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ClinicalTrials.gov public records Last synced Oct 19, 2026, 2:02 AM EDT

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Showing 1–24 of 392 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Low Calorie Diet Clear all
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 19, 2026, 2:02 AM 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 19, 2026, 2:02 AM EDT
Completed Not applicable Interventional

Intensive Diet and Exercise for Improving Knee Osteoarthritis in Obese and Overweight Older Adults

NCT00381290
View directory record Official record
Conditions
Osteoarthritis
Interventions
Diet, Exercise
Behavioral
Lead sponsor
Wake Forest University
Other
Eligibility
55 Years and older
Enrollment
454 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 6, 2017 · Synced Oct 19, 2026, 2:02 AM 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 19, 2026, 2:02 AM EDT
Completed Not applicable Interventional

Solutions for Hunger And Regulating Eating

NCT05004883
View directory record Official record
Conditions
Overweight and Obesity
Interventions
Regulation of Cues Enhanced, Behavioral Weight Loss, Nutrition Education, Stress Management and Social Support
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 65 Years
Enrollment
293 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Sep 10, 2026 · Synced Oct 19, 2026, 2:02 AM 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 19, 2026, 2:02 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Healthy Eating for Reproductive Health: Greenville

NCT01716429
View directory record Official record
Conditions
Polycystic Ovarian Syndrome, Infertility, Obesity, Overweight
Interventions
Vegan diet, Low calorie diet
Behavioral
Lead sponsor
University of South Carolina
Other
Eligibility
18 Years to 35 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Greenville, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 18, 2019 · Synced Oct 19, 2026, 2:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Small Bowel Microbiota Characterization in Healthy Individuals Before and After Consumption of a Western Diet

NCT03266536
View directory record Official record
Conditions
Small Intestine Bacteria
Interventions
Western diet
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 4, 2022 · Synced Oct 19, 2026, 2:02 AM EDT
Active, not recruiting Not applicable Interventional Results available

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

NCT04920084
View directory record Official record
Conditions
Monoclonal Gammopathy of Undetermined Significance, Smoldering Multiple Myeloma
Interventions
Plant based meals
Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Oct 19, 2026, 2:02 AM EDT
Completed Not applicable Interventional

Cooperative Lifestyle Programs (CLIP-II)

NCT01547182
View directory record Official record
Conditions
Cardiovascular Disease, Obesity, Physical Disability
Interventions
Caloric restriction, Aerobic Training, Resistance Training
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
60 Years to 79 Years
Enrollment
249 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
3
States / cities
Kernersville, North Carolina • Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 15, 2018 · Synced Oct 19, 2026, 2:02 AM EDT
Completed Not applicable Interventional

Diet Study on Ulcerative Colitis

NCT04147598
View directory record Official record
Conditions
Ulcerative Colitis
Interventions
LFD, SAD
Other
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 70 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Nov 1, 2019 · Synced Oct 19, 2026, 2:02 AM EDT
Terminated Phase 3 Interventional

A 14-Month Study On The Effects Of CP-945,598 For The Prevention Of Weight Regain In Obese Patients

NCT00483171
View directory record Official record
Conditions
Obesity
Interventions
CP-945,598, Non-pharmacological weight loss program (NPP), Low Calorie Diet
Drug · Behavioral
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 70 Years
Enrollment
699 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
9
States / cities
La Jolla, California • Denver, Colorado • Baton Rouge, Louisiana + 6 more
Source: ClinicalTrials.gov public record
Updated Nov 7, 2012 · Synced Oct 19, 2026, 2:02 AM EDT
Completed Not applicable Interventional

Understanding the Paradoxical Rise in Blood Glucose in the Context of a Low-carbohydrate Diet

NCT07713316
View directory record Official record
Conditions
Elevated Blood Glucose, Low-carbohydrate Diet
Interventions
Carbohydrate Drink, Fat Drink, Protein Drink
Dietary Supplement
Lead sponsor
Brigham Young University
Other
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Provo, Utah
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Oct 19, 2026, 2:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Preliminary Effect of Food Processing and Sweeteners on Glycemic and Metabolic Measures

NCT05658757
View directory record Official record
Conditions
Blood Sugar; High, Blood Pressure, Dietary Habits
Interventions
Regular sweetened commercial foods, Allulose sweetened commercial foods, Whole and minimally processed and sweetened foods
Other
Lead sponsor
University of California, Irvine
Other
Eligibility
20 Years to 99 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated May 3, 2023 · Synced Oct 19, 2026, 2:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Mediterranean Style Diet and Low Glycemic Responses

NCT03410719
View directory record Official record
Conditions
Insulin Sensitivity
Interventions
Hi GI
Other
Lead sponsor
Purdue University
Other
Eligibility
30 Years to 69 Years
Enrollment
166 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jul 17, 2020 · Synced Oct 19, 2026, 2:02 AM EDT
Completed Not applicable Interventional

Oxidative Stress in Chronic Kidney Disease: Diet and Exercise

NCT01150851
View directory record Official record
Conditions
Chronic Kidney Disease
Interventions
caloric restriction, aerobic exercise
Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 75 Years
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
4
States / cities
Springfield, Massachusetts • Nashville, Tennessee • Seattle, Washington + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 25, 2014 · Synced Oct 19, 2026, 2:02 AM EDT
Terminated Not applicable Interventional

Ketogenic Diet in Patients With Heart Failure

NCT04235699
View directory record Official record
Conditions
Heart Failure With Preserved Ejection Fraction
Interventions
Nutritional and Dietary Manipulation
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 75 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 24, 2024 · Synced Oct 19, 2026, 2:02 AM 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 19, 2026, 2:02 AM 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 19, 2026, 2:02 AM EDT
Withdrawn Not applicable Interventional

Cross-over Pilot Study of Blood Cholesterol Response to Dietary Saturated Fat in Patients With Autosomal Dominant Hypercholesterolemia

NCT03756779
View directory record Official record
Conditions
Familial Hypercholesterolemia
Interventions
Dietary intervention
Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Nov 28, 2018 · Synced Oct 19, 2026, 2:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dietary Intake and Circulating Levels of Branched Chain Amino Acids

NCT02110602
View directory record Official record
Conditions
Dietary Intake of Branched Chain Amino Acids
Interventions
Diet high in amino acid levels, Diet low in amino acid levels
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
20 Years to 40 Years · Male only
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 7, 2016 · Synced Oct 19, 2026, 2:02 AM EDT
Terminated Phase 2 Interventional Results available

A Study To Examine The Efficacy And Safety Of Pramlintide+Metreleptin In Obese Subjects

NCT01235741
View directory record Official record
Conditions
Obesity
Interventions
Pramlintide+Metreleptin, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 65 Years
Enrollment
213 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
18
States / cities
Greenbrae, California • La Jolla, California • Denver, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Apr 15, 2015 · Synced Oct 19, 2026, 2:02 AM 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 19, 2026, 2:02 AM 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 19, 2026, 2:02 AM EDT