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ClinicalTrials.gov public records Last synced Oct 1, 2026, 7:45 AM EDT

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Showing 25–48 of 348 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: high protein diet Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

A Pilot Study to Evaluate the Ability of Lactoferrin to Modulate Iron Homeostasis and Exercise Performance in Exercising Females

NCT07546591
View directory record Official record
Conditions
Iron Deficiencies, Low Ferritin, Iron Deficiency, Exercise Performance of Fit Athletes
Interventions
Lactoferrin 100 mg, Lactoferrin 300 mg, Iron Supplementation (5 mg)
Dietary Supplement
Lead sponsor
Lindenwood University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Oct 1, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Colorectal Inflammatory Response to a Western-Style Diet

NCT00932308
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Western-style diet (WD), Prudent Diet (PD)
Dietary Supplement
Lead sponsor
Rockefeller University
Other
Eligibility
50 Years to 72 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 17, 2012 · Synced Oct 1, 2026, 7:45 AM EDT
Completed Not applicable Interventional

Resistance Training and Protein Supplementation for Prostate Cancer Survivors

NCT01909440
View directory record Official record
Conditions
Prostate Cancer
Interventions
exercise intervention, nutritional supplementation, quality-of-life assessment, questionnaire administration, pharmacological study, laboratory biomarker analysis
Behavioral · Dietary Supplement · Procedure + 1 more
Lead sponsor
University of Southern California
Other
Eligibility
50 Years and older · Male only
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 19, 2019 · Synced Oct 1, 2026, 7:45 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

The Effect of Protein on Calcium Absorption and Gastric Acid Production

NCT00719160
View directory record Official record
Conditions
Osteoporosis
Interventions
esomeprazole, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 45 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 6, 2020 · Synced Oct 1, 2026, 7:45 AM EDT
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 1, 2026, 7:45 AM EDT
Completed Phase 2 Interventional

Soy Protein Supplement in Preventing Prostate Cancer in Patients With Elevated Prostate-Specific Antigen Levels

NCT00031746
View directory record Official record
Conditions
Prostate Cancer
Interventions
soy protein isolate, casein proteins
Dietary Supplement
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
50 Years and older · Male only
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2006
U.S. locations
5
States / cities
Washington D.C., District of Columbia • Syracuse, New York • Winston-Salem, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 19, 2016 · Synced Oct 1, 2026, 7:45 AM EDT
Completed Not applicable Interventional

Use of the Atkins Diet for Adults With Intractable Epilepsy

NCT00121927
View directory record Official record
Conditions
Epilepsy
Interventions
Atkins diet (15 grams/day carbohydrates)
Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 27, 2010 · Synced Oct 1, 2026, 7:45 AM EDT
Recruiting Phase 2Phase 3 Interventional

Targeting the Neurobiology of RRB in Autism Using N-acetylcysteine: Trial

NCT05664789
View directory record Official record
Conditions
Autism Spectrum Disorder
Interventions
N acetyl cysteine, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
3 Years to 12 Years
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated May 15, 2026 · Synced Oct 1, 2026, 7:45 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 1, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Single Photon Emission Computed Tomography (SPECT) Imaging Study of Professional American Football Players

NCT01515839
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Multivitamin Supplement intervention
Dietary Supplement
Lead sponsor
Amen Clinics, Inc.
Industry
Eligibility
18 Years and older · Male only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Newport Beach, California
Source: ClinicalTrials.gov public record
Updated Jan 24, 2012 · Synced Oct 1, 2026, 7:45 AM EDT
Recruiting Not applicable Interventional

Ketogenic and Nutritional Interventions for First Episode Bipolar Disorder

NCT06221852
View directory record Official record
Conditions
Bipolar I Disorder, Psychosis, Schizoaffective Disorder
Interventions
Ketogenic diet, Dietary Guidelines for Americans
Other
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 45 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Oct 1, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Personalized Lifestyle Intervention for Improving Functional Health Outcomes Using N-of-1 Tent-Umbrella-Bucket Design

NCT04005456
View directory record Official record
Conditions
Health, Subjective, Gastrointestinal Dysfunction, Cardiovascular Risk Factor, Autoimmune Diseases, Dental Diseases, Hormone Disturbance, Neurocognitive Dysfunction
Interventions
Supplements and/or medical foods, Behavioral change support program, Food plan
Dietary Supplement · Behavioral · Other
Lead sponsor
Metagenics, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
Gig Harbor, Washington
Source: ClinicalTrials.gov public record
Updated Oct 30, 2023 · Synced Oct 1, 2026, 7:45 AM EDT
Enrolling by invitation Phase 1Phase 2 Interventional

Autism Spectrum Disorder (ASD) Neurodevelopmental Disorder With Issues Social Behavior, Communication Issues, GI Dysfunction. Study is Multimodal Interventions Targeting These Pathways With cSVF, Stored MSCs, FMT and Diet Modification. Role of Autoimmunity, Gut-brain Issues, & Issues Examined.

NCT07546942
View directory record Official record
Conditions
Autism Spectrum Disorder, Autism, Autism Spectral Disorder
Interventions
Autologous MSC isolation, concentration, and cryopreservation of adult mesenchymal stem cells, Fecal Biomicrome Transplantation (FMT), Ketogenic RESET Diet Protocol, Trial combines use of cSVF and MSCs (cryopres) with diet modification and FMT (fecal material Transplant in adult ASD patients, FMT (Fecal Material Tranplantation), Use autologous cSVF + MSCs (cryo) for management of autoimmune component, anti-inflammatory and immune modulation
Procedure · Dietary Supplement · Behavioral + 1 more
Lead sponsor
Black Tie Medical, Inc.
Industry
Eligibility
10 Years to 90 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
2
States / cities
Hamilton, Montana
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Oct 1, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Diet Composition on Performance, Expenditure, Blood Lipids, and Appetite Hormones in Highly Trained Cyclists

NCT04097171
View directory record Official record
Conditions
Endurance Cycling Performance
Interventions
Diet
Other
Lead sponsor
Texas Christian University
Other
Eligibility
18 Years to 65 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Fort Worth, Texas
Source: ClinicalTrials.gov public record
Updated Oct 5, 2021 · Synced Oct 1, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Beneficial Effects of Healthy Snacks on Appetite Control, Satiety, and Reward-driven Eating Behavior in Young People

NCT01781286
View directory record Official record
Conditions
Obesity
Interventions
High Protein, Low Protein
Behavioral
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
13 Years to 19 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 23, 2018 · Synced Oct 1, 2026, 7:45 AM EDT
Completed Not applicable Interventional

Impact of a Ketogenic Diet on Metabolic and Psychiatric Health in Patients With Bipolar or Schizophrenia Illness

NCT03935854
View directory record Official record
Conditions
Obesity, Ketogenic Dieting, Metabolic Syndrome, Bipolar Disorder, Schizophrenia, Weight Gain, Psychotropic Agents Causing Adverse Effects in Therapeutic Use, Brain Metabolic Disorder
Interventions
LCHF, Ketogenic Diet
Other
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 75 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 17, 2024 · Synced Oct 1, 2026, 7:45 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Liver Glycogen and Hypoglycemia in Humans

NCT03241706
View directory record Official record
Conditions
Hypoglycemia; Iatrogenic
Interventions
Low Fructose, Saline, Somatostatin, Insulin, Glucagon, Dextrose solution, High Fructose
Drug
Lead sponsor
Jason Winnick
Other
Eligibility
21 Years to 40 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2028
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 25, 2025 · Synced Oct 1, 2026, 7:45 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

How Animal and Plant Protein Shakes Change the Body's Nutrient and Health Responses

NCT07121010
View directory record Official record
Conditions
Cardiometabolic Health
Interventions
Animal-Based Protein Smoothie, Plant-Based Protein Smoothie, Plant-Based Protein Smoothie with Leucine
Dietary Supplement
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 25, 2026 · Synced Oct 1, 2026, 7:45 AM EDT
Terminated Early Phase 1 Interventional

PCSK9 Inhibition in Patients With Symptomatic Intracranial Atherosclerosis

NCT03507374
View directory record Official record
Conditions
Stroke, Intracranial Atherosclerosis, Intraplaque Hemorrhage
Interventions
Alirocumab, Placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 21, 2020 · Synced Oct 1, 2026, 7:45 AM EDT
Not yet recruiting Not applicable Interventional

Di-PKD: A Pilot Trial of Dietary Intervention in Patients With Autosomal Dominant Polycystic Kidney Disease

NCT06786260
View directory record Official record
Conditions
Autosomal Dominant Polycystic Kidney Disease (ADPKD)
Interventions
Interventional Diet
Other
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Jan 30, 2026 · Synced Oct 1, 2026, 7:45 AM EDT
Completed Not applicable Interventional Results available

Multi-Component Prehabilitation for Major Elective Surgery

NCT05752474
View directory record Official record
Conditions
Frailty, Functional Recovery, Prehabilitation
Interventions
Exercise, Nutrition, Meditation, Cognitive Behavioral Intervention
Behavioral
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
65 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 3, 2025 · Synced Oct 1, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Resistant Starch Insulin Sensitivity Trial

NCT01027325
View directory record Official record
Conditions
Healthy, Cardiovascular Disease, Atherogenic Dyslipidemia, Insulin Resistance
Interventions
Dietary Intervention
Other
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
20 Years and older
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
2
States / cities
Berkeley, California • Oakland, California
Source: ClinicalTrials.gov public record
Updated Jan 14, 2013 · Synced Oct 1, 2026, 7:45 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 1, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of High Fruit, Vegetable, and Dairy Intake on Plasma Lipids and Blood Pressure in Healthy Individuals

NCT01404897
View directory record Official record
Conditions
Cardiovascular Disease, Dyslipidemia, Blood Pressure
Interventions
Dietary Intervention
Other
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
22 Years and older
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Berkeley, California
Source: ClinicalTrials.gov public record
Updated Mar 26, 2015 · Synced Oct 1, 2026, 7:45 AM EDT