Clinical trials
Diet clinical trials
Below are recruiting diet clinical trials, each written for real people, not researchers. We’re tracking 647 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07479095Recruiting
Low-sugar, high-fat diet to improve PET scans for LPA lung cancer
This study tests whether a 7-day low-sugar, high-fat diet before a PET/CT scan can improve detection of a specific type of lung cancer called lepidic-predominant adenocarcinoma (LPA). If you have a suspicious lung nodule or biopsy-confirmed LPA, this diet may help the scan be more accurate.
Candiolo, Torino (TO)Ages 18 years+ - NCT07481747RecruitingPhase 3
Weekly injection for weight loss in adults with obesity
This trial tests a once-weekly injection (tirzepatide) versus a placebo to help people who are obese or overweight with related health conditions lose weight. You may qualify if you have tried to lose weight through diet before, but have not been successful.
Shenzhen, GuangdongAges 18 years+ - NCT07483112Recruiting
Fiber supplement study for advanced lung cancer patients
This trial tests whether adding a fiber supplement to standard immunotherapy can help treat advanced non-small cell lung cancer. It's for people whose tumors have high PD-L1 levels and no treatable genetic mutations.
BaselAges 18 years+ - NCT07487428Recruiting
Diet study for early-stage CLL
This study tests whether a whole-food plant-based diet for 4 weeks can affect immune function and metabolism in people with early-stage CLL who have not yet had treatment.
München, BavariaAges 18 years+ - NCT07494201Recruiting
MIMICC study for people with colorectal cancer
This trial is studying patients with colorectal cancer who are scheduled for surgery. Researchers want to learn more about the cancer to improve future treatments.
Candiolo, Torino (TO)Ages 18–75 - NCT07495904Recruiting
Weight loss drug effects on body muscle with extra protein
This trial tests a weight-loss medication (GLP-1 receptor agonist) combined with dietary protein to see if it helps protect muscle while losing fat. It is for adults with obesity who are not taking certain other medications or supplements.
HeraklionAges 30–65 - NCT07496749Recruiting
Ketogenic diet for super-refractory seizure emergency
This trial tests if a high-fat, low-carb diet (ketogenic diet) can help stop seizures that have not responded to other treatments. It is for patients with a very severe, ongoing seizure emergency called super-refractory status epilepticus.
Hefei, AnhuiAges 14–80 - NCT07501377Recruiting
Diet and brain health study for women in menopause with overweight
This trial tests whether a diet rich in fiber and plant compounds (polyphenols) can reduce brain inflammation in perimenopausal women who are overweight. If you're in early menopause and have some inflammation, this study may show how diet affects your brain health.
Leipzig, SaxonyAges 35–60 - NCT07518407Recruiting
Nutrition Education and Diet Guidance While Using GLP-1 Medication
This study teaches adults on GLP-1 medication (like Ozempic or Wegovy) how to eat better and lose weight using a smartphone app. Researchers want to see if personalized nutrition advice helps you get better results from your medication.
Columbia, South CarolinaAges 18–65 - NCT07543016Recruiting
Amino Acids and Exercise for FSHD Muscle Weakness
This study tests whether amino acid supplements combined with exercise can help people with FSHD (a genetic muscle disease) build strength and reduce fatigue. Researchers will compare participants who receive amino acids plus exercise training to a control group.
Voghera, PaviaAges 18–50 - NCT07564219Recruiting
Beta-Hydroxybutyrate to Boost CAR-T Cell Therapy in Multiple Myeloma
This trial tests whether a natural metabolite called beta-hydroxybutyrate can strengthen CAR-T cell therapy (a type of cancer-fighting cell treatment) in multiple myeloma patients. The goal is to help your immune cells work better against your cancer.
Hamburg, Free and Hanseatic City of HamburgAges 18 years+ - NCT07584473Recruiting
Testing for Non-Celiac Wheat Sensitivity in Celiac Disease Relatives
This study investigates whether relatives of celiac disease patients who have digestive symptoms and other health concerns might have non-celiac wheat sensitivity or irritable bowel syndrome. Researchers will perform a small intestinal biopsy and dietary testing to understand the connection between wheat sensitivity and symptoms in this family group.
Palermo, PAAges 18 years+ - NCT07605169Recruiting
Long-Term Health Effects of Lifestyle Changes
This study follows people who already completed a lifestyle intervention program to see how diet and exercise changes affect their health and well-being over time. Researchers want to understand if these changes have lasting benefits.
Gothenburg, Västra Götaland CountyAges 45–65 - NCT07605676RecruitingPhase 4
Acupuncture stimulation versus strength training for anemia from heavy periods
This study tests whether acupuncture-based electrical stimulation or resistance (strength) training can help women with moderate iron-deficiency anemia caused by heavy menstrual bleeding. Both treatments aim to improve energy levels and blood counts alongside standard medical care.
CairoAges 20–30 - NCT07640594Recruiting
Food Vouchers and Nutrition Support in Philippine Households
This study tests whether food vouchers help low-income families in the Philippines eat better and more nutritious food. Researchers will track how the vouchers affect what families buy and eat, and how that impacts health—especially for women and young children.
Washington D.C., District of ColumbiaAges birth–99 years - NCT07649148Recruiting
Tracking What You Eat to Help Your Heart
This study asks people with moderate heart failure to use a food-tracking app and work with a coach to eat fewer ultra-processed foods. Researchers want to see if changing your diet this way can improve how you feel and how well your heart works.
Cleveland, OhioAges 18 years+ - NCT07650123Recruiting
7-Ketolithocholic Acid for Prediabetes Treatment
This study tests whether a compound called 7-ketolithocholic acid can help people with prediabetes (blood sugar levels higher than normal but not yet diabetic) prevent or delay developing type 2 diabetes. Participants will take the study medication while following a healthy diet and exercise plan.
BordigheraAges 18–70 - NCT07620808Enrolling by invitation
Medically-Tailored Meals and Heart Health Study
This study tests whether personalized meal plans designed by doctors can help people with type 2 diabetes and high blood pressure improve their heart health. You'll receive specially prepared meals for 8 months and answer questions about your health.
New York, New YorkAges 20 years+ - NCT07620028Enrolling by invitation
Improving Diet Quality Through Better Access to Protein
This study looks at how to help families in Indianapolis get better nutrition, especially protein-rich foods. Researchers will work with you and your child over about a year to understand food access and eating habits.
Indianapolis, IndianaAges 5 years+ - NCT07431658Enrolling by invitation
Diet and stress effects on omalizumab response in chronic hives
This study looks at how diet and oxidative stress (a type of cell damage) affect the severity of chronic hives and how well patients respond to the medication omalizumab (Xolair). It may help find ways to improve treatment by understanding these factors.
IstanbulAges 18–65 - NCT07358390Enrolling by invitation
Potatoes to improve diet in young children
This study tests whether adding potatoes to meals can help young children eat better. It involves children aged 2-6 in Head Start classrooms, their parents, and teachers.
University Park, PennsylvaniaAges 2 years+ - NCT07309484Enrolling by invitation
Lifestyle and health study
This study is investigating how everyday habits and lifestyle choices are linked to staying healthy. You will fill out an online questionnaire about your lifestyle.
ZadarAges 18 years+ - NCT07298603Enrolling by invitation
Nutrition plan for women with PCOS
This study tests whether a specific nutrition plan can help women with PCOS improve their health. You would follow a guided diet and have check-ins to see how it affects your symptoms and well-being.
Samsun, AtakumAges 20–45 - NCT07289672Enrolling by invitation
Food limits in Crohn's and colitis
This study looks at how diet affects people with Crohn's disease or ulcerative colitis who have moderate inflammation. It aims to understand if certain foods make symptoms worse or better.
MalmöAges 18 years+
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Common questions
- Are there clinical trials for diet?
- Yes. Clin2 currently lists 647 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.