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Showing 1–24 of 343 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Plant-based Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Improving Protein Intake in Older Adults

NCT05175391
View directory record Official record
Conditions
Food Preferences
Interventions
Meat based protein with added spice; Plant based protein with added spice
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
60 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 9, 2023 · Synced Sep 2, 2026, 5:19 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Healthy Starts: Repeated Exposure Pilot

NCT05639361
View directory record Official record
Conditions
Feeding Behavior
Interventions
Repeated Exposure
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
9 Months to 12 Months
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated May 9, 2023 · Synced Sep 2, 2026, 5:19 AM EDT
Completed Not applicable Interventional

Occupational Therapy and Horticulture for Cancer Survivors With Chronic Pain

NCT03951922
View directory record Official record
Conditions
Cancer Survivor, Chronic Pain
Interventions
Horticultural activity
Behavioral
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years to 64 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Mar 12, 2020 · Synced Sep 2, 2026, 5:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Proportioning Meat and Plant-based Protein-rich Foods on Cardiovascular Disease Risk Factors (S58)

NCT04820829
View directory record Official record
Conditions
Healthy Diet, Cardiovascular Risk Factor
Interventions
High RM, low NSS, Moderate RM, Moderate NSS, Low RM, High NSS
Other
Lead sponsor
Purdue University
Other
Eligibility
30 Years to 69 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 13, 2024 · Synced Sep 2, 2026, 5:19 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Impact of Dietary Intervention on Inflammation and Microbiome Composition Post-Colonoscopy

NCT06603519
View directory record Official record
Conditions
Colorectal Polyp, Inflammation, Dietary Intervention, Microbiota, Colorectal Neoplasms, Metabolomics
Interventions
Modified Plant-Based Mediterranean Diet
Dietary Supplement
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Sep 2, 2026, 5:19 AM 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 2, 2026, 5:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nutritious Eating With Soul (The NEW Soul Study)

NCT03354377
View directory record Official record
Conditions
Cardiovascular Disease Risk Factors, Overweight and Obesity
Interventions
Dietary Intervention Meetings, Physical Activity, Podcasts/Mailings
Behavioral
Lead sponsor
University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
159 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 1, 2023 · Synced Sep 2, 2026, 5:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Stanford Plant-based Educational Study: Providers Learning About Nutrition Together (PLANT)

NCT05678075
View directory record Official record
Conditions
Diet, Healthy
Interventions
Whole-food plant-based nutrition education
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
102 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Feb 12, 2024 · Synced Sep 2, 2026, 5:19 AM EDT
Completed Not applicable Interventional

Diet, Insulin Sensitivity, and Postprandial Metabolism

NCT02939638
View directory record Official record
Conditions
Overweight, Obesity, Insulin Resistance
Interventions
Plant-based diet, Control Diet
Other
Lead sponsor
Physicians Committee for Responsible Medicine
Other
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 18, 2023 · Synced Sep 2, 2026, 5:19 AM EDT
Completed Not applicable Interventional

Practice Based Nutrition Intervention-2

NCT01700868
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
Vegan diet, American Diabetes Association guidelines
Other
Lead sponsor
Physicians Committee for Responsible Medicine
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Oct 19, 2015 · Synced Sep 2, 2026, 5:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Interaction Between Cannabidiol, Meal Ingestion, and Liver Function

NCT04971837
View directory record Official record
Conditions
Metabolism, Liver Function, Pharmacokinetics
Interventions
Cannabidiol (CBD) powder formulation, Cannabidiol (CBD) Oil based tincture formulation, Cannabidiol (CBD) Gum Arabic, maltodextrin base formulation, Cannabidiol (CBD) Gum Arabic, sorbitol base formulation, Cannabidiol (CBD) Isolate in water formulation, CBD matching Placebo
Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 14, 2024 · Synced Sep 2, 2026, 5:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Scalable Nutrition Adherence Intervention

NCT06121986
View directory record Official record
Conditions
Alzheimer Disease, Mild Cognitive Impairment, Adherence
Interventions
Improving Cognitive Aging through Nutrition (ICAN) Adherence Program, Improving Cognitive Aging through Nutrition, Mediterranean diet
Behavioral
Lead sponsor
Florida State University
Other
Eligibility
55 Years to 85 Years
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Sep 2, 2026, 5:19 AM EDT
Not yet recruiting Phase 4 Interventional Accepts healthy volunteers

Central Apnea in Heart Failure: Physiological Mechanisms to Inform Treatment

NCT07210606
View directory record Official record
Conditions
Sleep Disordered Breathing, Able Bodied
Interventions
Trazodone + PAP therapy, Oxygen + PAP therapy
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 6, 2026 · Synced Sep 2, 2026, 5:19 AM EDT
Completed Phase 3 Interventional

The Heart Institute of Spokane Diet Study

NCT00269425
View directory record Official record
Conditions
Myocardial Infarction
Interventions
American Heart Association Step 2 diet, Mediterranean diet
Behavioral
Lead sponsor
Providence Health & Services
Other
Eligibility
18 Years and older
Enrollment
202 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2008
U.S. locations
1
States / cities
Spokane, Washington
Source: ClinicalTrials.gov public record
Updated Aug 23, 2010 · Synced Sep 2, 2026, 5:19 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Genetic Variants and Iron Absorption

NCT02197624
View directory record Official record
Conditions
Iron Absorption
Interventions
Not listed
Lead sponsor
Cornell University
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Jul 22, 2014 · Synced Sep 2, 2026, 5:19 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Introducing a Plant-Based Diet for Patients With Colorectal Diseases

NCT05526846
View directory record Official record
Conditions
Diet, Healthy, Colorectal Cancer
Interventions
Plant-based diet education
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 27, 2024 · Synced Sep 2, 2026, 5:19 AM EDT
Not listed Not applicable Interventional

UCLA Breast Cancer Survivor Health Promotion Research Study

NCT05113485
View directory record Official record
Conditions
Breast Cancer
Interventions
Diabetes Prevention Program-based lifestyle change intervention (DPP), Highly Microbiota-Accessible Foods (HMAFs) intervention
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
50 Years to 75 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 10, 2022 · Synced Sep 2, 2026, 5:19 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Clary Sage Essential Oil & Pregnancy

NCT05000424
View directory record Official record
Conditions
Quality of Life, Pregnancy Related
Interventions
Clary Sage Massage Oil, Inert Massage Oil
Other
Lead sponsor
Nutraceuticals Research Institute
Other
Eligibility
20 Years to 39 Years · Female only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Franklin, Tennessee
Source: ClinicalTrials.gov public record
Updated May 1, 2022 · Synced Sep 2, 2026, 5:19 AM EDT
Recruiting Not applicable Interventional

A Study Comparing a Plant-Based Diet With Supplements and Placebo in People With Monoclonal Gammopathy of Undetermined Significance (MGUS) or Smoldering Multiple Myeloma (SMM)

NCT05640843
View directory record Official record
Conditions
Monoclonal Gammopathy of Undetermined Significance, Smoldering Multiple Myeloma
Interventions
Whole Foods Plant-based Diet, Algae Omega 3 + Curcumin, Placebo supplements
Other · Dietary Supplement
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
8
States / cities
Atlanta, Georgia • Basking Ridge, New Jersey • Middletown, New Jersey + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Sep 2, 2026, 5:19 AM EDT
Completed Not applicable Interventional

A Mediterranean Diet Nutrition Education Program for the Reduction of Cardiovascular Disease Risk in the Southeastern U.S.

NCT03683134
View directory record Official record
Conditions
Cardiovascular Diseases, Cardiovascular Risk Factor, Obesity
Interventions
Mediterranean diet, Olive oil and mixed nuts, American Heart Association
Behavioral · Dietary Supplement
Lead sponsor
Auburn University
Other
Eligibility
19 Years and older
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Auburn, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 26, 2018 · Synced Sep 2, 2026, 5:19 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Treating Smokeless Tobacco Use in Rural Veterans

NCT02994082
View directory record Official record
Conditions
Smokeless Tobacco, Nicotine Dependence
Interventions
Tailored behavioral intervention, Behavioral activation for elevated depressive symptoms, Post-cessation weight gain management, Alcohol use risk reduction, Nicotine replacement therapy - transdermal nicotine patch, Nicotine replacement therapy - nicotine lozenge, Nicotine replacement therapy - nicotine gum, Bupropion sustained release, Varenicline, Combination nicotine replacement therapy, Combination nicotine replacement therapy + bupropion, Tobacco quit line, Educational materials
Behavioral · Drug
Lead sponsor
Mark Vander Weg
Federal
Eligibility
18 Years to 99 Years
Enrollment
123 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 23, 2019 · Synced Sep 2, 2026, 5:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nutrition Interventions for Cognitive Enhancement

NCT03841539
View directory record Official record
Conditions
Alzheimer Disease
Interventions
Mediterranean Diet, Study Supplement, Low-fat Diet
Behavioral · Dietary Supplement
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
65 Years and older
Enrollment
209 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jun 6, 2024 · Synced Sep 2, 2026, 5:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of a Very Low Carbohydrate Ketogenic Diet or Mediterranean Diet on Markers of Musculoskeletal Health in Older Adults

NCT06203392
View directory record Official record
Conditions
Aging, Musculoskeletal Diseases
Interventions
Very low carbohydrate ketogenic diet, Mediterranean diet
Other
Lead sponsor
University of Florida
Other
Eligibility
55 Years to 80 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Sep 2, 2026, 5:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Validation of Plant-Based Vegan Meal for Gastric Emptying Testing in 10 Healthy Subjects

NCT06991036
View directory record Official record
Conditions
Gastric Emptying, Gastroparesis
Interventions
Gastric emptying test
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 24, 2025 · Synced Sep 2, 2026, 5:19 AM EDT