 who have high cholesterol and some anxiety.
Hong KongAges 50–75 - NCT05984888Recruiting
MIND diet study for women with breast cancer
This study is testing whether a special diet called the MIND diet can help women with hormone receptor-positive breast cancer who are getting treatment. The diet focuses on foods that are good for the brain, like leafy greens and berries.
Columbus, OhioAges 45–75 - NCT06188754Recruiting
Healthy lifestyle program for bipolar disorder and sleep issues
This study tests a healthy lifestyle program (including diet changes) for people with bipolar disorder who have sleep problems. It aims to improve sleep and overall well-being by teaching new habits.
Berkeley, CaliforniaAges 18–65 - NCT06155344Recruiting
Vegetarian diet during pregnancy and baby health
This study looks at how a plant-based diet during pregnancy might affect the health of the mother and newborn. It asks pregnant women about their eating habits to see if a more vegetarian diet is linked to better outcomes.
Nantes, Loire-AtlantiqueAges 18 years+ - NCT04219956Recruiting
Low-sugar diet aims to reduce belly-surgery pain
This study tests whether a special diet low in polyamines (a food-related substance) can reduce pain after major abdominal surgery. It compares pain control while you use a patient-controlled morphine pump or take opioid tablets by mouth after surgery.
BrestAges 18 years+ - NCT06044935Recruiting
Nicotinamide riboside for fat burning and metabolism
This study tests whether a supplement called nicotinamide riboside (a form of vitamin B3) helps the body burn fat more efficiently during exercise. It may be a good option if you are overweight or have a specific type of diabetes (MODY2) and want to see if a natural supplement can boost your metabolism.
Bethesda, MarylandAges 18–65 - NCT06055894Recruiting
Plant-based diet and supplements for smoldering myeloma or MGUS
This study tests whether a plant-based diet and certain supplements can help people with smoldering multiple myeloma (SMM) or monoclonal gammopathy of undetermined significance (MGUS). Participants will learn to cook plant-based recipes and track their meals using a phone app.
Basking Ridge, New JerseyAges 18 years+ - NCT05973539Recruiting
Study on how different foods change blood lipids
This study tests how your blood fat levels respond to changes in the types of nutrients you eat (carbohydrates, fats, and proteins). It may help researchers understand what dietary patterns best affect heart and metabolism-related blood measures.
OxfordAges 18–65 - NCT05884723Recruiting
Ketogenic diet before liver surgery for fatty liver
This trial tests whether a ketogenic (very low-carb) diet before liver surgery can reduce fat in the liver. It is aimed at people with colorectal liver metastases who already have fatty liver seen on scans or biopsy.
London, OntarioAges 18 years+ - NCT05808036Recruiting
Test a diet app for IBS symptoms using the DOMINO diet
This trial studies whether a specific diet plan delivered through a phone app (the DOMINO diet) can improve symptoms in people with irritable bowel syndrome (IBS). It may help by changing what you eat to reduce gut symptoms, compared with standard care rules in the study.
LeuvenAges 18–70 - NCT05785884Recruiting
Diet program to help knee osteoarthritis pain
This trial studies whether different diet approaches can reduce knee pain in people with knee osteoarthritis who have certain eating patterns. It may help by changing diet-related factors that can affect inflammation and pain.
Birmingham, AlabamaAges 40–75
Hear when a new Diet trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
Common questions
- Are there clinical trials for diet?
- Yes. Clin2 currently lists 627 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.