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

Trial of Fish Intake Advice in Pregnancy

NCT01126762
View directory record Official record
Conditions
Nutrition
Interventions
Dietary advice, Control
Behavioral
Lead sponsor
Harvard Pilgrim Health Care
Other
Eligibility
18 Years and older · Female only
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 21, 2012 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ketogenic Diet Health and Longevity

NCT05939011
View directory record Official record
Conditions
Ketogenic Dieting, Ketoses, Metabolic, Ketosis
Interventions
Well-formulated Ketogenic Diet
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
30 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Nov 27, 2023 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Role of Peanuts in Healthy Weight Gain in Athletic Individuals

NCT05426109
View directory record Official record
Conditions
Weight Gain
Interventions
Peanut snacks, No peanut-containing snacks
Other
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
18 Years to 40 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Blacksburg, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 9, 2025 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Avocado Intake on the Nutritional Status of Families

NCT02903433
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
High-intake avocados, Low-intake avocados, Diet tips, Avocado consumption advice
Other · Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
5 Years and older
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Chula Vista, California
Source: ClinicalTrials.gov public record
Updated Apr 6, 2020 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Chitin-Glucan on Oxidized Low-Density Lipoprotein (LDL)

NCT01232309
View directory record Official record
Conditions
Cardiovascular
Interventions
Chitin-Glucan, Low Dose Chitin-Glucan, Low Dose Chitin-Glucan + Olive Extract, Placebo
Dietary Supplement
Lead sponsor
Stratum Nutrition
Industry
Eligibility
21 Years to 70 Years
Enrollment
135 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
2
States / cities
Addison, Illinois • Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Oct 22, 2012 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Exploring the Effects of a High Chlorophyll Dietary Intervention to Reduce Colon Cancer Risk in Adults

NCT03582306
View directory record Official record
Conditions
Colon Cancer Prevention
Interventions
High chlorophyll diet - intervention 1st, High chlorophyll diet - control 1st
Behavioral
Lead sponsor
Auburn University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Auburn, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 14, 2019 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional Results available

Trial of Low and High Intensity Strategies to Maintain BP Control

NCT00760552
View directory record Official record
Conditions
Hypertension
Interventions
High Intensity Intervention, Low Intensity Intervention, All- 6 month pharmacist intervention
Other
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years and older
Enrollment
249 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Apr 26, 2015 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Glycemic Load, Metabolism & Obesity in Pregnancy

NCT01287299
View directory record Official record
Conditions
Obesity, Insulin Resistance
Interventions
Low Glycemic Load diet, Low Fat Diet
Other
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 23, 2020 · Synced Sep 22, 2026, 3:05 PM EDT
Suspended Phase 2 Interventional

Paxalisib With a High Fat, Low Carb Diet and Metformin for Glioblastoma

NCT05183204
View directory record Official record
Conditions
Glioblastoma
Interventions
Paxalisib, Metformin, Ketogenic Diet
Drug · Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Sep 22, 2026, 3:05 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Genetic Architecture of Natriuretic Peptides and Blood Pressure Response

NCT07118592
View directory record Official record
Conditions
Hypertension (HTN), Cardiometabolic Diseases
Interventions
Low Salt Diet, High Salt Diet, Saline Infusion
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Mar 9, 2026 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Protein and Resistance Exercise to Stop Sarcopenic Obesity Now

NCT04014296
View directory record Official record
Conditions
Obesity
Interventions
High Protein Diet Counseling, Resistance Training Counseling, Intensify Initial Intervention, Combined Supplement and Supervised Resistance Training
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
50 Years and older
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional Results available

A Research Program Targeting Pre- and Peri-transplant Optimization Program (R-PPOP)

NCT03823651
View directory record Official record
Conditions
Hematologic Malignancy
Interventions
Interval training, Psychiatric consult, Nutrition/diet evaluation, Referral to Social Worker
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years to 80 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 26, 2024 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Phase 4 Interventional Results available

Novel Combination Therapy for Osteoporosis in Men

NCT03994172
View directory record Official record
Conditions
Male Osteoporosis
Interventions
Teriparatide or human parathyroid hormone (PTH) 1-34, Cinacalcet, placebo tablet, Calcium citrate tablet, Vitamin D3
Drug · Dietary Supplement
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
60 Years to 85 Years · Male only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional

Lifestyle-Related Health Outcomes in Prediabetes and Diabetes

NCT02535169
View directory record Official record
Conditions
Obesity, Prediabetic State, Type 2 Diabetes
Interventions
Health Education and Coaching Strategy, Dietary consult
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
10 Years to 21 Years
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2022
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 4, 2022 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional

Lean Beef Consumption and Insulin Sensitivity in Men and Women With Risk Factors for Diabetes

NCT03202680
View directory record Official record
Conditions
Metabolic Syndrome, PreDiabetes
Interventions
USDA Style Diet, Lean Beef Diet
Other
Lead sponsor
Midwest Center for Metabolic and Cardiovascular Research
Other
Eligibility
18 Years to 74 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Boca Raton, Florida
Source: ClinicalTrials.gov public record
Updated Jul 23, 2019 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Novel Metabolites of Beta-Carotene and Lycopene

NCT02550483
View directory record Official record
Conditions
Healthy
Interventions
Base diet + high beta-carotene tomato juice, Base diet + high lycopene tomato juice, Base diet + placebo beverage
Other
Lead sponsor
USDA Beltsville Human Nutrition Research Center
Federal
Eligibility
21 Years to 75 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Beltsville, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 25, 2018 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional Results available

Dietary Glycemic Index, Brain Function and Food Intake in Patients With Type 1 Diabetes Mellitus

NCT02772783
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
high GI meal, low GI meal, euglycemic insulin clamp, primed-variable insulin infusion
Other · Drug
Lead sponsor
Boston Children's Hospital
Other
Eligibility
18 Years to 45 Years · Male only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 17, 2021 · Synced Sep 22, 2026, 3:05 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Development of a Novel Method to Measure Insulin Sensitivity in Humans: A Pilot Study

NCT04774081
View directory record Official record
Conditions
Insulin Sensitivity
Interventions
24h Continuous glucose monitoring and urinary C-peptide collection
Device
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 65 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Jun 13, 2022 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Phase 2 Interventional Results available

PRV-015 in Gluten-free Diet Non-responsive Celiac Disease

NCT04424927
View directory record Official record
Conditions
Celiac Disease
Interventions
PRV-015, Placebo
Biological · Other
Lead sponsor
Provention Bio, a Sanofi Company
Industry
Eligibility
18 Years to 70 Years
Enrollment
388 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
28
States / cities
Los Angeles, California • Ventura, California • Denver, Colorado + 25 more
Source: ClinicalTrials.gov public record
Updated Oct 19, 2025 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Phase 2 Interventional

Preventing Hypertension and Sympathetic Overactivation by Targeting Phosphate

NCT03234361
View directory record Official record
Conditions
Hypertension
Interventions
High Phosphate Phase, Low Phosphate Phase
Dietary Supplement
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
94 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
2
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Nov 3, 2022 · Synced Sep 22, 2026, 3:05 PM EDT
Recruiting Not applicable Interventional

Carbohydrate Beta Cell Function and Glucose Control in Children With Diabetes

NCT05899166
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Ketogenic diet, food delivery and education, Standard diet, food delivery and education
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
5 Years to 12 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 23, 2025 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Brain, Obesity, Dopamine and You Study

NCT01094756
View directory record Official record
Conditions
Obesity
Interventions
meal replacements, psychotherapy, dietary education
Dietary Supplement
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 40 Years
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2016
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Nov 1, 2016 · Synced Sep 22, 2026, 3:05 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Nicotinamide Mononucleotide Supplementation for Exercise Tolerance Improvement in Healthy Older Adults

NCT07144527
View directory record Official record
Conditions
Aging, Frailty, Exercise Tolerance, Healthy Male and Female Subjects
Interventions
NMN, betaine, low-dose hydrogen peroxide (EGA), Nicotinamide Mononucleotide (NMN), Placebo
Dietary Supplement
Lead sponsor
Scott Silveira
Other
Eligibility
60 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Beverly Hills, California
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Sep 22, 2026, 3:05 PM EDT
Completed Not applicable Interventional

REACH-OUT: Chicago Children's Diabetes Prevention Program

NCT00723853
View directory record Official record
Conditions
Obesity, Type 2 Diabetes
Interventions
Reach-Out Program, nutritional and exercise program, Reach-In Program, standard of care
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
9 Years to 65 Years
Enrollment
131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 4, 2013 · Synced Sep 22, 2026, 3:05 PM EDT