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Showing 1–24 of 28 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: High Protein and Low Fiber Diet Clear all
Completed Not applicable Interventional

UC Cohort - The Influence of Diet on Gut Microbiotas

NCT04933162
View directory record Official record
Conditions
Ulcerative Colitis
Interventions
High Protein and Low Fiber Diet, Low Protein and High Fiber Diet
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 24, 2023 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Dietary Impact on Intestinal Sulfate Metabolism

NCT05333900
View directory record Official record
Conditions
Healthy Nutrition
Interventions
Plant-Based Diet then animal-based diet, Animal-based diet then plant-based diet
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 80 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 4, 2023 · Synced Sep 27, 2026, 2:42 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Smart Underwear to Measure Diet-Induced Hydrogen Sulfide Production

NCT06802276
View directory record Official record
Conditions
Hydrogen Sulfide, Gastrointestinal Microbiome
Interventions
High Cysteine Diet, Low Cysteine Diet
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

High Quality Protein for Assisting With Weight Loss

NCT03085511
View directory record Official record
Conditions
Obesity
Interventions
Egg breakfast (EB), Weight Loss Counseling, Weight Loss Diet, Cereal Breakfast (CB)
Behavioral
Lead sponsor
Texas Tech University
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated May 29, 2019 · Synced Sep 27, 2026, 2:42 AM EDT
Recruiting Not applicable Interventional

Study of Nutrition and Exercise in Adults Hospitalized for Treatment of Acute Lymphoblastic Leukemia (ALL)

NCT06785324
View directory record Official record
Conditions
Philadelphia Chromosome Negative, B Cell Acute Lymphoblastic Leukemia (B-ALL), B-ALL
Interventions
Nutrition Intervention, Exercise intervention
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 18, 2025 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Phase 1 Interventional

Low Antioxidant Diet in Controlling Cachexia in Patients With Oropharyngeal Cancer Receiving Chemotherapy and Radiation Therapy

NCT00486304
View directory record Official record
Conditions
Cachexia, Head and Neck Cancer, Weight Changes
Interventions
ADD, Placebo
Other
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 17, 2012 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Small Bowel Microbiota Characterization in Healthy Individuals Before and After Consumption of a Western Diet

NCT03266536
View directory record Official record
Conditions
Small Intestine Bacteria
Interventions
Western diet
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 3, 2022 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional

Efficacy and Safety of the DASH Diet in Adults With Moderate Chronic Kidney Disease: Pilot Study

NCT02059811
View directory record Official record
Conditions
Hypertension, Chronic Kidney Disease
Interventions
DASH Diet, Control Diet
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 2, 2014 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Healthy Families Healthy Forces Study

NCT02348853
View directory record Official record
Conditions
Overweight, Obesity
Interventions
Healthy Weight for Living (HWL), Current Best Practice (CBP)
Behavioral
Lead sponsor
Tufts University
Other
Eligibility
18 Years and older
Enrollment
308 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 4, 2020 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional Results available

Improving Diet and Exercise in Acute Lymphoblastic Leukemia (IDEAL Weight in ALL)

NCT02708108
View directory record Official record
Conditions
B Precursor Type Acute Leukemia
Interventions
Dietary Intervention, Activity and Exercise Intervention
Behavioral
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
10 Years to 21 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 27, 2023 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional

Ketogenic Diet to Improve Neuro-recovery

NCT03509571
View directory record Official record
Conditions
Spinal Cord Injuries
Interventions
Ketogenic Diet, Standard Diet
Other
Lead sponsor
Ohio State University
Other
Eligibility
19 Years to 60 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Metabolic Effects of Different Weight Loss Diets

NCT00422630
View directory record Official record
Conditions
Metabolic Syndrome X, Obesity, Insulin Resistance, Hypertension, Diabetes
Interventions
The DASH diet, The low glycemic Index Diet, Reduced calorie American Diet
Behavioral
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 45 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 12, 2011 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional

Facts-Up-Front Versus Traffic-Light Food Labels

NCT01626729
View directory record Official record
Conditions
Food Labeling
Interventions
Traffic Light+, Facts Up Front+, No label control group
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
703 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 24, 2012 · Synced Sep 27, 2026, 2:42 AM EDT
Not listed Not applicable Interventional

UCLA Breast Cancer Survivor Health Promotion Research Study

NCT05113485
View directory record Official record
Conditions
Breast Cancer
Interventions
Diabetes Prevention Program-based lifestyle change intervention (DPP), Highly Microbiota-Accessible Foods (HMAFs) intervention
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
50 Years to 75 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 10, 2022 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Resistant Starch Insulin Sensitivity Trial

NCT01027325
View directory record Official record
Conditions
Healthy, Cardiovascular Disease, Atherogenic Dyslipidemia, Insulin Resistance
Interventions
Dietary Intervention
Other
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
20 Years and older
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
2
States / cities
Berkeley, California • Oakland, California
Source: ClinicalTrials.gov public record
Updated Jan 13, 2013 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Diet Modulation of Bacterial Sulfur and Bile Acid Metabolism and Colon Cancer Risk

NCT03550885
View directory record Official record
Conditions
Colorectal Cancer
Interventions
High taurine and saturated fat diet, Low in taurine and saturated fat diet
Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
45 Years to 75 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Eggs on Postprandial Metabolism

NCT01351207
View directory record Official record
Conditions
Healthy
Interventions
Eggs
Other
Lead sponsor
Tufts University
Other
Eligibility
50 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 18, 2014 · Synced Sep 27, 2026, 2:42 AM EDT
Withdrawn Not applicable Interventional

Effect of a Plant Rich Diet on in People With Type 2 Diabetes and Obesity

NCT02977039
View directory record Official record
Conditions
Type 2 Diabetes Mellitus in Obese
Interventions
NDPR diet, USDA healthy eating diet
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 17, 2020 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of a High Protein, High Fiber Dietary Supplement on Weight and Fat Loss

NCT03057873
View directory record Official record
Conditions
Overweight
Interventions
High protein, high fiber dietary supplement, Placebo
Dietary Supplement
Lead sponsor
Beachbody
Industry
Eligibility
25 Years to 50 Years
Enrollment
206 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Obesity, Iron Regulation and Colorectal Cancer Risk

NCT03548948
View directory record Official record
Conditions
Colon Inflammation, Iron Malabsorption, Obesity, Diet Modification
Interventions
High heme iron diet, Low iron diet, Plant-based high non-heme iron diet
Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
55 Years to 70 Years · Female only
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 26, 2019 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Study to Evaluate the Influence of Diet on GI Health

NCT04783142
View directory record Official record
Conditions
Healthy
Interventions
High-fiber, low-protein diet, Low-fiber, high-protein diet
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
2
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 14, 2023 · Synced Sep 27, 2026, 2:42 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Comparison of Two Different Diets on Health Outcomes

NCT00269646
View directory record Official record
Conditions
Metabolic Syndrome X
Interventions
Low-carbohydrate and high-carbohydrate diets
Behavioral
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 64 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 17, 2009 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Phase 4 Interventional

A Very High Fiber Diet Versus a Low-carbohydrate Diet for Weight Loss

NCT01051674
View directory record Official record
Conditions
Obesity, Type 2 Diabetes
Interventions
High fiber vs. low-carbohydrate diets
Other
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years and older
Enrollment
173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Jun 30, 2014 · Synced Sep 27, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of a Modified Ketogenic-Mediterranean Diet on Alzheimer's Disease

NCT02984540
View directory record Official record
Conditions
Mild Cognitive Impairment, Insulin Resistance
Interventions
Low-Carbohydrate Diet, Low-Fat Diet
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
50 Years to 85 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 27, 2025 · Synced Sep 27, 2026, 2:42 AM EDT