Clinical trials
Dietary Intervention clinical trials
Below are recruiting dietary intervention clinical trials, each written for real people, not researchers. We’re tracking 119 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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+ - NCT04959474Recruiting
Pre-surgery radiation study with or without calorie restriction
This trial looks at whether a planned calorie-reduction diet before surgery can change how early breast cancer responds to a short course of radiation. It may help people understand if diet could improve outcomes alongside standard pre-surgery treatment.
Philadelphia, PennsylvaniaAges 40 years+ - 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+ - NCT05384873Recruiting
Immunonutrition to improve immunotherapy in metastatic lung cancer
This trial studies whether adding special nutrition (oral immunonutrition supplements) can help immunotherapy work better in people with metastatic non-small cell lung cancer. Participants receive immunotherapy, with or without chemotherapy, and must be able to take oral supplements.
PaviaAges 18 years+ - NCT05528471Recruiting
Test whether fructose affects fatty liver in teens
This study looks at how fructose (a type of sugar) may affect fatty liver disease (NAFLD) in teens with obesity. The goal is to learn whether fructose changes liver health, using MRI/MRS scans to measure the liver.
Edmonton, AlbertaAges 12–18 - NCT05530070Recruiting
Study diet effects on heart risk in celiac disease
This study looks at how celiac disease and gluten-free (GFD) or gluten-containing diets affect blood and cardiovascular (heart and blood vessel) risk factors. It may help researchers understand which diet habits are most important for heart health in people with celiac disease.
Pécs, BaranyaAges 18 years+ - NCT05675878RecruitingPhase 3
Testing a specific diet for Gulf War illness
This Phase 3 study tests whether following a study diet can improve symptoms of Gulf War illness. It may help people by confirming whether diet changes are an effective treatment.
Washington D.C., District of ColumbiaAges 50–75 - NCT05774652Recruiting
Teen study following mothers from an earlier pregnancy project
This study follows teenagers whose mothers took part in an earlier lifestyle-in-pregnancy study (started in 2007–2010). It may help researchers understand how that earlier study relates to teen health and development.
OdenseAges 13–65 - NCT05805319Recruiting
Food intervention for people with lung cancer on immunotherapy
This trial studies whether a specific diet can help people with non-small cell lung cancer who are receiving immunotherapy (a standard cancer treatment). It mainly checks whether participants can follow the diet plan and tolerate the food changes safely.
Montreal, QuebecAges 18 years+ - NCT06336902RecruitingPhase 1
Immunotherapy plus fasting diet and vitamin C for KRAS-mutated colorectal cancer
This trial tests a combination of two immunotherapy drugs (botensilimab and balstilimab) plus a fasting-mimicking diet and high-dose vitamin C for people with a specific type of advanced colorectal cancer (KRAS-mutated). It aims to see if this approach can help when standard treatments have stopped working.
Fullerton, CaliforniaAges 18 years+ - 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 - NCT06429124Recruiting
Time-restricted eating for mild cognitive impairment
This trial tests whether a time-restricted eating schedule (eating only during certain hours of the day) can help people with mild cognitive impairment (MCI) or early Alzheimer’s disease. It is a lifestyle study that can be done mostly from home with a computer or smartphone.
Phoenix, ArizonaAges 55–89 - NCT06464497Recruiting
Whole foods for teens with obesity pilot study
This study tests whether replacing processed foods with whole foods (like fruits, vegetables, and whole grains) for 8 weeks can help reduce body fat in teens with obesity. Both the teen and a parent or caregiver will learn to prepare and eat healthier meals together.
Nashville, TennesseeAges 10 years+ - NCT06475807Recruiting
Dietary changes for people on immunotherapy for cancer
This study tests whether a change in diet can help people with early-stage melanoma or lung cancer who are receiving immunotherapy (a type of treatment that helps your immune system fight cancer). You will be asked to follow a diet, give blood and stool samples, and complete questionnaires to see how the diet affects your body and treatment.
Pittsburgh, PennsylvaniaAges 18 years+ - NCT06548789RecruitingPhase 2
Immunotherapy plus prebiotic foods for melanoma before surgery
This study tests if eating certain prebiotic foods while receiving immunotherapy before melanoma surgery can boost your immune system and improve treatment response. Participants eat study-provided foods and receive standard immunotherapy (ipilimumab with or without nivolumab, or nivolumab with or without relatlimab).
Houston, TexasAges 18 years+ - NCT07687849Recruiting
Workplace diet study for Avon firefighters
This study tests a workplace diet program designed for UK firefighters. It aims to see if the program can improve your health and well-being while on the job.
BristolAges 18 years+ - NCT06809166RecruitingPhase 4
Contrave for weight loss in adults with obesity
This study tests whether a weight loss medication called Contrave can help adults with obesity lose weight by changing how their body uses energy and handles food. If you qualify, you will take Contrave and be monitored for several months.
Ottawa, OntarioAges 18–64 - NCT06858280RecruitingPhase 3
Patiromer and diet for potassium in dialysis patients
This trial tests if a medication called patiromer, combined with a low-potassium diet, can help manage potassium levels in people on chronic dialysis. The goal is to improve quality of life by allowing a more flexible diet.
Bergamo, BGAges 18 years+ - NCT06885125Recruiting
Diet Study to Improve Fertility in Women with Endometriosis
This study tests if a special diet can help women with endometriosis who are having trouble getting pregnant and are doing IVF. It aims to improve chances of success by changing what you eat.
MilanAges 18–39 - NCT06891911Recruiting
Free groceries to help lower blood pressure
This study provides free, healthy groceries for 4 weeks to see if they can help lower blood pressure. You may qualify if you live in Florida, Georgia, or Tennessee and have high blood pressure that is not too severe.
Boston, MassachusettsAges 18 years+ - NCT07120334Recruiting
Mobile health app for stroke survivors with prediabetes or diabetes
This trial tests a mobile app that helps people recovering from a stroke who also have prediabetes or type 2 diabetes improve their diet and health. You will use the app for about 12 weeks, and it may help you manage your blood sugar and prevent future strokes.
Honolulu, HawaiiAges 30–65 - NCT07263529Recruiting
Iron pills for women with low iron but not anemic
This trial tests whether oral iron therapy can prevent anemia in women who have low iron stores but normal blood counts. It aims to find out if taking iron helps improve energy and overall health.
Kâğıthane, IstanbulAges 18–55 - NCT07315659Recruiting
Time-restricted eating for weight loss maintenance in obesity
This study tests whether eating only during a set window of hours each day can help people with obesity keep weight off after losing it. You would follow a specific meal schedule and get all your food provided for a period.
Granada, GranadaAges 18–70 - NCT07396896Recruiting
A study on brain tumors and weight gain after treatment
This trial tests a diet therapy for young people who have gained a lot of weight after treatment for a certain type of brain tumor. The goal is to see if the diet can help manage obesity related to the tumor or its treatment.
Florence, FlorenceAges 7–30
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Common questions
- Are there clinical trials for dietary intervention?
- Yes. Clin2 currently lists 119 recruiting dietary intervention 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 dietary intervention 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 dietary intervention 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.