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

The Effect of the DASH Diet Containing Meat on Muscle and Metabolic Health in Older Adults

NCT04127240
View directory record Official record
Conditions
Obesity, Sarcopenia, Aging
Interventions
DASH diet containing daily intakes of red meat
Other
Lead sponsor
South Dakota State University
Other
Eligibility
65 Years and older
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Brookings, South Dakota
Source: ClinicalTrials.gov public record
Updated Oct 14, 2019 · Synced Sep 25, 2026, 6:19 PM EDT
Completed Not applicable Interventional Results available

Evaluation of a Letter Intervention Promoting a Plant-based Diet

NCT03880838
View directory record Official record
Conditions
Cardiovascular Diseases, Diabetes Mellitus, Obesity
Interventions
Personal testimonial, Forks Over Knives Documentary, Commitment nudge, Prevention nudge
Behavioral
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years and older
Enrollment
11,234 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 19, 2025 · Synced Sep 25, 2026, 6:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Novel Metabolites of Beta-Carotene and Lycopene

NCT02550483
View directory record Official record
Conditions
Healthy
Interventions
Base diet + high beta-carotene tomato juice, Base diet + high lycopene tomato juice, Base diet + placebo beverage
Other
Lead sponsor
USDA Beltsville Human Nutrition Research Center
Federal
Eligibility
21 Years to 75 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Beltsville, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 25, 2018 · Synced Sep 25, 2026, 6:19 PM EDT
Completed Not applicable Interventional

Weight Loss Intervention in Women With PCOS

NCT03677362
View directory record Official record
Conditions
Polycystic Ovary Syndrome, Overweight and Obesity
Interventions
Weight loss intervention
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years to 42 Years · Female only
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 31, 2020 · Synced Sep 25, 2026, 6:19 PM EDT
Terminated No phase listed Observational

The Effect of Methotrexate on Sperm Quality in Men With Inflammatory Bowel Disease

NCT02461784
View directory record Official record
Conditions
Inflammatory Bowel Disease (IBD)
Interventions
Semen & Data Collection
Procedure
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 40 Years · Male only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 8, 2023 · Synced Sep 25, 2026, 6:19 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Experimental Approach to Test Predictions of Body Weight Regulation Models

NCT06309576
View directory record Official record
Conditions
Obesity, Underweight
Interventions
Fasting-refeeding cycle
Behavioral
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 40 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Sep 25, 2026, 6:19 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Investigating the Cognitive and Brain Health Benefits of Lean Pork Consumption

NCT07031076
View directory record Official record
Conditions
Dietary Intervention, Dietary Proteins, Dietary Assessment, Older Adults (65 Years and Older), Cognitive Ability, General
Interventions
Ready-to-eat lean pork in frozen, 5-oz packages
Dietary Supplement
Lead sponsor
University of Nebraska Lincoln
Other
Eligibility
65 Years to 75 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Dec 25, 2025 · Synced Sep 25, 2026, 6:19 PM EDT
Recruiting Not applicable Interventional

A Dietary Study for People With Multiple Myeloma

NCT07226609
View directory record Official record
Conditions
Multiple Myeloma
Interventions
nutrition counseling and coaching, dietary guidelines, research dietitian visit, Questionnaires, Frozen pre-prepared meals
Other · Behavioral
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Sep 25, 2026, 6:19 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Kaempferol Absorption and Pharmacokinetics Evaluation

NCT07322406
View directory record Official record
Conditions
No Disease, Mitochondria Health, Longevity, Pharmacokinetics and Biological Absorption of Kaempferol in Healthy Adult, Healthy Volunteers
Interventions
Kaempferol
Dietary Supplement
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 70 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
3
States / cities
New York, New York • Chapel Hill, North Carolina • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 22, 2026 · Synced Sep 25, 2026, 6:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluation of Ovarian Morphology and Function in Overweight Women During Weight Loss

NCT01785719
View directory record Official record
Conditions
Weight Loss, Anovulation, Amenorrhea, Infertility
Interventions
Commercial Weight Loss Program
Behavioral
Lead sponsor
Cornell University
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2023
U.S. locations
1
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Feb 2, 2025 · Synced Sep 25, 2026, 6:19 PM EDT
Active, not recruiting Not applicable Interventional

Product Responsiveness to Enhanced Bioavailability Curcumin Dietary Supplements in Adults

NCT07196046
View directory record Official record
Conditions
Joint Discomfort, Quality of Life (QOL)
Interventions
Supplement 2, Supplement 3, Supplement 1
Dietary Supplement
Lead sponsor
Ultra Botanica LLC
Other
Eligibility
30 Years to 85 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced Sep 25, 2026, 6:19 PM EDT
Completed Not applicable Interventional Results available

Obalon Balloon System Pivotal IDE (SMART) Trial

NCT02235870
View directory record Official record
Conditions
Obesity
Interventions
Obalon Intragastric Balloons, Sham Device, Nutrition and Lifestyle Program
Device · Behavioral
Lead sponsor
Obalon Therapeutics, Inc.
Industry
Eligibility
22 Years to 64 Years
Enrollment
711 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
15
States / cities
Scottsdale, Arizona • Anaheim, California • Coronado, California + 12 more
Source: ClinicalTrials.gov public record
Updated Mar 7, 2018 · Synced Sep 25, 2026, 6:19 PM EDT
Active, not recruiting Not applicable Interventional

Safety and Efficacy of Ketogenic Diet for Promoting Weight Loss in Obese Individuals With Compensated NASH Cirrhosis

NCT04383951
View directory record Official record
Conditions
NASH - Nonalcoholic Steatohepatitis, Cirrhosis, Liver
Interventions
Dietary consult for participants in the ketogenic diet arm, Dietary consult for participants in the standard of care arm
Other
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Sep 25, 2026, 6:19 PM EDT
Completed Phase 2Phase 3 Interventional

A Randomized Trial Comparing Two Doses of Portion-Controlled Foods Within a Primary Care Weight Loss Program

NCT00907660
View directory record Official record
Conditions
Obesity
Interventions
Weight loss counseling, Portion-Controlled Foods
Behavioral · Dietary Supplement
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 29, 2020 · Synced Sep 25, 2026, 6:19 PM EDT
Terminated Not applicable Interventional

Mediterranean Diet and Protein-Sparing Modified Diet for Metabolic Syndrome in Liver Transplant Recipients

NCT02174783
View directory record Official record
Conditions
Liver Transplantation, Metabolic Syndrome X, Obesity
Interventions
Control group, Mediterranean diet, Protein-Sparing Modified Fast (PSMF)
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 13, 2017 · Synced Sep 25, 2026, 6:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bone and Body Composition Adaptations to Physical Training

NCT06972862
View directory record Official record
Conditions
Exercise, Healthy
Interventions
Osteogenic Index Optimized Exercise Training Program
Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 40 Years
Enrollment
206 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
2
States / cities
Lawrence, Kansas • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 16, 2026 · Synced Sep 25, 2026, 6:19 PM EDT
Completed Not applicable Interventional Results available

Targeting Obesity to Optimize Health in Cardiac Rehab (TOPCARE)

NCT03423238
View directory record Official record
Conditions
Obesity, Weight Loss, CHD - Coronary Heart Disease
Interventions
Exercise, Health Education, Exercise Compliance, Calorie-Restricted Diet, Behavioral Modification, Weight-Loss Compliance, Dietary Counseling
Other · Behavioral · Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
40 Years and older
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 22, 2021 · Synced Sep 25, 2026, 6:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Exercise & Diet Effects on CV Risk in Firefighters

NCT03344198
View directory record Official record
Conditions
Cardiovascular Risk Factor, Blood Pressure, Exercise, Diet Modification, Health Promotion
Interventions
Circuit Training exercise & Modified Mediterranean diet
Behavioral
Lead sponsor
University of New Hampshire
Other
Eligibility
18 Years to 70 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
San Marcos, California
Source: ClinicalTrials.gov public record
Updated Aug 6, 2023 · Synced Sep 25, 2026, 6:19 PM EDT
Completed Not applicable Interventional

Improve Medication Adherence Among Stroke Survivors in Rural Kentucky

NCT07084051
View directory record Official record
Conditions
Stroke (CVA) or Transient Ischemic Attack
Interventions
I-MAS
Behavioral
Lead sponsor
Hend Mansoor
Other
Eligibility
30 Years to 90 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jan 25, 2026 · Synced Sep 25, 2026, 6:19 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Assessing Obesity Related Risk Factors in Adult Population: A Genetic and Behavioral Study

NCT07341841
View directory record Official record
Conditions
Obesity Prevention
Interventions
Diet and exercise, Lifestyle Intervention, Exercise
Behavioral
Lead sponsor
Augusta University
Other
Eligibility
18 Years to 70 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 13, 2026 · Synced Sep 25, 2026, 6:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Medifast 5 & 1 Plan

NCT01211301
View directory record Official record
Conditions
Obesity, Body Weight, Weight Loss, Overweight, Nutrition Disorders
Interventions
Food-based, Reduced Energy Diet Plan, Medifast 5 & 1 Plan
Behavioral · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 18, 2013 · Synced Sep 25, 2026, 6:19 PM EDT
Completed Not applicable Interventional

Brain Response to Dietary Interventions

NCT02637271
View directory record Official record
Conditions
Obesity
Interventions
Low calorie total meal replacement, Low calorie typical diet
Other
Lead sponsor
Texas Tech University
Other
Eligibility
19 Years to 60 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Sep 1, 2016 · Synced Sep 25, 2026, 6:19 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Does Dietary and Lifestyle Counseling Prevent Excessive Weight Gain During Pregnancy? A Randomized Controlled Trial

NCT00792480
View directory record Official record
Conditions
Obesity, Pregnancy
Interventions
Dietary and lifestyle counseling
Behavioral
Lead sponsor
Carolinas Medical Center
Other
Eligibility
18 Years to 49 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 17, 2008 · Synced Sep 25, 2026, 6:19 PM EDT
Completed Not applicable Interventional Results available

Piloting a Family-Based Intervention of Time-Restricted Eating to Treat Obesity

NCT05107726
View directory record Official record
Conditions
Childhood Obesity
Interventions
TRE Group
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
3 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Sep 25, 2026, 6:19 PM EDT