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ClinicalTrials.gov public records Last synced Oct 16, 2026, 10:49 PM EDT

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Showing 1–24 of 168 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Dietary intervention (calorie restricted diet) Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Promoting Weight-Loss in African American Cancer Survivors in the Deep South

NCT03150381
View directory record Official record
Conditions
Weight Loss, Cancer
Interventions
Weight Loss Only, Weight Loss Plus, Control
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years and older
Enrollment
369 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2018
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated May 16, 2018 · Synced Oct 16, 2026, 10:49 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Fatigue in Long-Haul Operations

NCT07761611
View directory record Official record
Conditions
Alertness, Fatigue, Mood, and Performance, Calorie Restriction and Light Intervention
Interventions
Caloric restriction, Light exposure
Behavioral · Device
Lead sponsor
National Aeronautics and Space Administration (NASA)
Federal
Eligibility
18 Years and older
Enrollment
118 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Mountain View, California
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Oct 16, 2026, 10:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Metabolism and Bariatric Surgery Study

NCT03371368
View directory record Official record
Conditions
Insulin Resistance, Obesity
Interventions
Roux-en-Y Gastric Bypass (RYGBP), Sleeve Gastrectomy (SG), Very Low Calorie Diet (VLCD)
Procedure · Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 65 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 7, 2025 · Synced Oct 16, 2026, 10:49 PM EDT
Completed Not applicable Interventional Results available

Effect of Low Carbohydrate Versus Low Fat Diet in the Treatment of Dyslipidemia in Obese Children With Metabolic Syndrome

NCT03937960
View directory record Official record
Conditions
Metabolic Syndrome, Obesity, Dyslipidemias
Interventions
Carbohydrate restricted group, Standard low fat diet
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
10 Years to 18 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
2
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Dec 22, 2022 · Synced Oct 16, 2026, 10:49 PM EDT
Completed Not applicable Interventional Results available

ACT1ON Phase 2 (SMART Pilot) and Phase 3 (Efficacy Trial Development)

NCT03651622
View directory record Official record
Conditions
Diabetes Mellitus, Type 1, Overweight and Obesity
Interventions
Hypocaloric, low carbohydrate diet, Hypocaloric, moderate low fat diet, Mediterranean diet, no caloric restriction
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
19 Years to 30 Years
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
2
States / cities
Palo Alto, California • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 4, 2022 · Synced Oct 16, 2026, 10:49 PM EDT
Completed No phase listed Observational

EMPOWER-PULM (PULMonary Outcomes in Older Adults Empowered With Movement to Prevent Obesity and Weight Regain)

NCT03621098
View directory record Official record
Conditions
Obesity, Pulmonary Disease, Dyspnea
Interventions
Not listed
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
65 Years to 85 Years
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 6, 2019 · Synced Oct 16, 2026, 10:49 PM EDT
Active, not recruiting Not applicable Interventional

Effect of VLCD on the Reduction of Liver Steatosis and Fibrosis in Subjects With Obesity and NAFLD

NCT04861571
View directory record Official record
Conditions
NAFLD
Interventions
Dietary intervention with very low calorie diet (VLCD), Control Arm
Dietary Supplement · Other
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Oct 16, 2026, 10:49 PM EDT
Completed Not applicable Interventional

Dyad Plus Effectiveness/Feasibility

NCT04036331
View directory record Official record
Conditions
Weight Loss, Pediatric Obesity, Overweight Adolescents, Parent-Child Relations, Family and Household
Interventions
Brenner FIT Standard, By Design Essentials, Dyad Plus
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
13 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 16, 2026, 10:49 PM EDT
Withdrawn Not applicable Interventional

A Sleep Extension Pilot Study in Adults With Obesity

NCT05747105
View directory record Official record
Conditions
Obesity, Sleep, Weight, Body, Eating Behavior, Blood Pressure, Quality of Life
Interventions
Sleep Extension
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 50 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 19, 2023 · Synced Oct 16, 2026, 10:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Mediterranean Diet, Weight Loss, and Cognition in Obese Older Adults

NCT03129048
View directory record Official record
Conditions
Cognition, Obese Older Adults, Mediterranean Diet
Interventions
MedDiet
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
55 Years to 85 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 8, 2021 · Synced Oct 16, 2026, 10:49 PM EDT
Completed Phase 1 Interventional

RYGB and the Gastric Adipose Axis

NCT01474785
View directory record Official record
Conditions
Obesity
Interventions
human ghrelin, very low calorie diet, Hyperinsulinemic/Euglycemic Clamp
Drug · Other · Procedure
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 65 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 21, 2018 · Synced Oct 16, 2026, 10:49 PM EDT
Completed Not applicable Interventional

Reducing Weight and Diabetes Risk in an Underserved Population (STRIDE)

NCT00790517
View directory record Official record
Conditions
Weight Loss, Diabetes Mellitus, Type 2, Psychotic Disorders
Interventions
Premier Lifestyle Intervention with DASH Diet
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
3
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 16, 2026, 10:49 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

The Effect of Tirzepatide on Menopausal Vasomotor Symptoms and Biological Aging in Post-menopausal Women With Obesity

NCT07218445
View directory record Official record
Conditions
Obesity, Menopause Hot Flashes
Interventions
Tirzepatide, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
46 Years to 60 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 16, 2026, 10:49 PM EDT
Terminated Phase 3 Interventional Results available

Effect of Weight and Insulin Sensitivity on Reproductive Function in PCOS

NCT01482286
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
Metformin, Dietary Restriction, Exercise Training
Drug · Behavioral
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
20 Years to 40 Years · Female only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 15, 2022 · Synced Oct 16, 2026, 10:49 PM EDT
Active, not recruiting Not applicable Interventional

Evaluating the Influence of Diet-induced Weight Loss on Fat (Adipose) Tissue's Insulin Sensitivity and Testosterone Synthesis in Women With Overweight or Obesity, Insulin Resistance, and Hyperandrogenemia

NCT06998238
View directory record Official record
Conditions
Overweight and Obesity, Hyperandrogenemia, Insulin Resistance
Interventions
Mediterranean-based, carbohydrate restricted, calorie reduced diet
Behavioral
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 17, 2026 · Synced Oct 16, 2026, 10:49 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Project 1: Diet and Exercise Modulate the Sperm Epigenome in Men

NCT04175678
View directory record Official record
Conditions
Healthy Lifestyle, Obese, Men
Interventions
Diet, Exercise, Standard care
Other
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Other
Eligibility
18 Years to 40 Years · Male only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Oct 16, 2026, 10:49 PM EDT
Completed Not applicable Interventional Results available

Exercise Intolerance in Elderly Patients With Diastolic Heart Failure

NCT00959660
View directory record Official record
Conditions
Heart Failure, Diastolic, Obesity
Interventions
Exercise, Dietary Intervention, Diet and exercise, Attention Control
Behavioral · Dietary Supplement · Other
Lead sponsor
Wake Forest University
Other
Eligibility
60 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 15, 2019 · Synced Oct 16, 2026, 10:49 PM EDT
Completed Not applicable Interventional

Diabetes Dietary Study- Low Carbohydrate and Low-Fat Diets in Type 2 Diabetes

NCT00795691
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
low-carbohydrate diet, low-fat diet
Behavioral
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jul 12, 2019 · Synced Oct 16, 2026, 10:49 PM 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 11, 2022 · Synced Oct 16, 2026, 10:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Pilot Study of Time Restricted Feeding as a Weight Loss Intervention

NCT03571048
View directory record Official record
Conditions
Obesity
Interventions
Reduced Calorie Diet (RCD), Time Restricted Feeding (TRF)
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 50 Years
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 25, 2022 · Synced Oct 16, 2026, 10:49 PM EDT
Completed Not applicable Interventional

Noninvasive Neuromodulation of the Prefrontal Cortex in Subjects With Obesity

NCT02953353
View directory record Official record
Conditions
Obesity
Interventions
Active transcranial direct current stimulation (tDCS), Hypocaloric diet, Sham transcranial direct current stimulation (tDCS)
Device · Other
Lead sponsor
University of Sao Paulo
Other
Eligibility
20 Years to 40 Years · Female only
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 22, 2021 · Synced Oct 16, 2026, 10:49 PM EDT
Completed Not applicable Interventional

The TREND Study: Tapered Reduction in Energy Intake as a Novel Approach to Dieting

NCT02837211
View directory record Official record
Conditions
Obesity
Interventions
Tapered Low Calorie Diet, Traditional Low-Calorie Diet
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 45 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 21, 2018 · Synced Oct 16, 2026, 10:49 PM EDT
Not listed Not applicable Interventional

Acceptability and Feasibility of a Preoperative Very Low Calorie Diet Intervention on Surgical Weight Loss Outcomes (SAFETY)

NCT06183034
View directory record Official record
Conditions
Obesity
Interventions
Very Low Calorie Diet
Other
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 28, 2024 · Synced Oct 16, 2026, 10:49 PM EDT
Not yet recruiting Phase 4 Interventional

Semaglutide and Structured Lifestyle Support to Improve Heart and Blood Vessel Health in Postmenopausal Obese Breast Cancer Survivors Taking Aromatase Inhibitors

NCT07769047
View directory record Official record
Conditions
Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8
Interventions
Biospecimen Collection, Dual X-ray Absorptiometry, Functional Assessment, Lifestyle Counseling, Semaglutide
Procedure · Other · Behavioral + 1 more
Lead sponsor
Mayo Clinic
Other
Eligibility
46 Years to 55 Years · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2035
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Oct 16, 2026, 10:49 PM EDT