Clinical trials
Diet clinical trials
Below are recruiting diet clinical trials, each written for real people, not researchers. We’re tracking 650 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07488013Recruiting
Early Regular Diet vs Clear Fluids After Colon Surgery
This study compares starting a regular diet soon after colon surgery versus a traditional clear-liquid diet. It aims to see which helps your bowel connection heal better and get you home sooner.
CairoAges 18–60 - NCT07151105Recruiting
Vitamin C for gut health in adults with obesity
This trial tests whether taking vitamin C supplements helps improve gut barrier function in adults with obesity. You'll follow a low-fruit-and-vegetable diet for two, two-week periods.
Columbus, OhioAges 18–50 - NCT07473791Recruiting
Social media diet study for university students
This trial tests whether reducing social media use can improve psychological well-being in university students. You will be asked to limit your social media time and track your screen usage over 4 weeks.
Gümüşhane, Gümüşhane ProvinceAges 17–25 - NCT07736651Recruiting
Anti-inflammatory diet and physical therapy for children with psoriasis
This trial tests if adding a gluten-free, low-histamine anti-inflammatory diet, and in some cases physical therapy, helps children with mild-to-moderate plaque psoriasis. It aims to see if these lifestyle changes can improve skin symptoms when combined with usual treatment.
Giza, Ad DokiAges 6–17 - NCT07730970Recruiting
Deep muscle relaxation and diet for vNOTES hysterectomy
This study tests whether deep muscle relaxation and a special low-residue diet improve the surgical view during vNOTES hysterectomy for non-cancer conditions. It aims to make the procedure safer and easier for the surgeon.
Istanbul, KARTALAges 18 years+ - NCT06329622RecruitingPhase 3
Does Ketosteril help muscle loss in kidney disease?
This study tests whether a medicine called Ketosteril can improve muscle strength and function in people with moderate to severe chronic kidney disease (CKD) who also have sarcopenia (age-related muscle loss).
ShanghaiAges Any age - NCT06836479Recruiting
Testing cultural meals for Asian Americans with type 2 diabetes
This study tests whether specially prepared meals that match your cultural background can help manage blood sugar levels. You'll wear a small sensor to track your glucose for 30 days and eat tailored meals for one week.
Stanford, CaliforniaAges 18 years+ - NCT07728032Recruiting
How diet and medicine affect gut health in PKU children
This study looks at how a phenylalanine-restricted diet or certain PKU medicines affect gut health in children with PKU. It also includes healthy siblings or household members as a comparison group.
Birmingham, BirminghamAges 3–17 - NCT07702799Recruiting
Low-fiber diet vs enema before laparoscopic endometrial cancer surgery
This trial compares two colon preparation methods — a low-residue diet versus a rectal enema — before laparoscopic surgery for endometrial cancer. The goal is to find which approach is easier and works better for bowel preparation.
IstanbulAges 18–90 - NCT03845036Recruiting
Diet and exercise study for leg circulation problems
This study looks at how diet changes and an exercise program may improve walking and leg symptoms in people with peripheral artery disease (PAD). You may be eligible if you have a history of claudication (leg pain with walking) and tests or treatment history show PAD.
Oklahoma City, OklahomaAges 40 years+ - NCT03900286Recruiting
Testing a low-calorie diet for partial fat loss diabetes
This trial studies whether a low-calorie (low energy) diet can improve diabetes control in adults with familial partial lipodystrophy. It likely helps by changing how your body handles blood sugar and fat use, but you must meet specific safety and eligibility checks.
CambridgeAges 18–99 - NCT07702149Recruiting
Diet for Behcet's disease patients with ringing in the ears
This trial tests whether a special diet can help ringing in the ears (tinnitus) in people with Behcet's disease who also have obesity. The goal is to see if dietary changes reduce tinnitus symptoms.
Giza, DokkiAges 40–55 - NCT06814626RecruitingPhase 3
Nutrition therapy for muscle loss in cirrhosis with fluid buildup
This trial tests whether a special nutrition plan can help treat muscle loss in people with liver cirrhosis who also have fluid buildup that doesn't improve with standard treatment. It aims to improve strength and outcomes after a procedure to place a shunt in the liver.
PalermoAges 18–80 - NCT07361406Recruiting
SweetSpot: How non-nutritive sweeteners affect health
This study looks at how non-nutritive sweeteners (like the ones in diet sodas) affect your health. You'll follow a special diet for a few weeks, and researchers will check things like blood sugar and metabolism.
Wageningen, GelderlandAges 45–79 - NCT04121806Recruiting
Diet plan for active ulcerative colitis flare-ups
This trial studies whether a specific diet can improve symptoms and reduce inflammation during an active flare of ulcerative colitis. You may be eligible if you have documented active disease and can follow the study diet and medication rules.
Toronto, OntarioAges 18–75 - NCT04200391Recruiting
Low-carb diet study and how glucagon affects diabetes
This study tests whether very low-carbohydrate diets change glucagon response in adults with type 1 diabetes. It may help researchers understand how diet affects blood-sugar control in people using insulin pumps and continuous glucose monitors.
Boston, MassachusettsAges 18–40 - NCT04219709Recruiting
Study how ketosis affects brain function in adults with type 1 diabetes
This study tests whether a “ketosis” state changes brain function in adults with type 1 diabetes. You may be asked to follow specific diet/food delivery plans and use devices that track glucose, which could help researchers understand how metabolism affects the brain.
Boston, MassachusettsAges 18–40 - NCT04219956Recruiting
Low-sugar diet aims to reduce belly-surgery pain
This study tests whether a special diet low in polyamines (a food-related substance) can reduce pain after major abdominal surgery. It compares pain control while you use a patient-controlled morphine pump or take opioid tablets by mouth after surgery.
BrestAges 18 years+ - NCT04349059Recruiting
Diet pattern study for erections in young men
This trial tests whether changing your diet for a short study period affects erectile function. You may be asked to follow specific food rules and avoid sex- and lifestyle-related factors right before and during testing at the clinic.
The Bronx, New YorkAges 18–35 - NCT04735835Recruiting
Personalized diet testing using ZOE app and blood samples
This trial studies how different food compositions affect your body, using the ZOE testing program plus meals you eat and blood samples you collect. It may help you learn more about what foods work best for you, especially if you have a long-term health condition.
Needham, MassachusettsAges 18 years+ - NCT04761523Recruiting
Diet fat changes to help prevent pancreatitis coming back
This study looks at whether changing how much dietary fat you eat can lower the chance that pancreatitis returns. It focuses on people who have had pancreatitis more than once and are not already receiving specific meal guidance for a medical reason.
BudapestAges 14 years+ - NCT04943926Recruiting
Diet changes to help put type 2 diabetes into remission
This study tests whether specific dietary strategies can help people with type 2 diabetes reach remission (better blood sugar without ongoing high medication needs). You may be a good candidate if your diabetes is relatively recent, your weight is above a certain threshold, and your heart and other health conditions are stable.
Bergen, VestlandAges 24–70 - NCT04974593RecruitingPhase 3
Test breath testing to guide a lactose-free diet in IBS
This trial studies whether a breath test (hydrogen/methane lactose testing) can predict who with IBS will improve on a lactose-free diet. If you have moderate-to-severe IBS and regularly eat lactose-containing foods, the test result may help tailor your diet approach.
Jette, Brussels CapitalAges 18–75 - NCT05097872Recruiting
Diet trial for IBS with non-constipation symptoms
This study tests whether a specific diet plan can improve symptoms in people with IBS that is not constipation (IBS-D or IBS-M). If you qualify, you’ll complete symptom questionnaires and follow the study diet for the trial period to see if symptoms improve.
LeuvenAges 18–70
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Common questions
- Are there clinical trials for diet?
- Yes. Clin2 currently lists 650 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.