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
- NCT06953791RecruitingPhase 2
Comparing two treatments for Crohn's disease flare-ups
This trial compares a steroid called prednisolone to a special diet (aCDED with PEN) for treating Crohn's disease flare-ups. It aims to see which approach helps improve quality of life.
TübingenAges 18 years+ - NCT06955975Recruiting
Pectin supplement for frailty in older adults
This study tests if daily pectin, a fiber found in fruits, can improve strength and health in older adults who are frail or pre-frail. It compares pectin to a placebo over time.
Nottingham, NottinghamAges 65 years+ - NCT06939231Recruiting
Supporting UCD students toward healthier eating
This trial tests ways to help UCD students build healthier and more sustainable eating habits. It uses a 'living lab' approach, meaning you'll help shape and test real-world changes on campus.
DublinAges 18–30 - NCT06940596Recruiting
Comparing diets and therapies for irritable bowel syndrome
This study compares different dietary and behavioral treatments to find out which works best for different people with irritable bowel syndrome (IBS). You'll be asked to follow a specific treatment program to see how it affects your symptoms.
Melbourne, VictoriaAges 18 years+ - NCT06916208Recruiting
Capsinoid supplement study for obese teens
This study tests whether a supplement called capsinoid can help activate brown fat in teenagers with obesity. Brown fat is a type of body fat that burns calories, so this could be a new way to help with weight management.
Palavas-les-FlotsAges 11–18 - NCT06921356Recruiting
Grocery delivery plus lifestyle program for high blood pressure and diabetes
This study tests whether a program that delivers healthy groceries along with lifestyle coaching can help people with high blood pressure and type 2 diabetes manage their conditions better. If you qualify, you'll receive support to improve your eating habits and health.
Baltimore, MarylandAges 18 years+ - NCT06913985Enrolling by invitation
Study on heart health in teens and young adults
This study looks at how fitness, sleep, and diet during childhood affect heart and metabolic health in teenagers and young adults. It uses data and samples already collected from participants in earlier studies.
Little Rock, ArkansasAges 13–21 - NCT06920940Recruiting
Ketogenic diet for bipolar disorder in teens
This study tests whether a ketogenic diet (a very low-carb, high-fat diet) can help teens with bipolar disorder who are currently feeling depressed or have mixed symptoms. Participants will receive medical and dietitian support while trying the diet for up to 12 weeks.
Los Angeles, CaliforniaAges 12–21 - NCT06907862Recruiting
SWITCH trial: swapping processed soy foods in a heart-healthy diet
This study tests whether swapping highly processed soy foods for less processed soy foods, as part of a heart-healthy diet, can improve blood pressure, blood sugar, and weight in adults with obesity and high blood pressure. It may be a good option if you have type 2 diabetes and are already on stable medications.
Toronto, OntarioAges 18 years+ - NCT06898918Enrolling by invitation
Mothers' feeding habits and kids' eating and tooth health
This study looks at how mothers control their child's eating, how the child eats, and whether it relates to early childhood cavities. It may help families understand what affects their preschooler's dental health.
CairoAges 3–5 - NCT06881277Recruiting
Smartphone app for healthy eating and activity after pregnancy
This trial tests a smartphone app called PRIMI to help new mothers who have moved to Sweden eat well and stay active. If you are a first-generation migrant woman who gave birth within the last 6 months, you may be able to join.
Linköping, Östergötland CountyAges 18 years+ - NCT06857929Recruiting
Nutrition study for metabolic syndrome
This study tests whether a personalized nutrition plan can improve health and lower the risk of chronic diseases like diabetes and heart disease in middle-aged adults with metabolic syndrome.
Madrid, MadridAges 30–50 - NCT06860880Recruiting
Personalized program to fight cancer-related fatigue
This trial tests a personalized supportive care program that combines exercise, nutrition, and coaching to help reduce fatigue in people with certain slow-growing lymphomas. It aims to improve energy and quality of life.
Chapel Hill, North CarolinaAges 18 years+ - NCT06860425Recruiting
Mobile app to help cancer patients with diet and activity
This study tests a mobile app designed to help cancer patients manage their diet, nutrition, and physical activity during and after radiation treatment. The app sends reminders and tips to support healthy habits, which may help you feel better and stay stronger during treatment.
The Bronx, New YorkAges 18 years+ - NCT06848491Recruiting
Smartphone weight loss programs for young adult cancer survivors
This study tests two different smartphone-based programs to help young adult cancer survivors lose weight. Participants are randomly assigned to one of two programs and use an app to track their progress.
Chapel Hill, North CarolinaAges 18–39 - NCT06845046Recruiting
Improving muscle health for veterans with HIV
This study tests a way to help veterans with HIV build stronger muscles. It may help improve your strength and overall health.
Nashville, TennesseeAges 20–80 - NCT06839248Recruiting
Fasting before procedures with GLP-1 meds
This study looks at whether people taking weekly GLP-1 medications (like Ozempic or Wegovy) should follow standard fasting rules or a 24-hour clear liquid diet before a procedure. The goal is to find the safest way to prepare.
Melbourne, VictoriaAges 18 years+ - NCT06845501Recruiting
Purine supplements for AICA-ribosiduria
This trial tests whether adding purines (natural substances found in foods) to your diet can help treat AICA-ribosiduria, a rare genetic condition. It may be a safe and simple therapy option for you.
Saint-EtienneAges 3 years+ - NCT06826014Recruiting
Cancer prevention registry and biorepository study
This study creates a registry of people who have had certain cancer screenings or have conditions linked to cancer risk. Participants donate blood, urine, and cheek swab samples and allow their health records to be followed for five years to help future cancer research.
Bryan, TexasAges 18 years+ - NCT06828367Enrolling by invitation
Online nutrition program for families with young kids
This study tests an online nutrition education program to help families of young children eat more like a Mediterranean diet. It aims to see if the program improves healthy eating habits in kids aged 18 to 36 months.
Pamplona, NavarreAges 1.5 years–3 years - NCT06831955RecruitingPhase 2
Lifestyle program to boost chemo before breast cancer surgery
This trial tests whether a structured lifestyle program (diet and exercise) can make standard chemotherapy before surgery work better for triple-negative breast cancer. It looks at how the program affects your body’s response to treatment and your overall health.
AntwerpAges 18 years+ - NCT06827366Recruiting
Lifestyle study for people at high risk of colorectal cancer
This study tests a lifestyle program for people who are at high risk for colorectal cancer but have not been diagnosed. The goal is to see if healthy changes can help lower your risk over one year.
Lyon, FranceAges 35–74 - NCT06824974Recruiting
Time-restricted eating for liver disease or cancer
This study tests whether combining time-restricted eating with healthy eating helps people with metabolic liver disease, cirrhosis, or early-stage liver cancer. If you are overweight and currently fast less than 12 hours at night, this diet approach might improve your health.
La Jolla, CaliforniaAges 18 years+ - NCT06814509Recruiting
HOPE program for pregnant women
This study tests a program called HOPE that helps pregnant women get the support they need for a healthy pregnancy. It is designed to make prenatal care more fair and accessible.
Corning, ArkansasAges 16–44
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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.