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
- NCT05491005Recruiting
eHealth program to help type 2 diabetes go into remission
This trial tests an online (eHealth) program to help people with early type 2 diabetes reach diabetes remission. It may help by supporting lifestyle and diabetes management with less in-person care.
JönköpingAges 20–70 - NCT05403632Recruiting
Mediterranean diet during pregnancy to support baby development
This study looks at whether eating a Mediterranean-style diet during early pregnancy can support healthy development of the baby. You may be able to join if you’re in your first trimester and willing to deliver at the study hospital units.
Agropoli, SAAges 18–50 - NCT05381766Recruiting
Food access study using community support and shared actions
This study helps improve access to food by testing a community-based support approach. You may be able to join if you live in certain New York ZIP codes and can complete surveys in your preferred language.
New York, New YorkAges 18–85 - NCT05394363Recruiting
Victoria children birth-cohort study with parent/guardian consent
This study follows children born in a specific 2-year window and their parents or guardians over time. It helps researchers understand how children and families change as they grow, which can guide future health supports in Victoria.
Parkville, VictoriaAges 1 day+ - NCT05356182Recruiting
Low-protein meals during immunotherapy for cancer patients
This trial tests whether eating low-protein meals helps people with metastatic cancer feel better or tolerate immunotherapy (immune checkpoint inhibitors). It’s mainly a pilot/feasibility study, meaning the goal is to see if the diet is safe and doable during treatment.
Buffalo, New YorkAges 18 years+ - NCT05332613Recruiting
Diet and meal timing study for fatty liver
This study looks at whether changing when and how people eat can improve fatty liver disease caused by metabolic problems. It uses MRI to measure liver fat and compares outcomes while participants follow a structured eating schedule.
New York, New YorkAges 18–65 - NCT05339048Enrolling by invitation
Study of adults from Colombia’s Caribbean coast
This study follows adults who were born or are from Colombia’s Caribbean coast. The goal is to learn about health patterns in this community, but you would not be able to join if you meet certain medical or disability-related criteria.
Cartagena, Departamento de BolívarAges 18–80 - NCT05353322Recruiting
Exercise breaks to improve heart and sugar health
This study tests whether taking regular breaks from sitting for long periods can improve heart-related and blood-sugar-related health. It’s for adults who mostly sit, but who don’t already have certain long-term conditions or limits.
New York, New YorkAges 18 years+ - NCT05294367RecruitingEarly Phase 1
Magnesium by diet or skin lotion for people with lymphoma
This early study tests whether replacing magnesium—either by diet or a topical (skin) supplement—can improve safety or other health measures in people with lymphoma. It focuses on people who have a slightly low magnesium level and checks blood magnesium repeatedly during the study.
Rochester, MinnesotaAges 18 years+ - NCT05216042Recruiting
Study of genetics and heart/metabolic health in adults
This study looks at how genetic markers (DNA) relate to heart health and “metabolic” health (how your body manages sugar and fat). You may be asked to provide genetic samples and follow study health checks and protocols to help researchers understand who is at higher risk.
Birmingham, AlabamaAges 18 years+ - NCT05236374Recruiting
Daily beef in a heart-healthy diet to study zinc cells
This study tests whether eating daily beef as part of a heart-healthy diet changes how your body’s cells handle zinc, a mineral important for many functions. It’s designed for older adults and includes strict diet and medication rules to keep results accurate.
Davis, CaliforniaAges 55–70 - NCT05235464Recruiting
Testing a high-protein diet for heart plaque risk
This study checks whether eating more protein affects atherosclerosis, which is plaque buildup in artery walls. It may help researchers understand if a high-protein approach changes health markers linked to heart disease.
Columbia, MissouriAges 45–75 - NCT05080699Enrolling by invitation
Peptide-based diet study for adults on home tube feeding
This study tests whether a special “peptide-based” diet helps people with obesity who rely on home tube feeding after a stroke. It aims to see if this diet is safe and beneficial for weight and overall health while you stay on the nutrition you need.
Rochester, MinnesotaAges 18 years+ - 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 - NCT05084937Enrolling by invitation
Study on celiac disease from teens into adulthood
This trial looks at how people with celiac disease transition from childhood into adulthood, using questionnaires. It also includes people without celiac disease for comparison, to help researchers understand similarities and differences during these teen years.
KuopioAges 13–19 - NCT04896281Recruiting
Phenylalanine-free diet study for ICU adults with high phenylalanine
This study tests whether a phenylalanine-free diet is helpful for ICU patients with high phenylalanine levels in the blood. It aims to see if changing diet in critically ill adults can improve outcomes during their ICU stay.
KeelungAges 20 years+ - NCT04672863Recruiting
Mediterranean diet after a first liver transplant
This study tests whether eating a Mediterranean-style diet after a first liver transplant is safe and helpful for recovery or health. It targets adults who are able to follow a nutrition plan and do not have certain complications or conditions that could interfere with diet changes.
Rochester, MinnesotaAges 18 years+ - NCT04777656RecruitingPhase 3
Crohn’s exclusion diet plus usual care for kids
This study tests whether a specific “exclusion diet” (removing certain foods) added to standard treatment can better control unstable Crohn’s disease in children. It may help reduce inflammation and flare-ups when symptoms are not controlled by usual medicines.
BronAges 6–17 - NCT04634643Recruiting
Studies what causes fatty liver in teens
This study looks at why “nonalcoholic fatty liver disease” happens in teenagers and how it develops. It may help doctors better predict and prevent liver problems in children, even if there isn’t a new drug for you to take.
New Haven, ConnecticutAges 12–18 - NCT04666727Recruiting
Diet and gut microbiome study during screening colonoscopy
This study looks at how a person’s diet (vegetarian vs. omnivorous) affects the germs in the gut and related stool and tissue samples. You may be able to join if you’re getting a screening colonoscopy and meet lifestyle and medication requirements.
Houston, TexasAges 45 years+ - NCT04598022Recruiting
Study how diet affects the gut microbiome in new college students
This study looks at how different eating patterns (vegan, vegetarian, or omnivore) affect the bacteria in your gut over time. It may help researchers understand which diet patterns are linked to healthier gut function.
KielAges 18–25 - NCT04607096Recruiting
Intermittent fasting to improve insulin in prediabetes or early type 2
This study tests whether intermittent fasting can improve how your body releases and uses insulin if you have prediabetes or early type 2 diabetes. It may help your blood sugar control without using insulin.
BerlinAges 18–70 - NCT04590690Recruiting
Gut microbes and sex risks for kidney stones after weight surgery
This study looks at how gut bacteria (microbes), along with sex, may affect the chance of getting kidney stones after bariatric (weight-loss) surgery. It may help doctors understand who is at higher risk so prevention can be improved.
Chicago, IllinoisAges 18–130 - NCT04430426Enrolling by invitation
Study for kidney stone patients with an AGXT gene change
This study looks at people age 18+ who have a history of calcium oxalate kidney stones and who have a specific AGXT gene change found on genetic testing. It involves following a controlled diet for five days, which may help researchers understand how diet affects kidney stones in this group.
Birmingham, AlabamaAges 18 years+
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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.