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Showing 1–24 of 1,217 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: High Diet Clear all
Not listed Phase 3 Interventional Accepts healthy volunteers

Dissemination of a Tailored Tobacco Quitline for Rural Veteran Smokers

NCT01892813
View directory record Official record
Conditions
Nicotine Dependence, Tobacco Use
Interventions
Nicotine replacement therapy - Transdermal nicotine patch, Nicotine replacement therapy - Nicotine gum, Nicotine replacement therapy - Nicotine lozenge, Bupropion, Varenicline, Combination pharmacotherapy - Transdermal nicotine patch + nicotine gum, Combination pharmacotherapy - Transdermal nicotine patch + nicotine lozenge, Combination pharmacotherapy - Transdermal nicotine patch + bupropion, Tobacco quitline referral, Tailored behavioral intervention, Alcohol use risk reduction, Behavioral activation for depressive symptoms, Behavioral management of postcessation weight gain
Drug · Behavioral
Lead sponsor
Mark Vander Weg
Other
Eligibility
18 Years to 99 Years
Enrollment
411 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 10, 2017 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

The Role of COX-2 Inhibition in Salt Sensitivity of Blood Pressure

NCT00624559
View directory record Official record
Conditions
Hypertension
Interventions
celecoxib (Celebrex), Placebo
Drug · Other
Lead sponsor
University of Delaware
Other
Eligibility
22 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Jan 5, 2012 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Not applicable Interventional

A Nutrition Intervention to Lower Blood Pressure in Adolescents

NCT00431288
View directory record Official record
Conditions
Hypertension
Interventions
diet high in fruits, vegetables, and dairy, Routine nutrition care
Behavioral · Other
Lead sponsor
University of Cincinnati
Other
Eligibility
11 Years to 18 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 1, 2023 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Dietary Folate and Phytate Zinc Absorption: Zinc Amino Acid Complexes vs. Zinc-chloride

NCT05273710
View directory record Official record
Conditions
Dietary Zinc Absorption
Interventions
Regular toast and juice, High phytate toast and juice, Regular toast and juice, with folic acid
Other
Lead sponsor
University of California, Berkeley
Other
Eligibility
19 Years to 50 Years · Male only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Berkeley, California
Source: ClinicalTrials.gov public record
Updated Dec 20, 2022 · Synced Sep 18, 2026, 6:37 AM EDT
Recruiting Not applicable Interventional

Metabolic Impact of Prospective Controlled Mediterranean Type Diets on Prostate Cancer

NCT05590624
View directory record Official record
Conditions
Prostate Cancer
Interventions
Lower-Carbohydrate Med-t-Diet, Low-Fat Med-t-Diet
Other
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older · Male only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 18, 2026 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Metabolism of Bioactive Dietary Polyphenol Preparation (BDPP)

NCT04421079
View directory record Official record
Conditions
Healthy Control
Interventions
Trans-resveratrol, Concord grape juice, Grape seed polyphenol extract, Placebo
Dietary Supplement · Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 55 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 2, 2025 · Synced Sep 18, 2026, 6:37 AM EDT
Not listed Early Phase 1 Interventional

Lovaza's Effect on Clopidogrel in a Neuro Population

NCT01526824
View directory record Official record
Conditions
Ischemic Stroke, Transient Ischemic Attack
Interventions
omega-3 polyunsaturated fatty acids (Lovaza)
Dietary Supplement
Lead sponsor
Millard Fillmore Gates Hospital
Other
Eligibility
25 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Feb 5, 2012 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Comparing Tricor, Avandia, or Weight Loss to Lower Cardiovascular Risk Factors in People With High Triglycerides.

NCT00186537
View directory record Official record
Conditions
Insulin Resistance, Hypertriglyceridemia
Interventions
Rosiglitazone, Fenofibrate, Weight Loss
Drug · Behavioral
Lead sponsor
Stanford University
Other
Eligibility
30 Years to 65 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2008
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Sleep, Physical Activity, and Dietary Habits Among High School Student-athletes and Non-athletes During an Academic Semester

NCT04997603
View directory record Official record
Conditions
Sleep Quantity, Sleep Efficiency
Interventions
Accelerometer
Other
Lead sponsor
PepsiCo Global R&D
Industry
Eligibility
15 Years to 18 Years
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
4
States / cities
Barrington, Illinois • Belton, Texas • McGregor, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 8, 2021 · Synced Sep 18, 2026, 6:37 AM 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 18, 2026, 6:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Alternative Dietary Approaches Online to Promote Tracking

NCT05049005
View directory record Official record
Conditions
Diet Quality, Weight Loss
Interventions
Simplified dietary tracking
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 35 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 11, 2022 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Not applicable Interventional

Calcium Metabolism in Asian Adolescents

NCT00591708
View directory record Official record
Conditions
Bone Mineralization, Adolescent Development
Interventions
Beverage containing calcium citrate malate, Beverage fortified with calcium citrate malate
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
11 Years to 15 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 8, 2018 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Trial to Assess Gastrointestinal Responses to Dietary Fibers in Adults Using Weight Loss Medications

NCT07012317
View directory record Official record
Conditions
Gastrointestinal Symptoms, Weight Loss, GLP-1
Interventions
High Fiber Bar with Inulin, High Fiber bar with Fiber Blend, High Fiber Bar with Resistant Starch type 4, Low Fiber Bar
Other
Lead sponsor
Midwest Center for Metabolic and Cardiovascular Research
Other
Eligibility
25 Years to 64 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
2
States / cities
Miami Gardens, Florida • Port Saint Lucie, Florida
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Not applicable Interventional

Resistant Starch on Glucose and Insulin Sensitivity in Individuals With Type 2 Diabetes

NCT00691249
View directory record Official record
Conditions
Hyperglycemia
Interventions
Resistant Starch Type 4-Raw, Resistant Starch Type 4-Cooked, Shredded Wheat
Dietary Supplement
Lead sponsor
Kansas State University
Other
Eligibility
Not listed
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Manhattan, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 1, 2009 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Not applicable Interventional Results available

Utilizing Protein During Weight Loss to Impact Physical Function and Bone

NCT03819478
View directory record Official record
Conditions
Obesity, Weight Loss, Diet Modification, Aging, Weight Change, Body, Dietary Habits, Osteopenia, Osteoporosis, Bone Loss, Fractures, Bone
Interventions
Weight loss intervention months 0-6, Exercise intervention months 0-6, NutraBio™ CarboMax Supplement, 6-month NutraBio™ 100% Whey Protein Isolate Supplement, 18-month NutraBio™ 100% Whey Protein Isolate Supplement
Behavioral · Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
65 Years to 85 Years
Enrollment
187 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 18, 2024 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Phase 2 Interventional

Muscle Composition and Function for Swallowing in Head/Neck Cancer Patients

NCT00796952
View directory record Official record
Conditions
Head & Neck Cancer
Interventions
focused attention sessions, Valchuff, Pharyngocise
Behavioral
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 90 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2005
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 19, 2011 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Not applicable Interventional

Smartstep Smartphone PAD

NCT03479255
View directory record Official record
Conditions
Peripheral Arterial Disease
Interventions
Smartphone-enabled structured exercise therapy (SE-SET), Standard exercise therapy
Behavioral
Lead sponsor
Emory University
Other
Eligibility
18 Years to 89 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 12, 2025 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

"ADAPT" The Adaptation to High Fat Diets Extention

NCT00493701
View directory record Official record
Conditions
Healthy
Interventions
High Fat Diet, Low Fat Diet
Behavioral
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 30 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Sep 14, 2022 · Synced Sep 18, 2026, 6:37 AM EDT
Not listed Not applicable Interventional

Dietary Supplementation on Fat Oxidation

NCT06548048
View directory record Official record
Conditions
Overweight, Obesity
Interventions
Dietary supplement containing plant derived phenolics, Microcrystaline cellulose
Dietary Supplement
Lead sponsor
Brightseed
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 11, 2024 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

The Efficacy and Tolerability of Acarbose in Healthy Individuals

NCT05542849
View directory record Official record
Conditions
Tolerance, Side Effect, Glucose Response
Interventions
Acarbose Tablets 50mg
Drug
Lead sponsor
AgelessRx
Industry
Eligibility
18 Years to 85 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 26, 2023 · Synced Sep 18, 2026, 6:37 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Effect of Prehabilitation on Surgical Outcomes of Abdominally-based Plastic Surgery Procedures

NCT04787874
View directory record Official record
Conditions
Ventral Hernia, Panniculus, Abdominoplasty, Flap Reconstruction
Interventions
Prehabilitation Program
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
19 Years and older
Enrollment
520 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
2
States / cities
San Jose, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 14, 2021 · Synced Sep 18, 2026, 6:37 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Spirulina Oral Supplement for Enhancing Host Resilience to Virus Infection

NCT05447078
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Immulina TM, Placebo
Drug · Dietary Supplement
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
18 Years and older
Enrollment
492 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Sep 18, 2026, 6:37 AM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

The Effect of Nutritional Supplementation on Actinic Purpura: A Pilot Study

NCT06840574
View directory record Official record
Conditions
Skin Health, Skin Aging of Face and Hands, Healthy, Ecchymosis
Interventions
Cyruta Plus: A Whole-Food Based Vitamin C supplement containing organic buckwheat (aerial parts) juice powder, organic buckwheat flour, bovine adrenal Cytosol™ extract, oat flour, honey, ascorbic acid, Low Dose Vitamin C, High Dose Vitamin C
Dietary Supplement
Lead sponsor
Standard Process Inc.
Industry
Eligibility
55 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced Sep 18, 2026, 6:37 AM EDT
Not listed Not applicable Interventional

The Effect of a High Fiber Diet and High-Intensity Interval Exercise in Patients With HFpEF

NCT05236413
View directory record Official record
Conditions
Heart Failure With Preserved Ejection Fraction
Interventions
High Intensity Interval Exercise, Dietary Approaches to Stop Hypertension (DASH) Diet, Exercise + DASH Diet
Behavioral
Lead sponsor
University of Virginia
Other
Eligibility
40 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced Sep 18, 2026, 6:37 AM EDT