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ClinicalTrials.gov public records Last synced Oct 20, 2026, 11:30 AM EDT

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Showing 1–24 of 87 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: normal protein diet Clear all
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Fructose on Blood Fats in Dialysis Patients and Healthy Volunteers

NCT00234156
View directory record Official record
Conditions
End-stage Renal Disease
Interventions
oral fructose and high fat diet
Procedure
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 11, 2012 · Synced Oct 20, 2026, 11:30 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 17, 2024 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Phase 2 Interventional Results available

RECOVER-AUTONOMIC Platform Protocol

NCT06305780
View directory record Official record
Conditions
Long COVID, Long Covid19, Long Covid-19
Interventions
IVIG + Coordinated Care, IVIG Placebo + Coordinated Care, Ivabradine + Coordinated Care, Ivabradine Placebo + Coordinated Care, IVIG + Usual Care, IVIG Placebo + Usual Care, Ivabradine + Usual Care, Ivabradine Placebo + Usual Care
Drug
Lead sponsor
Kanecia Obie Zimmerman
Other
Eligibility
18 Years and older
Enrollment
381 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
50
States / cities
Opelika, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 45 more
Source: ClinicalTrials.gov public record
Updated Aug 3, 2026 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Increased Protein at Breakfast for Weight Management in Overweight Adolescents

NCT03146442
View directory record Official record
Conditions
Obesity, Adolescent
Interventions
Breakfast
Behavioral
Lead sponsor
University of Texas at Austin
Other
Eligibility
13 Years to 21 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Oct 31, 2023 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Protein Quantity Within the USDA Healthy Style Eating Pattern on Sleep

NCT03174769
View directory record Official record
Conditions
Sleep, Body Composition
Interventions
Normal protein, High protien
Other
Lead sponsor
Purdue University
Other
Eligibility
35 Years to 69 Years
Enrollment
71 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Dec 20, 2019 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

PROOF: PROtein OverFeeding Effect on Body Weight

NCT00565149
View directory record Official record
Conditions
Obesity
Interventions
PROOF
Behavioral
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 35 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2016
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Aug 25, 2021 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Not applicable Interventional

Low-Carbohydrate Diabetes Prevention Program Among Veterans With Prediabetes

NCT04881890
View directory record Official record
Conditions
PreDiabetes
Interventions
Low-Carbohydrate Diabetes Prevention Program
Behavioral
Lead sponsor
VA Ann Arbor Healthcare System
Federal
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 8, 2022 · Synced Oct 20, 2026, 11:30 AM EDT
Recruiting Not applicable Interventional

Creatine Supplementation in Concussion Recovery

NCT06208813
View directory record Official record
Conditions
Concussion, Brain
Interventions
Creatine
Dietary Supplement
Lead sponsor
San Diego State University
Other
Eligibility
18 Years to 35 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jun 18, 2026 · Synced Oct 20, 2026, 11:30 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

PGC-1 & Muscle Mitochondrial Dysfunction in Diabetes

NCT02282423
View directory record Official record
Conditions
Diabetes, Obesity
Interventions
Pre-study dietary and exercise instruction., Screening examination and oral glucose tolerance test, Euglycemic clamp, VO2max., Acute exercise bout, Percutaneous needle muscle biopsies
Behavioral · Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
30 Years to 59 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated May 12, 2016 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ketogenic Intervention in Depression

NCT06080932
View directory record Official record
Conditions
Depression, Ketosis
Interventions
Ketogenic Diet, NIH Toolbox, gradCPT, Resting-state fMRI, Task-fMRI, CGM/CKM, Blood Draw, Sleep Monitoring, Ketone/Glucose Monitoring, Body Composition, PHQ-9, WHO-5, SKID
Other · Biological · Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 30 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 29, 2025 · Synced Oct 20, 2026, 11:30 AM EDT
Withdrawn No phase listed Observational

Neurodevelopmental Outcome of Early Dietary Lysine Restriction in Pyridoxine Dependent Epilepsy Patients

NCT01795170
View directory record Official record
Conditions
Pyridoxine Dependant Epilepsy
Interventions
Lysine Restricted Diet, Pyridoxine
Dietary Supplement · Drug
Lead sponsor
University of British Columbia
Other
Eligibility
3 Months to 3 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
2
States / cities
Aurora, Colorado • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 30, 2014 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Not applicable Interventional

Dairy Modulation of Oxidative and Inflammatory Stress in Overweight and Obese Subjects

NCT00948038
View directory record Official record
Conditions
Obesity, Overweight
Interventions
Milk, Soy
Dietary Supplement
Lead sponsor
University of Tennessee
Other
Eligibility
18 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 29, 2009 · Synced Oct 20, 2026, 11:30 AM EDT
Not listed Not applicable Interventional

Dietary Sodium (DS) Intervention to Reduce Volume Overload and Tissue Sodium in Magnetic Resonance Imaging (MRI) for Hemodialysis (HD) Patients

NCT03189758
View directory record Official record
Conditions
Kidney Failure, Chronic, Dietary Modification
Interventions
Observational Control Diet, Controlled Dietary Sodium Restriction
Other
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 3, 2020 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Not applicable Interventional

L-carnosine for Schizophrenia

NCT00177177
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
L-carnosine (dietary supplement)
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 65 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
4
States / cities
Bridgeville, Pennsylvania • DuBois, Pennsylvania • McKeesport, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 16, 2013 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Phase 1 Interventional

Physiological Effects of Grape Seed Extract in Diastolic Heart Failure

NCT01185067
View directory record Official record
Conditions
Diastolic Heart Failure, Hypertensive Heart Disease, Heart Failure With Preserved Ejection Fraction, Hypertension, Oxidative Stress
Interventions
grape seed extract (MegaNatural BP, Polyphenolics, Inc.)
Drug
Lead sponsor
University of Michigan
Other
Eligibility
50 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 6, 2017 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Calorie Restriction on Accumulation of Old, Modified Proteins in Abdominally Obese Adults

NCT01497106
View directory record Official record
Conditions
Insulin Resistance
Interventions
Calorie Restriction, Control (normal living)
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
45 Years to 65 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 26, 2014 · Synced Oct 20, 2026, 11:30 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Zinc and the Synthesis of Zinc Binding Proteins (Protocol B)

NCT01221129
View directory record Official record
Conditions
Zinc Deficiency
Interventions
Acclimation, Dietary zinc depletion, Dietary zinc repletion
Other
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 35 Years · Male only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 20, 2011 · Synced Oct 20, 2026, 11:30 AM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

The Healthy Diet and Lifestyle Study II

NCT05132686
View directory record Official record
Conditions
Intra-Abdominal Fat
Interventions
IER+MED, MED/DER
Behavioral
Lead sponsor
University of Hawaii
Other
Eligibility
35 Years to 69 Years
Enrollment
260 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Honolulu, Hawaii
Source: ClinicalTrials.gov public record
Updated Apr 3, 2026 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Fat Gain and Cardiovascular Disease Mechanisms

NCT00589498
View directory record Official record
Conditions
Hypertension, Sleep Apnea Syndromes, Obesity
Interventions
1000 extra calories
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 40 Years
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2012
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 4, 2013 · Synced Oct 20, 2026, 11:30 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Treatment of Orthostatic Intolerance

NCT00262470
View directory record Official record
Conditions
Tachycardia, Chronic Orthostatic Intolerance
Interventions
Acetazolamide, Atomoxetine, NO Drug, Clonidine, Entacapone, Entacapone & Propranolol, Atomoxetine & Propranolol, Indomethacin, Mecamylamine, Isosorbide Dinitrate, Melatonin, Midodrine, Modafinil, Octreotide, Placebo, Propranolol, Modafinil & Propranolol, Sertraline, IV Saline, Drinking Water, Breathing Device, memantine, Abdominal binder
Drug · Other · Dietary Supplement + 3 more
Lead sponsor
Satish R. Raj
Other
Eligibility
18 Years to 70 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1997 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Phase 1 Interventional

RYGB and the Gastric Adipose Axis

NCT01474785
View directory record Official record
Conditions
Obesity
Interventions
human ghrelin, very low calorie diet, Hyperinsulinemic/Euglycemic Clamp
Drug · Other · Procedure
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 65 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 21, 2018 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

High Protein Breakfast on Weight Management and Glycemic Control in 'Breakfast-skipping' Teens

NCT03134014
View directory record Official record
Conditions
Breakfast, Appetitive Behavior
Interventions
Breakfast
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
15 Years to 21 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 2, 2019 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Not applicable Interventional

Comparing High and Normal Protein Diets for the Dietary Remission of Type 2 Diabetes

NCT03832933
View directory record Official record
Conditions
Diabetes Type 2, Obesity, Diet Modification
Interventions
High Protein Diet, Standard Protein Diet
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
117 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
2
States / cities
Birmingham, Alabama • Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated May 10, 2022 · Synced Oct 20, 2026, 11:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Caloric Restriction and Protein Intake on Metabolism and Anabolic Sensitivity

NCT02945410
View directory record Official record
Conditions
Weight Loss, Starvation
Interventions
Caloric Restriction, Protein, Exercise, Calcium and Vitamin D, Maltodextrin
Other · Dietary Supplement
Lead sponsor
University of Nebraska Lincoln
Other
Eligibility
19 Years to 30 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Dec 19, 2019 · Synced Oct 20, 2026, 11:30 AM EDT