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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Controlled Diet Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Feeding America Intervention Trial for Health--Diabetes Mellitus

NCT02569060
View directory record Official record
Conditions
Diabetes Mellitus
Interventions
Testing and Monitoring of Blood Glucose Levels, Primary care coordination, Diabetes-appropriate food packages, Diabetes self-management education
Other · Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
568 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
4
States / cities
Oakland, California • San Francisco, California • Detroit, Michigan + 1 more
Source: ClinicalTrials.gov public record
Updated May 17, 2020 · Synced Sep 18, 2026, 3:59 PM EDT
Terminated Not applicable Interventional

Investigating a Phosphatidylserine Based Dietary Approach for the Management of Mild Cognitive Impairment

NCT02211560
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
Phosphatidylserine, Placebo
Other
Lead sponsor
Enzymotec
Industry
Eligibility
65 Years to 85 Years
Enrollment
97 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
13
States / cities
Encino, California • Los Alamitos, California • Newport Beach, California + 10 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2018 · Synced Sep 18, 2026, 3:59 PM EDT
Not listed Not applicable Interventional

Consciousness-based Ayurveda Lifestyle Program for Improving Quality of Life in Survivors of Breast Cancer

NCT05743023
View directory record Official record
Conditions
Breast Cancer Survivors
Interventions
Ayurvedic lifestyle protocol
Behavioral
Lead sponsor
Robert Schneider, MD
Other
Eligibility
18 Years and older · Female only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Richmond, California
Source: ClinicalTrials.gov public record
Updated Feb 23, 2023 · Synced Sep 18, 2026, 3:59 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Dietary Fiber Effects on the Microbiome and Satiety

NCT04611217
View directory record Official record
Conditions
Dietary Fiber
Interventions
Dietary fiber: 10-25g, Dietary fiber: 5g
Other
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
20 Years to 55 Years
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 21, 2025 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Not applicable Interventional Results available

Trial of Specific Carbohydrate and Mediterranean Diets to Induce Remission of Crohn's Disease

NCT03058679
View directory record Official record
Conditions
Crohn Disease
Interventions
Diet
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
197 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
35
States / cities
Tucson, Arizona • San Francisco, California • Denver, Colorado + 27 more
Source: ClinicalTrials.gov public record
Updated Jul 20, 2021 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Phase 2 Interventional Results available

Reduced Carbohydrate Versus Fat in Obese Subjects

NCT00846040
View directory record Official record
Conditions
Obesity
Interventions
Reduced fat diet, Reduced carbohydrate diet, Drug: f-18 fallypride, fMRI, PET
Other · Drug · Device
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 45 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 14, 2021 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Phase 1 Interventional

Effect of Quercetin on Green Tea Polyphenol Uptake in Prostate Tissue From Patients With Prostate Cancer Undergoing Surgery

NCT01912820
View directory record Official record
Conditions
Adenocarcinoma of the Prostate, Recurrent Prostate Cancer, Stage I Prostate Cancer, Stage IIA Prostate Cancer, Stage IIB Prostate Cancer, Stage III Prostate Cancer, Stage IV Prostate Cancer
Interventions
green tea extract, quercetin, placebo, therapeutic conventional surgery, laboratory biomarker analysis
Dietary Supplement · Drug · Other + 1 more
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
40 Years to 75 Years · Male only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 22, 2021 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Beverage Hydration Index: Assessment of Four Rehydration Solutions

NCT06272435
View directory record Official record
Conditions
Hydration
Interventions
Multiplier, Sugar Free, Sugar Free with Amino Acids, Water
Dietary Supplement
Lead sponsor
University of Memphis
Other
Eligibility
18 Years to 45 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 15, 2024 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Not applicable Interventional

Multi-Channel Automated Diet and Physical Activity Intervention for Pre-Diabetics

NCT01479062
View directory record Official record
Conditions
Pre-diabetes, Diabetes, Obesity
Interventions
Alive-PD, Usual Care
Behavioral
Lead sponsor
Berkeley Analytics, Inc.
Industry
Eligibility
40 Years to 79 Years
Enrollment
339 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jan 17, 2018 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Inhibitory Control Training in Eating Behaviors

NCT03599115
View directory record Official record
Conditions
Overweight and Obesity
Interventions
Inhibitory Control Training
Behavioral
Lead sponsor
Brigham Young University
Other
Eligibility
18 Years to 45 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Provo, Utah
Source: ClinicalTrials.gov public record
Updated Jul 7, 2020 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Not applicable Interventional

Diabetes Prevention for Mexican Americans

NCT03208010
View directory record Official record
Conditions
Prediabetic State, Overweight and Obesity
Interventions
Diabetes Prevention Intervention, Enhanced Usual Care
Behavioral · Other
Lead sponsor
University of Texas at Austin
Other
Eligibility
25 Years to 65 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Rio Grande City, Texas
Source: ClinicalTrials.gov public record
Updated Oct 16, 2023 · Synced Sep 18, 2026, 3:59 PM EDT
Recruiting Not applicable Interventional

Weight Management Intervention in College: A Pilot

NCT06994923
View directory record Official record
Conditions
Obesity and Overweight
Interventions
BWLI-College, Control
Behavioral
Lead sponsor
The Miriam Hospital
Other
Eligibility
18 Years to 29 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 30, 2025 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

High-fat Meal Challenge in Pediatrics

NCT05230433
View directory record Official record
Conditions
Pediatric Obesity, Insulin Resistance
Interventions
High-fat Challenge
Dietary Supplement
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
8 Years to 17 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Sep 28, 2025 · Synced Sep 18, 2026, 3:59 PM EDT
Active, not recruiting Not applicable Interventional

Nutritional Intervention for Endometriosis

NCT05175248
View directory record Official record
Conditions
Endometriosis
Interventions
Plant-based Intervention Group
Behavioral
Lead sponsor
Physicians Committee for Responsible Medicine
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2029
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Fish Oil and Green Tea Extract in Preventing Prostate Cancer in Patients Who Are at Risk for Developing Prostate Cancer

NCT00253643
View directory record Official record
Conditions
Precancerous Condition, Prostate Cancer
Interventions
green tea catechin extract, fish oil, placebo
Dietary Supplement · Other
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
21 Years to 120 Years · Male only
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2013
U.S. locations
3
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Phase 3 Interventional Results available

Second Line Induction Therapy and Healthy Diet for Patients With Ulcerative Colitis

NCT04505410
View directory record Official record
Conditions
Ulcerative Colitis
Interventions
A plant based high fiber diet that mimics fasting ("FMD") plus advanced therapy, Advanced therapy only without dietary intervention
Other · Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Feb 27, 2025 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Fiber Snack Foods on Dietary Intake in Healthy Adults

NCT01478659
View directory record Official record
Conditions
Fructooligosaccharide
Interventions
Control study food with no added fiber, Study food with added fiber
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 50 Years
Enrollment
97 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 12, 2012 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Phase 2 Interventional Results available

A Study of TAK-062 in Treatment of Active Celiac Disease in Participants Attempting a Gluten-Free Diet

NCT05353985
View directory record Official record
Conditions
Celiac Disease
Interventions
TAK-062, Simulated Inadvertent Gluten Exposure (SIGE) Gluten-Bar, TAK-062 Placebo, Simulated Inadvertent Gluten Exposure (SIGE) Gluten-free Bar
Drug · Dietary Supplement
Lead sponsor
Takeda
Industry
Eligibility
12 Years and older
Enrollment
153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
61
States / cities
Birmingham, Alabama • Litchfield Park, Arizona • Paradise Valley, Arizona + 52 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2025 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Not applicable Interventional

Nature and Health: How Does Lifestyle and Environment Affect Health and Wellness

NCT06001697
View directory record Official record
Conditions
Chronic Disease, Risk Reduction, Mental Health Wellness 1, Physical Inactivity, Sleep, Depression, Anxiety
Interventions
Park prescription, Regular health advice
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
13 Years to 65 Years
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Monroeville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 5, 2025 · Synced Sep 18, 2026, 3:59 PM EDT
Not listed Phase 2 Interventional

Trial of Laparoscopic Cholecystectomy vs. Non-operative Treatment for Gallbladder Dyskinesia

NCT02195115
View directory record Official record
Conditions
Gallbladder Dyskinesia
Interventions
Laparoscopic Cholecystectomy, amitriptyline, low-fat and low cholesterol diet
Procedure · Drug · Other
Lead sponsor
CAMC Health System
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Charleston, West Virginia
Source: ClinicalTrials.gov public record
Updated Mar 4, 2015 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Not applicable Interventional Results available

MOBILE Intervention in College Students With Elevated Blood Pressure

NCT05956925
View directory record Official record
Conditions
Hypertension
Interventions
Intervention group was asked to take their BP daily and rate their motivation level and communicate with the research assistant. Their level will trigger the appropriate behavioral change SMS prompt.
Behavioral
Lead sponsor
University of Nevada, Las Vegas
Other
Eligibility
18 Years to 29 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Aug 18, 2024 · Synced Sep 18, 2026, 3:59 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Infant Restore: Efficacy of Microbiome Analysis and Education

NCT06424691
View directory record Official record
Conditions
Microbiota, Eczema, Microbiome, Gut Microbiome
Interventions
Tailored Recommendations, Consult Call, Email Series
Dietary Supplement · Behavioral
Lead sponsor
Seeding Inc
Industry
Eligibility
0 Months to 3 Months
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Fredericksburg, Texas
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Not applicable Interventional

Glutathione-rich Foods for Type 2 Diabetes

NCT04386187
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
GSH Foods, Nutrition education about glutathione sources in the diet, Standard of care nutrition education for type 2 diabetes
Other
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 20, 2022 · Synced Sep 18, 2026, 3:59 PM EDT
Completed Early Phase 1 Interventional

Early Provision of Enteral Microlipid and Fish Oil to Infants With Enterostomy

NCT01306838
View directory record Official record
Conditions
Short Bowel Syndrome, Necrotizing Enterocolitis, Small Intestine Perforation
Interventions
MicroLipid and fish oil, Routine care
Dietary Supplement · Other
Lead sponsor
Wake Forest University
Other
Eligibility
1 Day to 60 Days
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 14, 2018 · Synced Sep 18, 2026, 3:59 PM EDT