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
- NCT05356000Recruiting
Testing how oxalate is absorbed to help prevent kidney stones
This study looks at how your body absorbs oxalate, a natural chemical that can contribute to calcium kidney stones. If you’ve had calcium stones—especially with high urine oxalate—it may help researchers find ways to reduce future stone risk.
Chicago, IllinoisAges 18–70 - 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+ - NCT05361343Recruiting
First line healthy aging study for adults
This study looks at a “first-line” approach to healthy aging in generally healthy adults. You may be invited because you’re interested in active longevity and can follow lifestyle and study instructions.
Saint PetersburgAges 18–90 - 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+ - NCT05432362Recruiting
Energy sensing brain study in depression and weight groups
This study tests how the brain and body respond to “energy sensing” in people with depression and in people with different body weights. You may be asked to do assessments and follow specific health and diet rules so the researchers can compare groups.
Graz, StyriaAges 18–40 - 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 - NCT05545306Recruiting
Study tests how extra calories change your daily energy use
This study looks at how eating more calories affects your body’s natural heat production and total energy use over a full day. It may help researchers better understand how the body manages weight and energy.
Phoenix, ArizonaAges 18–60 - NCT05562180RecruitingPhase 2/Phase 3
Food prescription program for adults to lose weight
This study is for adults in Kaiser Permanente who are already enrolled in the FoodRx (food prescription) program and want to lose weight. It tests whether this food prescription approach can help with weight loss.
Pasadena, CaliforniaAges 18 years+ - NCT05564949Recruiting
Ketogenic diet for brain tumors after standard treatment
This trial studies whether a very low-carbohydrate diet (a ketogenic diet) can help people with certain brain tumors. It’s meant as an added treatment alongside the usual care to see if it’s safe and potentially beneficial.
Chaïdári, AthensAges 18–80 - NCT05572502Recruiting
Online program for type 2 diabetes reversal goals
This trial studies an online program designed to help people with type 2 diabetes improve their health and diabetes control. You may be able to join if you already have type 2 diabetes and can follow the study plan and your current medication routine.
Washington D.C., District of ColumbiaAges 18 years+ - NCT05590351Recruiting
Mobile app coaching for exclusive breastfeeding in Pakistan
This study tests whether a smartphone app can help pregnant mothers practice “exclusive breastfeeding” and other early child-feeding habits. If you join, you’ll receive app support during pregnancy and after birth to improve feeding and breastfeeding outcomes.
Karachi, SindhAges 18–48 - NCT05651919Recruiting
Blood test study to understand diabetic heart weakness
This study measures immune cells from your blood to find markers (biomarkers) that may explain or predict diabetic cardiomyopathy, a type of heart condition linked to diabetes. You may benefit mainly by being closely monitored and contributing to research that could improve future diagnosis or risk tracking.
BronAges 40–85 - 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 - NCT05713617Recruiting
Health program for Latino families raising kids with disabilities
This study tests a family health promotion program for Latino caregivers of children ages 6 to 17 who have an intellectual or developmental disability. It may help by teaching practical ways to support health and well-being at home.
Chicago, IllinoisAges 6–100 - NCT05716880RecruitingPhase 3
Keto-like diet supplements for muscle loss in nephrotic syndrome
This Phase 3 study tests a keto-like supplement (Ketosteril) to help prevent or slow muscle loss in people with nephrotic syndrome. It may help by improving nutrition when the kidneys are leaking large amounts of protein.
Warsaw, Masovian DistrictAges 18 years+ - NCT05721976Recruiting
Grandmother–daughter lifestyle program for certain cancer survivors
This pilot study tests a supportive program for grandmothers who finished breast, endometrial, or ovarian cancer treatment and their adult daughters. It aims to encourage healthier habits, including physical activity, using phone-based support and Spanish/English materials.
Miami, FloridaAges 21 years+ - NCT05732623Recruiting
Study of early colorectal cancer risk factors in younger adults
This study looks at factors that may contribute to early-onset colorectal cancer (cancer in the colon or rectum diagnosed at a young age). It compares people with early-onset colorectal cancer to people without cancer to better understand possible causes and risks.
Denver, ColoradoAges 18–49 - NCT05750732Recruiting
Study weight loss and a gene variant
This trial looks at how weight loss relates to a specific gene difference (CLOCK 3111T/C). You may be eligible if you’re in a certain age and body-mass range and don’t have conditions or medicines that could affect weight or metabolism.
AnkaraAges 20–50 - NCT05770570RecruitingPhase 2
Diet and activity texting support for Mexican American drivers
This Phase 2 study tests a structured program using texts and recordings to help people improve diet and physical activity for weight loss. It focuses on specific Spanish-speaking groups and also includes a separate track for taxi/FHV drivers.
New York, New YorkAges 21 years+ - NCT05783141Recruiting
Prebiotic drink study in healthy toddlers in daycare
This study tests whether giving a prebiotic (a food ingredient that supports gut health) affects digestion in healthy toddlers. It focuses on children who are in daycare and have normal bowel habits, to see if the gut responds well.
BrusselsAges 10 months–3 years - NCT05793996RecruitingPhase 4
Testing an iron infusion for iron deficiency in HFpEF
This study checks how common iron deficiency is in people with HFpEF (heart failure with preserved pumping strength) and tests whether an iron infusion (Ferinject®) improves health. It targets people with stable heart symptoms and lab results showing low iron stores or related iron deficiency.
TomskAges 18 years+ - NCT05795439Recruiting
Plant-based nutrition program for adults with type 2 diabetes
This study tests whether a structured plant-based diet plan, weekly online classes, and keeping exercise routine steady can improve health in adults with type 2 diabetes. You may qualify if you’re able and willing to follow the program for the first 16 weeks.
Washington D.C., District of ColumbiaAges 18 years+ - NCT05801614Recruiting
Tested diet to help control glucose in early type 2 diabetes
This study tests whether carbohydrate or calorie restriction can help normalize blood sugar levels in people with relatively early type 2 diabetes. It may help those whose diabetes control is not yet fully under control but who do not have major recent heart problems.
StockholmAges 24–70
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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.