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Showing 1–24 of 191 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Dietary Proteins Clear all
Completed No phase listed Observational Accepts healthy volunteers

Assessment of Dietary Protein Needs of Older Women

NCT01193946
View directory record Official record
Conditions
Protein-energy; Imbalance
Interventions
dietary control
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
80 Years and older · Female only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jan 16, 2013 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Improving Diet Protein Intake in Middle-aged Women

NCT04660851
View directory record Official record
Conditions
Dietary Habits
Interventions
Coached
Behavioral
Lead sponsor
Florida Atlantic University
Other
Eligibility
45 Years to 64 Years · Female only
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Boca Raton, Florida
Source: ClinicalTrials.gov public record
Updated Dec 8, 2020 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Weight Loss and Dietary Protein Intake on Bone

NCT00473031
View directory record Official record
Conditions
Weight Loss, Bone Density
Interventions
Caloric restriction, high protein, Caloric restriction; normal protein, Counseling
Behavioral
Lead sponsor
Rutgers University
Other
Eligibility
50 Years to 70 Years · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Protein Source on Gut Health

NCT05619939
View directory record Official record
Conditions
Diet, Healthy
Interventions
Protein isolate
Dietary Supplement
Lead sponsor
Stony Brook University
Other
Eligibility
18 Years to 30 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Apr 18, 2024 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

High-Protein Food Snack for Dialysis Patients

NCT04134377
View directory record Official record
Conditions
Renal Failure, Albumin; Double, Diet Habit
Interventions
Protein Food Snack
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 74 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 23, 2020 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Protein Intake & Insulin Action

NCT02004002
View directory record Official record
Conditions
Obesity
Interventions
Weight maintenance with normal protein intake, Weight maintenance with protein restriction
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 11, 2016 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Milk Protein Concentrate on Overall Health During Weight Loss in Overweight/Obese Adults

NCT01692860
View directory record Official record
Conditions
Sarcopenia, Metabolic Disease, High Blood Pressure
Interventions
Energy Restriction
Other
Lead sponsor
Purdue University
Other
Eligibility
35 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Nov 3, 2015 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Results available

Online Dietary and Resistance Training to Improve Physical Function in Older Cancer Survivors, E-PROOF Trial

NCT06016725
View directory record Official record
Conditions
Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, Stage I Colorectal Cancer AJCC v8, Stage I Prostate Cancer AJCC v8, Stage II Colorectal Cancer AJCC v8, Stage II Prostate Cancer AJCC v8, Stage III Colorectal Cancer AJCC v8, Stage III Prostate Cancer AJCC v8
Interventions
Exercise Intervention, Informational Intervention, Nutritional Assessment, Physical Performance Testing, Quality-of-Life Assessment, Questionnaire Administration
Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
65 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 1, 2026 · Synced Sep 22, 2026, 8:47 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, 8:47 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

LiveSMART Trial to Prevent Falls in Patients With Cirrhosis - Supplementary Study

NCT07140120
View directory record Official record
Conditions
Cirrhosis, Liver, Portal Hypertension
Interventions
Not listed
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
3
States / cities
Ann Arbor, Michigan • Philadelphia, Pennsylvania • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Phase 3 Interventional

Sodium Lowering and Urinary Protein Reduction Trial

NCT02945969
View directory record Official record
Conditions
Chronic Kidney Disease, Albuminuria
Interventions
Low Sodium Diet
Behavioral
Lead sponsor
Tulane University School of Public Health and Tropical Medicine
Other
Eligibility
21 Years and older
Enrollment
151 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Dec 20, 2022 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Fruit and Vegetable Juice Concentrate Effects on RBP4 and Antioxidant Capacity in Lean and Overweight 6-10 Year Old Boys

NCT00842543
View directory record Official record
Conditions
Obesity
Interventions
Fruit and Vegetable Juice Concentrate (FVJC), Placebo
Dietary Supplement
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
6 Years to 10 Years · Male only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 25, 2013 · Synced Sep 22, 2026, 8:47 PM EDT
Not listed No phase listed Observational

Malnutrition, Diet and Racial Disparities in Chronic Kidney Disease (CKD)

NCT01415570
View directory record Official record
Conditions
Chronic Kidney Disease (CKD), End-Stage Renal Disease (ESRD)
Interventions
Not listed
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Other
Eligibility
18 Years to 85 Years
Enrollment
1,050 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated May 20, 2015 · Synced Sep 22, 2026, 8:47 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Diet Synergy in Muscle Protein Synthesis

NCT07367854
View directory record Official record
Conditions
Muscle Protein Synthetic Response to Protein, Muscle Protein Synthesis, Muscle Health, Protein Metabolism, Recreational Activities, Isotope Labeling
Interventions
Resistance Exercise, Potato and Beef, Bread and Beef, Beef
Behavioral · Dietary Supplement
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
19 Years to 40 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Alternate Day Fasting Combined With a High Protein Background Diet

NCT03528317
View directory record Official record
Conditions
Obesity
Interventions
Alternate day fasting
Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 65 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 7, 2021 · Synced Sep 22, 2026, 8:47 PM EDT
Recruiting Not applicable Interventional

A Pilot, Feasibility Study of Intermittent Caloric Restriction Plus Plant-based Diet in Cancer Patients Receiving Chemotherapy

NCT05359848
View directory record Official record
Conditions
Medical Oncology, Integrative Oncology, Medical Nutrition Therapy
Interventions
Diet
Other
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
2
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Sep 22, 2026, 8:47 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Effect of Incorporating Lean Beef Into a Protein-rich Diet During Resistance Training on Muscle and Tendon Strength in Older Women

NCT04347447
View directory record Official record
Conditions
Sarcopenia, Aging
Interventions
Exercise training
Other
Lead sponsor
Purdue University
Other
Eligibility
60 Years to 80 Years · Female only
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 28, 2023 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Trial of the Ideal Protein System Versus Low Fat Diet for Weight Loss

NCT03515889
View directory record Official record
Conditions
Weight Loss
Interventions
Ideal Protein Weight Loss Method, Standard Weight Loss
Behavioral
Lead sponsor
Tulane University
Other
Eligibility
22 Years to 79 Years
Enrollment
192 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Bogalusa, Louisiana
Source: ClinicalTrials.gov public record
Updated Nov 21, 2024 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Phase 3 Interventional Results available

LiveSMART Trial to Prevent Falls in Patients With Cirrhosis

NCT05794555
View directory record Official record
Conditions
Cirrhosis, Liver, Portal Hypertension
Interventions
Enhanced Usual Care, Lactulose, Investigator recommended exercise, TeleTai-Chi (virtual)
Behavioral · Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
233 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
3
States / cities
Ann Arbor, Michigan • Philadelphia, Pennsylvania • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Molecular Mechanisms Underlying Anabolic Resistance to Protein Intake During Muscle Disuse

NCT06228742
View directory record Official record
Conditions
Atrophy, Disuse, Muscle Atrophy, Muscular Disorders, Atrophic, Disuse Atrophy, Disuse Atrophy Muscle of Thigh
Interventions
Unilateral leg immobilization, Contralateral active leg
Other
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 39 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 1, 2024 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Impact of Dietary Restriction of Animal Protein and Fat on Osteoarthritis

NCT01939262
View directory record Official record
Conditions
Osteoarthritis
Interventions
Limitation of Animal Fat and Protein in the Diet, Control
Other
Lead sponsor
Essentia Health
Other
Eligibility
18 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Traverse City, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 19, 2013 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional

Effects of Wolffia Globosa (Mankai) in Patients Undergoing Bariatric Surgery.

NCT03999632
View directory record Official record
Conditions
Bariatric Surgery Candidate, Diet Modification
Interventions
Dietary modification with introduction of Mankai
Other
Lead sponsor
Cleveland Clinic Florida
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Weston, Florida
Source: ClinicalTrials.gov public record
Updated Feb 3, 2021 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bioavailability of Zinc and Iron From a Whey-based Protein Supplement Consumed With a Habitual Plant-based Diet

NCT02208622
View directory record Official record
Conditions
Nutritional Deficiency
Interventions
Study 1: Whey Supplement Day 1, Study 1: Whey Supplement Day 2, Study 2: Whey Supplement
Dietary Supplement
Lead sponsor
University of Colorado, Denver
Other
Eligibility
2 Years to 3 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 4, 2019 · Synced Sep 22, 2026, 8:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Diet Composition and Physical Inactivity on Insulin Sensitivity and β-cell Function

NCT03013764
View directory record Official record
Conditions
Physical Inactivity, Dietary Protein
Interventions
normal protein diet, high protein intake
Behavioral
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 45 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 14, 2018 · Synced Sep 22, 2026, 8:47 PM EDT