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
- 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+ - NCT05962190Recruiting
Short-term extra fat intake to study liver metabolism
This study tests what happens to the liver and fat metabolism when you eat extra fat for a short time. It may help researchers understand how diet affects liver function and metabolism in otherwise stable adults.
OxfordAges 18–65 - 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 - NCT06705738Recruiting
Mediterranean diet and olive compound for mild memory loss
This study tests whether a Mediterranean diet combined with a natural compound found in extra virgin olive oil (oleocanthal) can help people with mild memory problems (mild cognitive impairment). It aims to see if this combination can slow down or improve memory decline.
Thessaloniki, ThessalonikiAges 60–85 - 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+ - NCT05878912Recruiting
Obesity and weight loss in certain heart failure patients
This study looks at how higher body weight and weight loss affect people who have heart failure with preserved pumping strength. It uses heart scans to measure how the heart and body change, which may help guide future treatment plans.
OxfordAges 18–85 - NCT07844668Enrolling by invitation
Gut health, diet, and quality of life in CVID
This study looks at the gut microbiome (the bacteria in your digestive system), diet, and quality of life in people with CVID, a condition that affects the immune system. It compares those who receive immunoglobulin therapy (antibody treatment) with those who do not, to see if there are differences that might help improve care.
Ninove, BelgieAges 18 years+ - NCT07834489Recruiting
Anti-inflammatory diet and exercise for teen girls' reproductive health
This study tests whether a 16-week anti-inflammatory diet and physical activity plan can improve reproductive health in teenage girls. It may help by reducing inflammation and supporting hormonal balance.
Poznan, Greater Poland VoivodeshipAges 14–19 - NCT07829484Recruiting
Exercise and olive oil for fall prevention in older adults
This study tests whether a home exercise program combined with daily extra virgin olive oil can reduce the risk of falls in older adults who are frail or at high risk of falling. It may help improve strength, balance, and overall health.
Pamplona, NavarreAges 75 years+ - NCT07833007Recruiting
Dietary changes for metabolic syndrome in teens with familial Mediterranean fever
This trial tests whether limiting certain foods can improve metabolic syndrome (a group of conditions like high blood sugar and extra belly fat) in teenagers who also have familial Mediterranean fever (a genetic condition causing repeated fevers and inflammation). It may help manage both conditions together.
Giza, DokkiAges 13–17 - NCT06492200Recruiting
High-Fiber Diet for Rheumatoid Arthritis
This study tests whether eating more high-fiber foods can improve rheumatoid arthritis symptoms by changing the bacteria in your gut. You would follow a special diet and have your disease activity monitored.
WürzburgAges 18–99 - NCT07801716Recruiting
Low-calorie diet before liver surgery
This trial tests whether eating a low-calorie diet for 7 days before liver surgery helps reduce complications after the operation. It may help you recover more easily after surgery.
LundAges 18 years+ - NCT07792837Recruiting
Online intuitive eating program for pregnant women with obesity
This study tests an online program that helps pregnant women with obesity learn to eat intuitively, which means listening to their body's hunger and fullness signals instead of dieting. The goal is to support their well-being during pregnancy.
San Diego, CaliforniaAges 18 years+ - NCT07793487Enrolling by invitation
Testing a special dairy drink for gut and metabolic health
This study tests whether a special dairy product can help improve symptoms in people with irritable bowel syndrome or early signs of metabolic syndrome. Participants must be at a healthy weight and not have other major health conditions or be on certain diets.
WarsawAges 18 years+ - NCT07780708Recruiting
Study of diet quality in older adults
This study looks at the eating habits and diet quality of older adults who use food assistance programs. It involves completing surveys or interviews to help researchers understand how to improve nutrition for this group.
Los Angeles, CaliforniaAges 60 years+ - NCT06558955Recruiting
Preventing baby tooth decay with text support for new moms
This study tests a program that uses text messages and online support to help new moms prevent cavities in their baby's teeth. It provides tips and support from other parents to make dental care easier for your little one.
SingaporeAges 21 years+ - NCT06074250RecruitingPhase 2/Phase 3
Pregnancy, mood, and gut health study
This study tests whether a nutritional supplement can help prevent depression and anxiety during and after pregnancy. It looks at how the mother's gut bacteria may influence mood.
Toronto, OntarioAges 18–43 - NCT07757087RecruitingPhase 1
Study on energy use after weight loss
This study tests a new medicine to see how it affects the body's energy use after losing weight. It compares the medicine to a low-calorie diet or a placebo (a pill with no active ingredient) in adults with obesity.
Aarhus NAges 18 years+ - NCT07729436Recruiting
Healthy eating study for online food pantry users
This study tests a program to help people make healthier choices when ordering from an online food pantry. It may help if you regularly use an online food pantry and are interested in improving your diet.
Chicago, IllinoisAges 18 years+ - NCT07710274Recruiting
Personalized Program for Insulin Resistance in Metabolic Syndrome
This pilot study tests a personalized program called PRISM to help improve how your body responds to insulin. If you have metabolic syndrome (a cluster of conditions like large waist size, high blood pressure, or high blood sugar) and insulin resistance, the study will use a continuous glucose monitor, smart ring, and food logging app to give you tailored feedback.
SingaporeAges 21–70 - 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 - NCT07692646Recruiting
Fasting's effect on fat burning and energy in cells
This study looks at how fasting changes the way your body burns fat and how cells produce energy. If you are a healthy adult of normal weight or living with obesity, you may help researchers understand the effects of fasting on metabolism.
CopenhagenAges 18–40 - NCT06051318Recruiting
Diet and gut microbiome effects on blood sugar in healthy adults
This study looks at how your gut bacteria and the foods you eat affect your blood sugar after meals. You'll wear a small sensor to track your blood sugar for 10 days and provide stool samples.
Florianópolis, Santa CatarinaAges 18–60 - 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+
Hear when a new Diet trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
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.