Clinical trials
Diet clinical trials
Below are recruiting diet clinical trials, each written for real people, not researchers. We’re tracking 651 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05887674Recruiting
Non-drug memory program for early Alzheimer’s and memory loss
This trial studies a non-medication (non-drug) program to improve memory and daily thinking in people with mild cognitive impairment or mild Alzheimer’s disease. It may help by supporting brain function and monitoring symptoms over time.
Shanghai, Shanghai MunicipalityAges 60–90 - NCT05931536Recruiting
How diet, stress, and thinking affect the gut
This study looks at how what you eat and your stress level may change thinking and the bacteria in your gut. It may help researchers understand links between lifestyle, brain function, and gut health.
CorkAges 18–50 - NCT05942287Recruiting
Weight and weight loss study in heart failure with weak pumping
This study looks at how obesity and weight loss affect people living with heart failure where the heart pumping strength is reduced. It uses heart imaging (MRI) to measure the heart and may help clarify what weight changes do for symptoms and heart function.
Jersey, JerseyAges 18–85 - NCT05946044Recruiting
Preventing Knee Arthritis in People at Higher Risk
This study looks at ways to help prevent knee osteoarthritis before it starts. It is designed for women with higher body weight who currently have no arthritis signs on scans and do not have much knee pain.
Boston, MassachusettsAges 50 years+ - NCT05962190Recruiting
Short-term extra fat intake to study liver metabolism
This study tests what happens to the liver and fat metabolism when you eat extra fat for a short time. It may help researchers understand how diet affects liver function and metabolism in otherwise stable adults.
OxfordAges 18–65 - NCT05962372Recruiting
Culturally tailored diet program for adults in Puerto Rico
This study tests a diet program designed to fit Puerto Rico culture and daily life. It may help adults with weight or blood sugar or blood fat concerns improve their health through regular check-ins.
San JuanAges 30–65 - NCT05978206RecruitingPhase 2
Strength, muscle mass, and nutrition therapy for older adults with sarcopenia
This study tests if a combination of a medicine (nandrolone), physical therapy, and a special diet can help older adults with muscle loss (sarcopenia) improve their strength and muscle mass. It is for people age 60 to 99 who have been diagnosed with sarcopenia based on specific muscle strength and mass measurements.
Warsaw, Masovian VoivodeshipAges 60–99 - NCT05985486Recruiting
Lifestyle change for brain health in Down syndrome
This study looks at how a healthy lifestyle program can improve brain health in adults with Down syndrome who are overweight or obese. You will attend a medical center three times over a year for tests, and you'll need a caregiver to support you.
Kansas City, KansasAges 18–64 - NCT06011499Recruiting
Online lifestyle program for prostate cancer survivors
This study tests an internet-based program to help prostate cancer survivors who are overweight and frail improve their health. You will be assigned to either a lifestyle coaching group or a usual care group, and both groups are followed for about 6 months.
Portland, OregonAges 18 years+ - NCT06018636Recruiting
Diet and nutrition in early childhood growth
This study looks at how diet and nutrition affect young children's growth and development. It may help you learn more about feeding your child well.
Swat, Khyber PakhtunkhwaAges 1 day–2 years - NCT06032104Recruiting
Bean supplement study for colon cancer screening patients
This trial tests whether adding a daily bean supplement to your diet can improve colon health. You may be eligible if you are between 30 and 80, overweight, and scheduled for a routine colonoscopy.
Sacramento, CaliforniaAges 30–80 - NCT06047626Recruiting
Living well with lymphoma: a fatigue and nutrition study
This study tests if eating more fruits and vegetables can help reduce persistent fatigue in people with lymphoma. You will receive questionnaires by email to track your fatigue and diet over time.
Ann Arbor, MichiganAges 18 years+ - NCT06051318Recruiting
Diet and gut microbiome effects on blood sugar in healthy adults
This study looks at how your gut bacteria and the foods you eat affect your blood sugar after meals. You'll wear a small sensor to track your blood sugar for 10 days and provide stool samples.
Florianópolis, Santa CatarinaAges 18–60 - NCT06055036Recruiting
Stress reduction for heart health in Black men
This study looks at how reducing stress can improve cardiovascular health in Black men. It involves lifestyle changes and support to help lower your risk of heart disease.
Columbus, OhioAges 18 years+ - NCT06069622Recruiting
How a gene affects weight-loss treatment response
This study looks at how a weight-loss medication affects people with obesity who may have a specific gene difference (caveolin-1). It aims to understand why some people respond differently to GLP-1 treatments like semaglutide.
Boston, MassachusettsAges 18 years+ - NCT06074250RecruitingPhase 2/Phase 3
Pregnancy, mood, and gut health study
This study tests whether a nutritional supplement can help prevent depression and anxiety during and after pregnancy. It looks at how the mother's gut bacteria may influence mood.
Toronto, OntarioAges 18–43 - NCT06089603RecruitingPhase 4
CPAP for Sleep Apnea with High Red Blood Cells
This study tests whether CPAP therapy (a machine that helps keep your airway open while you sleep) can lower high red blood cell counts in people who have both sleep apnea and polycythemia. It may help reduce the need for other treatments.
Madrid, MadridAges 18–80 - NCT06099288Recruiting
Strong families start at home: A healthy eating study for Latinx families
This study tests a program to help families eat healthier together at home. It is for Latinx caregivers of young children and involves recording a few meals to see how the program helps.
Providence, Rhode IslandAges 18 years+ - NCT06111040Recruiting
Parenting study for food-driven young children
This study tests a program to help parents handle feeding their 4- or 5-year-old child who is very motivated by food. It aims to support healthy eating habits.
Philadelphia, PennsylvaniaAges 4–5 - NCT06129110Recruiting
Weight loss and muscle fat study for adults aged 18-70
This study looks at how losing weight affects the fat that sits inside your muscles (called intermuscular fat). It might help people with overweight to better understand how weight loss can improve muscle health.
Aurora, ColoradoAges 18–70 - NCT06144905Recruiting
Norwegian Gut Bacteria Study in Anorexia Nervosa
This study looks at gut bacteria in women with anorexia nervosa compared to healthy women. It aims to understand how gut health relates to the condition and recovery.
Ås, ÅsAges 16–50 - NCT06152614Recruiting
Healthy diet and exercise for Black adults with high blood pressure
This study tests a combined eating and exercise program for Black adults with high blood pressure. The MIND-style diet and aerobic training may help lower your blood pressure over time.
Indianapolis, IndianaAges 35–75 - NCT06166810Recruiting
Healthy gut bacteria and high fiber diet study
This study looks at gut bacteria in healthy people who eat a high fiber diet. If you are between 20 and 50, eat at least 5 fruits and vegetables a day, and meet other health criteria, you may be able to help researchers learn how diet affects good gut bacteria.
Clermont-FerrandAges 20–50 - NCT06169449Recruiting
Weight management for overweight endometrial cancer patients
This trial tests a weight management program for women with early-stage endometrial cancer or atypical hyperplasia who want to keep their fertility. It aims to see if losing weight can improve treatment outcomes.
Beijing, ChinaAges 18 years+
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Common questions
- Are there clinical trials for diet?
- Yes. Clin2 currently lists 651 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.