Clinical trials
Diet clinical trials
Below are recruiting diet clinical trials, each written for real people, not researchers. We’re tracking 654 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07564674Recruiting
How Your Body Processes Broccoli Extract Supplements
This study tests how well your body absorbs and uses broccoli extract supplements. Researchers want to understand if these supplements deliver their plant-based benefits effectively, which could help improve future supplement design.
Corvallis, OregonAges 18–60 - NCT06459661Recruiting
Bowel movement tracking study for healthy adults
This study tracks bowel movements in healthy people to learn more about normal gut function. It involves attending an in-person session at a university in Leeds or Sheffield.
LeedsAges 18–60 - NCT06433115Recruiting
Lean beef and your heart and gut health trial
This study tests how eating lean beef for 4 weeks affects your heart health and the bacteria in your gut. If you qualify, you'll be asked to follow a consistent diet and activity routine during the study.
Columbia, MissouriAges 18–45 - 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+ - NCT06794931Recruiting
Mediterranean diet for advanced colorectal cancer during chemo
This study tests whether a modified Mediterranean diet can help people with advanced colorectal cancer who are starting chemotherapy. It aims to see if the diet improves treatment side effects and quality of life.
Vimercate, MBAges 18–80 - NCT06565676Recruiting
Whey powder bread for blood sugar
This trial tests whether eating bread made with whey powder can help control your blood sugar levels. If you are a healthy adult without any chronic health issues, this study might show you how a simple change to your diet can affect your glucose.
KayseriAges 19–35 - NCT06438588Recruiting
Fasting-mimicking diet to reduce immunotherapy side effects
This trial tests whether a special low-calorie 'fasting-mimicking' diet can reduce side effects from common immunotherapy drugs for advanced cancer. If you're on a PD-1, PD-L1, or CTLA-4 inhibitor, this diet might help you feel better during treatment.
Jacksonville, FloridaAges 18 years+ - NCT05746442Recruiting
Interactive quitting messages for Khmer-speaking people with HIV
This trial tests whether interactive, personalized messages can help people who smoke cigarettes quit. It is designed for Khmer-speaking adults living with HIV and aims to support a quit attempt within about two weeks.
Phnom PenhAges 18 years+ - NCT05695040Recruiting
Diet workshop after bariatric surgery
This study tests whether a structured diet workshop, held about 15 days after bariatric (weight-loss) surgery, helps patients with their post-surgery eating plans. You may be invited to join the workshop if you are scheduled for surgery and can attend as required.
Clermont-FerrandAges 18 years+ - NCT05124886Recruiting
Study gut–kidney link in people with bowel or stone problems
This study looks at how problems in the gut can lead to kidney stone risk, especially in people with inflammatory bowel disease or after certain weight-loss surgery. Your participation may help researchers understand the gut–kidney connection and identify why stones happen.
New York, New YorkAges 18–80 - NCT02792270Recruiting
Calorie reduction during pre-surgery radiation for leg sarcoma
This trial studies whether eating fewer calories before surgery, along with standard pre-surgery radiation, can improve outcomes for adults with leg soft-tissue sarcoma. If you qualify, you’d follow a calorie-reduction plan and then proceed to surgical removal of the tumor.
Boston, MassachusettsAges 18 years+ - NCT06654219Recruiting
Clear liquids before endoscopy for patients on GLP-1 meds
This study tests whether drinking only clear liquids before an upper endoscopy can reduce leftover stomach contents in people taking GLP-1 medications (like Ozempic or Mounjaro). It may help make the procedure safer.
Houston, TexasAges 18 years+ - NCT06444568Recruiting
Ketogenic diet for memory loss in older adults
This trial tests whether a modified ketogenic diet (high in healthy fats, low in carbs) can help people with mild memory problems. It is for older adults who have been diagnosed with a certain type of memory impairment and want to see if diet changes can support brain health.
AnkaraAges 65–80 - NCT07698158Recruiting
Growing Well Study: healthy growth study for young children
This study looks at how children aged 6 months to 4 years grow and develop. It involves families in Leeds, Doncaster, or East London. Researchers want to understand what supports healthy growth in early childhood.
Doncaster, West YorkshireAges 6 months–4 years - NCT06431048Enrolling by invitation
Does pausing tube feeding affect recovery?
This study looks at whether briefly pausing tube feedings during certain procedures (like placing a tracheostomy or PEG tube) affects patient outcomes. The goal is to find out if it's safe to continue feeding without stopping, which might prevent delays in nutrition.
Columbia, MissouriAges 18 years+ - NCT06849817Recruiting
Protein and exercise for postmenopausal women's health
This study tests whether adding more protein to your diet along with regular exercise can improve health and well-being in women over 50 who have gone through menopause.
Fayetteville, ArkansasAges Any age - NCT07490782Recruiting
Nutrition study for college students with depression
This trial tests whether changes in diet can help improve mild to moderate depression in college students. If you are currently getting treatment or are open to it, you may be able to join.
La Jolla, CaliforniaAges 18 years+ - NCT07513298Recruiting
Video Game Exercise for Overweight Children's Fitness
This study tests whether playing specially designed Wii video games that involve aerobic exercise can help overweight children improve their reaction time and lung function. The goal is to see if gaming-based exercise can be an engaging way for kids to get healthier.
CairoAges 10–15 - NCT07194993Recruiting
Testing protein needs in adults with PKU
This study looks at how much protein people with PKU need. If you have PKU and are 18 or older, you may help researchers understand your body's protein needs better.
Atlanta, GeorgiaAges 18 years+ - NCT05651386Recruiting
Six-food elimination diet for meal-related stomach distress
This trial tests whether removing six common food groups helps people whose stomach symptoms get worse after meals. You would follow a structured diet plan and answer questionnaires to see if your symptoms improve.
LeuvenAges 18–70 - NCT06682390Recruiting
Race and diet study for men on hormone therapy
This study explores how race affects nutrition for men receiving hormone therapy (ADT) for prostate cancer. It may help researchers understand if different dietary approaches are needed based on race.
Los Angeles, CaliforniaAges 18 years+ - NCT07583186Recruiting
How Eating More Eggs During Pregnancy Affects Baby's Brain Development
This study looks at whether pregnant women who eat more eggs can help their babies' brain development. Researchers will follow you and your baby from pregnancy through the first year of life to see if increased egg consumption makes a difference.
Kansas City, KansasAges 18 years+ - NCT05403632Recruiting
Mediterranean diet during pregnancy to support baby development
This study looks at whether eating a Mediterranean-style diet during early pregnancy can support healthy development of the baby. You may be able to join if you’re in your first trimester and willing to deliver at the study hospital units.
Agropoli, SAAges 18–50 - NCT06716034Recruiting
Mood and diet pilot trial for teens with depression
This study tests whether a special diet can help improve mood in teens with depression. You and your parent will work together online with the study team.
Toronto, OntarioAges 11–17
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Common questions
- Are there clinical trials for diet?
- Yes. Clin2 currently lists 654 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.