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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Dietary Modification Clear all
Completed Not applicable Interventional

The Effect of a Low-fat Vegan Dietary Intervention on Intracellular Lipid, Insulin Sensitivity, and Glycemic Control in Type 2 Diabetes

NCT06106035
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Diabetes Mellitus Type 2 in Obese
Interventions
low-fat vegan diet
Behavioral
Lead sponsor
Physicians Committee for Responsible Medicine
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jan 19, 2026 · Synced Sep 10, 2026, 8:43 AM EDT
Completed Not applicable Interventional

Sip and Snack Better (SSB) Study: Improving Added Sugar in Adolescents

NCT07027865
View directory record Official record
Conditions
Dietary Habits, Diet, Healthy
Interventions
Sip & Snack Better (SSB) Intervention, Sip & Snack Better (SSB) Tech-Only Comparison
Behavioral · Other
Lead sponsor
Temple University
Other
Eligibility
12 Years to 16 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Sep 10, 2026, 8:43 AM EDT
Recruiting Not applicable Interventional

Lean Beef as Part of a Healthy Meal Plan in Adolescents With Polycystic Ovary Syndrome (PCOS)/Polyendocrine Metabolic Ovarian Syndrome (PMOS)

NCT07780188
View directory record Official record
Conditions
PCOS (Polycystic Ovary Syndrome), Obese Adolescents, Overweight (Without Type 2 Diabetes) With Weight-related Comorbidities, Overweight Adolescents, Irregular Menstrual Cycle, Irregular Menstrual Cycles, Hirsutism, Hyperandrogenism
Interventions
Beef+
Other
Lead sponsor
Texas A&M University
Other
Eligibility
11 Years to 17 Years · Female only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 10, 2026, 8:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dietary Intervention Examining Tracking With Mobile Devices

NCT02632461
View directory record Official record
Conditions
Obesity
Interventions
Podcasts, Mobile Diet Application, Bite Counter
Behavioral
Lead sponsor
University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 17, 2019 · Synced Sep 10, 2026, 8:43 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Comparison of Popular Weight Loss Diets

NCT00079573
View directory record Official record
Conditions
Obesity
Interventions
Atkins diet (extremely low carbohydrate), Zone diet (low carbohydrate, high protein), Ornish diet (very low fat)
Behavioral
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
30 Years to 50 Years · Female only
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2004
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Aug 17, 2006 · Synced Sep 10, 2026, 8:43 AM EDT
Completed Not applicable Interventional

KU Alternate Meal Energy Level Study

NCT03696966
View directory record Official record
Conditions
Obesity, Weight Loss
Interventions
Portion-Controlled Meals, Low-Calorie Diet, Intermittent Very-Low Calorie Diet
Dietary Supplement · Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jan 21, 2019 · Synced Sep 10, 2026, 8:43 AM EDT
Recruiting Not applicable Interventional

Evaluation of a Novel Technology to Support Tailored Health Behavior Counseling in Rural Primary Care Clinics

NCT06397729
View directory record Official record
Conditions
Cardiovascular Diseases, Obesity
Interventions
Wait-List Control, PREVENT Tool
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 64 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Sep 10, 2026, 8:43 AM EDT
Completed Not applicable Interventional Results available

Health, Aging and Later-Life Outcomes

NCT05424042
View directory record Official record
Conditions
Aging
Interventions
In-Person Caloric Restriction, Remote Caloric Restriction, Time-restricted
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
60 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 26, 2025 · Synced Sep 10, 2026, 8:43 AM EDT
Recruiting Not applicable Interventional

Preserving Physical Function in Older Adults With Cancer: Impact of an Optimizing Nutrition Intervention Applied Before and After Surgery

NCT05912257
View directory record Official record
Conditions
Cancer
Interventions
Structured perioperative nutrition and exercise, Nutrition and Exercise Counseling
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
55 Years and older
Enrollment
188 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Sep 10, 2026, 8:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Role of Carbohydrate Modification in Weight Management Among Obese Children

NCT00215111
View directory record Official record
Conditions
Childhood Obesity
Interventions
Low carbohydrate, reduced glycemic load, and a control diet
Behavioral
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
7 Years to 12 Years
Enrollment
102 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 4, 2015 · Synced Sep 10, 2026, 8:43 AM EDT
Withdrawn Early Phase 1 Interventional

Evaluating the Combined Effect of Vedolizumab and Semi-Vegetarian Diet on Ulcerative Colitis.

NCT03309865
View directory record Official record
Conditions
Ulcerative Colitis, Dietary Modification
Interventions
semi-vegetarian diet, Vedolizumab Injection
Dietary Supplement · Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 25, 2018 · Synced Sep 10, 2026, 8:43 AM EDT
Active, not recruiting Not applicable Interventional

Neoadjuvant Dietary Intervention in Intermediate Risk Prostate Cancer

NCT04985565
View directory record Official record
Conditions
Prostate Adenocarcinoma, Stage I Prostate Cancer AJCC v8, Stage II Prostate Cancer AJCC v8, Stage IIA Prostate Cancer AJCC v8, Stage IIB Prostate Cancer AJCC v8, Stage IIC Prostate Cancer AJCC v8, Stage IIIA Prostate Cancer AJCC v8
Interventions
Dietary Intervention, Radical Prostatectomy
Other · Procedure
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
30 Years to 75 Years · Male only
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Sep 10, 2026, 8:43 AM EDT
Completed Not applicable Interventional

Plant-Based Dietary Intervention in Type 2 Diabetes

NCT00276939
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
Low-fat, low-Glycemic Index, vegan diet
Behavioral
Lead sponsor
Physicians Committee for Responsible Medicine
Other
Eligibility
18 Years and older
Enrollment
99 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Aug 6, 2012 · Synced Sep 10, 2026, 8:43 AM EDT
Not listed Not applicable Interventional

Im(Proving) the CSA Model

NCT03231592
View directory record Official record
Conditions
Overweight and Obesity, Nutrition Poor, Diet Modification
Interventions
CSA Group, Enhanced Usual Care Group
Other
Lead sponsor
Community Health Center of Franklin County
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Greenfield, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 26, 2017 · Synced Sep 10, 2026, 8:43 AM EDT
Not listed Not applicable Interventional

Efficacy of Oxepa Enteral Feeding in LTAC (Long Term Acute Care Hospital) Patients on Chronic Ventilation- a Pilot Study

NCT02208700
View directory record Official record
Conditions
Acute Lung Injury, Mechanical Ventilation Complication, Dietary Modification
Interventions
Oxepa, Jevity 1.5
Other
Lead sponsor
Grace Hospital, Cleveland, Ohio
Other
Eligibility
19 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2014
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 4, 2014 · Synced Sep 10, 2026, 8:43 AM EDT
Completed Not applicable Interventional

Improving Energy Balance in Men With Prostate Cancer

NCT01886677
View directory record Official record
Conditions
Prostate Cancer
Interventions
Immediate diet and exercise intervention, Delayed diet and exercise intervention
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years and older · Male only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Mar 2, 2017 · Synced Sep 10, 2026, 8:43 AM EDT
Enrolling by invitation Not applicable Interventional

Heart Failure Food Intervention Trial: Impact of a Guideline-based Nutrition Digital Tool in Heart Failure Patient Clinical Outcomes

NCT06999369
View directory record Official record
Conditions
Heart Failure
Interventions
MedChef App, MedChefs and Instacart food voucher
Other
Lead sponsor
Sutter Health
Other
Eligibility
18 Years to 89 Years
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Walnut Creek, California
Source: ClinicalTrials.gov public record
Updated May 30, 2025 · Synced Sep 10, 2026, 8:43 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

The Effects of Chia on Overweight/Obese Women

NCT03233906
View directory record Official record
Conditions
Obesity, Eating Behavior, Mood, Glucose, Dietary Modification
Interventions
Chia Seeds- Salvia Hispanica
Dietary Supplement
Lead sponsor
California State Polytechnic University, Pomona
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Pomona, California
Source: ClinicalTrials.gov public record
Updated May 10, 2018 · Synced Sep 10, 2026, 8:43 AM EDT
Completed Not applicable Interventional

A Defined, Plant-based, 4-week Dietary Intervention Reduces Lp(a) and Other Atherogenic Particles

NCT03172611
View directory record Official record
Conditions
Hypercholesterolemia
Interventions
Dietary Intervention
Other
Lead sponsor
Texas Woman's University
Other
Eligibility
18 Years to 75 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 31, 2017 · Synced Sep 10, 2026, 8:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of Changes in Skin Carotenoid Scores in Medical Students Following a Dietary Supplement-based Intervention

NCT02464787
View directory record Official record
Conditions
Health Behavior
Interventions
LifePak Nano
Dietary Supplement
Lead sponsor
Texas Tech University Health Sciences Center
Other
Eligibility
18 Years to 89 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Aug 13, 2020 · Synced Sep 10, 2026, 8:43 AM EDT
Recruiting Not applicable Interventional

Mediterranean Diet Post-liver Transplantation

NCT04672863
View directory record Official record
Conditions
Liver Transplantation
Interventions
Dietary Intervention
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 6, 2026 · Synced Sep 10, 2026, 8:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Specialized Diet for the Unique Metabolic Characteristics of Peripubertal African American Girls

NCT00718874
View directory record Official record
Conditions
Obesity, Type 2 Diabetes
Interventions
Dietary
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
9 Years to 15 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Nov 24, 2019 · Synced Sep 10, 2026, 8:43 AM EDT
Completed Not applicable Interventional Results available

Effects of Whole Sprouts on Airway Allergic Inflammation

NCT01522703
View directory record Official record
Conditions
Allergic Rhinitis, Asthma, Allergy
Interventions
Broccoli Sprouts, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 50 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 18, 2017 · Synced Sep 10, 2026, 8:43 AM EDT
Completed Not applicable Interventional

Smart and Secure Children Program for Preschool Obesity

NCT02681874
View directory record Official record
Conditions
Obesity, Type 2 Diabetes
Interventions
SSC Program, Written Handouts
Behavioral
Lead sponsor
Baylor College of Medicine
Other
Eligibility
2 Years to 5 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2022
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 11, 2022 · Synced Sep 10, 2026, 8:43 AM EDT