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ClinicalTrials.gov public records Last synced Oct 2, 2026, 3:20 PM EDT

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Showing 25–46 of 46 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: very low calorie diet Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Utilization of Very Low Calorie Diet in Obese General Surgery Patients

NCT03553849
View directory record Official record
Conditions
Morbid Obesity
Interventions
Very low calorie diet
Dietary Supplement
Lead sponsor
Christiana Care Health Services
Other
Eligibility
18 Years to 65 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Jan 28, 2021 · Synced Oct 2, 2026, 3:20 PM EDT
Completed Not applicable Interventional Results available

Optimizing Individual Nutrition in Preterm Very Low Birth Weight Infants

NCT02372136
View directory record Official record
Conditions
Infant, Premature, Diseases, Infant, Small for Gestational Age
Interventions
Individualized Nutrition, Optimized nutrition
Dietary Supplement
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
Up to 7 Days
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jul 3, 2024 · Synced Oct 2, 2026, 3:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Neurohormonal & Behavioral Correlates of Obesity and Weight Loss

NCT02063451
View directory record Official record
Conditions
Obesity
Interventions
Very Low Calorie Diet (VLCD)
Dietary Supplement
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 24, 2018 · Synced Oct 2, 2026, 3:20 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 2, 2026, 3:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Promoting Long-term Behavior Change to Reduce CVD Risk

NCT00227006
View directory record Official record
Conditions
Obesity
Interventions
Behavioral lifestyle/weight-loss intervention
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
25 Years and older
Enrollment
163 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2004
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated May 20, 2015 · Synced Oct 2, 2026, 3:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Maternal Metabolic and Molecular Changes Induced by Preconception Weight Loss and Their Effects on Birth Outcomes

NCT03244722
View directory record Official record
Conditions
Obesity; Familial, Pregnancy Related
Interventions
Very-low energy Diet (VLED), Standard of care (SOC)
Dietary Supplement · Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
147 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2025
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 4, 2026 · Synced Oct 2, 2026, 3:20 PM EDT
Terminated Not applicable Interventional

How Gas-Filled Intragastric Balloons or Endoscopic Sleeve Gastroplasty Affect Hunger, Hunger Hormones, and Gastric Emptying Compared to Meal Replacements

NCT04306445
View directory record Official record
Conditions
Obesity
Interventions
GF-IGB: Obalon Balloon, Medically Supervised Meal Replacement Program: My New Weigh, Endoscopic sleeve gastroplasty: (ESG)
Device · Dietary Supplement · Procedure
Lead sponsor
University of Colorado, Denver
Other
Eligibility
22 Years to 65 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Oct 2, 2026, 3:20 PM EDT
Completed Not applicable Interventional Results available

Intermittent Fasting for the Treatment of Type 2 Diabetes Mellitus

NCT05860413
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Intermittent energy restriction (IER), Time Restricted Eating (TRE)
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 2, 2026, 3:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Diet Induced Weight Loss to Reduce Inflammation in Obese Women

NCT01699906
View directory record Official record
Conditions
Obesity
Interventions
Diet regimen to induce weight loss
Other
Lead sponsor
Rockefeller University
Other
Eligibility
40 Years to 70 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 5, 2014 · Synced Oct 2, 2026, 3:20 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 2, 2026, 3:20 PM EDT
Completed Not applicable Interventional

Very Low Calorie Diet for Diabetic Kidney Disease

NCT01671969
View directory record Official record
Conditions
Diabetic Kidney Disease
Interventions
very low calorie diet
Other
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 28, 2015 · Synced Oct 2, 2026, 3:20 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Uric Acid, Klotho and Salt Sensitivity in Young Adults Born Preterm

NCT04026776
View directory record Official record
Conditions
Salt; Excess, Blood Pressure Disorders
Interventions
Allopurinol, Dietary Intervention
Drug · Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
22 Years to 33 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Oct 2, 2026, 3:20 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 2, 2026, 3:20 PM EDT
Completed Not applicable Interventional

Very Low Calorie Diet Weight Loss

NCT02780206
View directory record Official record
Conditions
Obesity, Very Low Calorie Diet
Interventions
Stable isotope amino acid infusion
Other
Lead sponsor
Texas A&M University
Other
Eligibility
30 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Feb 4, 2022 · Synced Oct 2, 2026, 3:20 PM 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 2, 2026, 3:20 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Complex Effects of Dietary Manipulation on Metabolic Function, Inflammation and Health

NCT02706262
View directory record Official record
Conditions
Obesity, Insulin Resistance
Interventions
Metabolically abnormal obese - Mediterranean diet, Metabolically abnormal obese - Low carbohydrate ketogenic diet, Metabolically abnormal obese - Plant-based, very-low-fat diet, Annual Follow-up Visits
Other · Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 55 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Oct 2, 2026, 3:20 PM EDT
Completed Not applicable Interventional

OPTIMIzing muScle Preservation in paTients wIth Cirrhosis

NCT05367596
View directory record Official record
Conditions
Obesity, Compensated Cirrhosis, Sarcopenia
Interventions
Continuous Energy Restriction (CER), Alternate Day Modified Fasting (ADMF), Group Health Education Sessions, Late Evening Snack, Physical activity, Self-monitoring, Remotely Supervised Exercise Sessions
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Feb 9, 2023 · Synced Oct 2, 2026, 3:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of a Very Low Calorie and Low Calorie Diet on Moderate to Severe Obstructive Sleep Apnea in Obese Adults

NCT02251574
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
Low Calorie Diet, Very Low Calorie Diet, Standard Care
Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years to 75 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Apr 5, 2018 · Synced Oct 2, 2026, 3:20 PM EDT
Completed Not applicable Interventional

KU Alternate Meal Energy Level Study

NCT03696966
View directory record Official record
Conditions
Obesity, Weight Loss
Interventions
Portion-Controlled Meals, Low-Calorie Diet, Intermittent Very-Low Calorie Diet
Dietary Supplement · Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jan 22, 2019 · Synced Oct 2, 2026, 3:20 PM EDT
Completed Not applicable Interventional Results available

Metabolic Changes Induced by a Very Low Carbohydrate Diet in Youth With Type 1 Diabetes

NCT04955691
View directory record Official record
Conditions
Type1diabetes, Low Carbohydrate Diet
Interventions
low carbohydrate diet, standard carbohydrate diet
Other
Lead sponsor
Yale University
Other
Eligibility
12 Years to 21 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 16, 2025 · Synced Oct 2, 2026, 3:20 PM EDT
Recruiting Not applicable Interventional

Effects of Ultra Processed Food on Intestinal Energy Harvest

NCT06853288
View directory record Official record
Conditions
Obesity and Overweight
Interventions
Diet containing 80% ultra processed foods, Diet containing 20% ultra processed foods
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
25 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 3, 2025 · Synced Oct 2, 2026, 3:20 PM EDT
Completed Not applicable Interventional

Improving Maintenance Following Very Low Calorie Diet: The Sustain Lost Weight (SLW) Intervention

NCT01222988
View directory record Official record
Conditions
Obesity
Interventions
Optifast Products
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 17, 2013 · Synced Oct 2, 2026, 3:20 PM EDT