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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Dietary Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

An Open-Label, Two-Arm Pilot Study of the Tolerability, Consumer Acceptability, and Exploratory Well-Being Outcomes of a Multi-Ingredient Protein Formula in Two Flavors in Healthy Adults

NCT07827014
View directory record Official record
Conditions
Healthy
Interventions
Vanilla Protein Formula, Chocolate Protein Formula
Dietary Supplement
Lead sponsor
Qualia Life Sciences
Industry
Eligibility
21 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Carlsbad, California
Source: ClinicalTrials.gov public record
Updated Sep 17, 2026 · Synced Sep 25, 2026, 11:57 AM EDT
Completed Not applicable Interventional

I Can Do This! Managing My Diabetes

NCT06695533
View directory record Official record
Conditions
Diabetes
Interventions
Diabetes self management workbook
Behavioral
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Sep 25, 2026, 11:57 AM EDT
Recruiting Not applicable Interventional

Capturing Food Intake in Patients Undergoing Radiation Therapy for Cancer

NCT07682714
View directory record Official record
Conditions
Cancer, Radiation Therapy, Dietary Intake
Interventions
Mobile food record using myCircadian Clock app
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Sep 25, 2026, 11:57 AM EDT
Not listed Not applicable Interventional

Effect of Diet on Gulf War Illness

NCT02881944
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Low FODMAP Diet, High FODMAP Diet
Behavioral
Lead sponsor
Ashok Tuteja
Federal
Eligibility
25 Years to 90 Years
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 31, 2018 · Synced Sep 25, 2026, 11:57 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Microbiome, Bile Acids, and Notch in Barrett's Esophagus (BE)

NCT05524844
View directory record Official record
Conditions
Barrett Esophagus, Esophageal Adenocarcinoma
Interventions
Sample Collection, Endoscopy results, Dietary questionnaire
Other
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 10, 2025 · Synced Sep 25, 2026, 11:57 AM EDT
Completed Not applicable Interventional

Clinical Trial to Decrease Length of Stay in Infants With Neonatal Abstinence Syndrome With an Exclusive Human Milk Diet

NCT04508348
View directory record Official record
Conditions
Neonatal Abstinence Syndrome
Interventions
Human Milk, Standard of Care
Other
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
Up to 48 Hours
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
2
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jul 7, 2025 · Synced Sep 25, 2026, 11:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Age and Weight Loss on Inflammation and Iron Homeostasis

NCT01636635
View directory record Official record
Conditions
Obesity, Aging
Interventions
Calorie Restriction
Other
Lead sponsor
Tufts University
Other
Eligibility
18 Years and older · Female only
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 15, 2015 · Synced Sep 25, 2026, 11:57 AM EDT
Completed Not applicable Interventional Results available

Dissemination of the Look Ahead Weight Management Treatment in the Military

NCT02063178
View directory record Official record
Conditions
Overweight, Obesity
Interventions
Phone-based sessions (28 total) on a structured schedule, Phone-based sessions upon request, Weight self-monitoring, Dietary and physical activity self-monitoring, Scheduled tailored interventionist feedback, Dietary goals, Meal replacements, Physical activity goals, Toolbox, Challenges, Tailored interventionist feedback upon request
Behavioral
Lead sponsor
University of Tennessee
Other
Eligibility
18 Years and older
Enrollment
248 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Feb 27, 2019 · Synced Sep 25, 2026, 11:57 AM EDT
Completed Not applicable Interventional Results available

Using Mobile Technology to Improve Self-Regulation

NCT03774433
View directory record Official record
Conditions
Self-regulation, Binge Eating, Smoking
Interventions
Laddr
Behavioral
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years to 50 Years
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Aug 23, 2021 · Synced Sep 25, 2026, 11:57 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Vitamin D and Omega-3 Hypertension Trial (VITAL Hypertension)

NCT01653678
View directory record Official record
Conditions
Hypertension
Interventions
Vitamin D-3 (cholecalciferol), 2000 IU, Omega-3 fatty acids (fish oil), Vitamin D placebo, Fish oil placebo
Dietary Supplement · Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
50 Years to 99 Years
Enrollment
25,875 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Sep 25, 2026, 11:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Changes in Plasma Amino Acid Appearance After Adding Bacillus Coagulans GBI-30, 6086 to Milk Protein Concentrate

NCT05313178
View directory record Official record
Conditions
Protein Malabsorption
Interventions
Bacillus Coagulans GBI-30, 6086
Dietary Supplement
Lead sponsor
Lindenwood University
Other
Eligibility
50 Years to 70 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 16, 2024 · Synced Sep 25, 2026, 11:57 AM EDT
Completed Not applicable Interventional Results available

Tai Chi Mind-Body Therapy for Fibromyalgia

NCT00515008
View directory record Official record
Conditions
Fibromyalgia
Interventions
Tai Chi Intervention, Control Intervention
Behavioral
Lead sponsor
Tufts Medical Center
Other
Eligibility
21 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 7, 2016 · Synced Sep 25, 2026, 11:57 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Does Dapagliflozin Promote Favorable Health Benefits That Are Independent Of Weight Loss?

NCT02520518
View directory record Official record
Conditions
Weight Loss
Interventions
Dapagliflozin, Placebo, Weight maintenance, Ad libitum dietary intake, Dietary restriction
Drug · Behavioral
Lead sponsor
Christopher Bell
Other
Eligibility
18 Years to 65 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 2, 2019 · Synced Sep 25, 2026, 11:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Green Tea Confections For Managing Postprandial Hyperglycemia-Induced Vascular Endothelial Dysfunction

NCT01857258
View directory record Official record
Conditions
Hyperglycemia, Cardiovascular Disease
Interventions
Green Tea Concentrate
Dietary Supplement
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 30 Years · Male only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 15, 2017 · Synced Sep 25, 2026, 11:57 AM EDT
Completed Not applicable Interventional

Healthy Heart Habits-2

NCT06440278
View directory record Official record
Conditions
Acute Coronary Syndrome
Interventions
Behavioral Activation for Health and Depression (BA-HD), Enhanced Usual Care
Behavioral · Other
Lead sponsor
The Miriam Hospital
Other
Eligibility
18 Years to 80 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
3
States / cities
Minneapolis, Minnesota • Greenville, North Carolina • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Sep 25, 2026, 11:57 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Assessing the Influence of Habitual Beef Intake on Key Molecular Markers of Brain Health

NCT07623785
View directory record Official record
Conditions
Healthy Aging, Brain Health, Cardiometabolic Health, Normal Aging, Cognitive Decline Prevention in Robust Older Adults
Interventions
Lean Beef, Non-Beef Control
Other
Lead sponsor
South Dakota State University
Other
Eligibility
65 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Brookings, South Dakota
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 25, 2026, 11:57 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

The Effect of Bariatric Surgery on Metabolism, the Metabolome and Microbiome in Patients With Type 2 Diabetes

NCT02762708
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Obesity
Interventions
Roux-en-Y Gastric Bypass (RYGB), Caloric Restriction, Exendin-9,39, Normal Saline
Procedure · Behavioral · Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
20 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 2, 2022 · Synced Sep 25, 2026, 11:57 AM EDT
Completed Not applicable Interventional

Impact of a Personal Digital Assistant (PDA) - Based Dietary Adherence Intervention on Interdialytic Weight Gain and Blood Pressure in Hemodialysis Patients

NCT00447408
View directory record Official record
Conditions
End-Stage Renal Disease
Interventions
Standard hemodialysis dietary instruction, Behavioral counseling plus PDA-based self-monitoring of diet
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
21 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 27, 2010 · Synced Sep 25, 2026, 11:57 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Postprandial Nutrient Homeostasis Before and After Weight Loss Induced by Low-calorie Diet or RYGB

NCT03091725
View directory record Official record
Conditions
Obesity
Interventions
Roux-en-Y gastric bypass surgery, Low-calorie diet
Procedure · Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
25 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Sep 25, 2026, 11:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Grapefruit or Grapefruit Juice on Anthropometry, Dietary Intakes, Appetite, and Metabolic Profile in Overweight and Obese Young and Middle-Aged Adults

NCT00581074
View directory record Official record
Conditions
Obesity
Interventions
diet (grapefruit or grapefruit juice)
Behavioral
Lead sponsor
Vanderbilt University
Other
Eligibility
21 Years to 50 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 26, 2011 · Synced Sep 25, 2026, 11:57 AM EDT
Recruiting Not applicable Interventional

Acceptance and Commitment Therapy for Patients Undergoing Coronary Artery Bypass Graft Surgery

NCT06207318
View directory record Official record
Conditions
Coronary Artery Disease, Vascularization
Interventions
Acceptance and commitment therapy
Behavioral
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Aug 7, 2025 · Synced Sep 25, 2026, 11:57 AM EDT
Withdrawn Not applicable Interventional

A Crohn's Disease Diet to Reduce Symptoms of Crohn's Disease

NCT01897090
View directory record Official record
Conditions
Crohn's Disease
Interventions
Elimination Diet, Dietary Guidelines for Americans
Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 4, 2016 · Synced Sep 25, 2026, 11:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Potatoes on Markers of Cardiometabolic Health

NCT03495284
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Cardiovascular Diseases
Interventions
Potato-based side dish, Refined grain-based
Dietary Supplement
Lead sponsor
Penn State University
Other
Eligibility
25 Years to 75 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 17, 2023 · Synced Sep 25, 2026, 11:57 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

The Effect of Sugar Sweetened and Diet Beverages Consumed as Part of a Weight-Maintenance Diet on Fat Storage

NCT02252952
View directory record Official record
Conditions
Focus: Understanding the Obesogenic Potential of Sugars and Non-caloric Sweeteners
Interventions
Beverage Consumption
Other
Lead sponsor
Rippe Lifestyle Institute
Industry
Eligibility
20 Years to 50 Years
Enrollment
99 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2013
U.S. locations
1
States / cities
Celebration, Florida
Source: ClinicalTrials.gov public record
Updated Dec 15, 2014 · Synced Sep 25, 2026, 11:57 AM EDT