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Showing 25–39 of 15 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Walnut Diet Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Metabolism, Exercise and Nutrition at UCSD (MENU Study)

NCT01424007
View directory record Official record
Conditions
Obese, Nondiabetic
Interventions
Weight loss
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years and older · Female only
Enrollment
245 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2016
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jul 4, 2019 · Synced Sep 23, 2026, 11:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Walnuts and Healthy Aging

NCT01634841
View directory record Official record
Conditions
Age Related Cognitive Decline, Age Related Macular Degeneration
Interventions
Walnuts, habitual diet
Dietary Supplement · Other
Lead sponsor
Loma Linda University
Other
Eligibility
63 Years to 79 Years
Enrollment
708 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Jun 23, 2021 · Synced Sep 23, 2026, 11:42 AM EDT
Completed Not applicable Interventional

Effects of Walnuts on Endothelial Function in Overweight Adults With at Least One Factor of Metabolic Syndrome

NCT01413646
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
Walnut Supplementation, No walnut supplementation
Dietary Supplement
Lead sponsor
Griffin Hospital
Other
Eligibility
25 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
1
States / cities
Derby, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 1, 2019 · Synced Sep 23, 2026, 11:42 AM EDT
Completed Not applicable Interventional

Snacking, Satiety &Weight: A Randomized, Controlled Trial

NCT02050165
View directory record Official record
Conditions
Obesity
Interventions
KIND Bars, Typical American Snack
Dietary Supplement
Lead sponsor
Griffin Hospital
Other
Eligibility
25 Years to 75 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Derby, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 25, 2020 · Synced Sep 23, 2026, 11:42 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Walnut Oral Immunotherapy for Tree Nut Allergy

NCT01546753
View directory record Official record
Conditions
Tree Nut Allergy
Interventions
Walnut Protein Powder, Oat Powder (placebo), Open-label Walnut Protein Powder
Drug
Lead sponsor
University of Arkansas
Other
Eligibility
6 Years to 45 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2020
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated May 11, 2023 · Synced Sep 23, 2026, 11:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Metabolic Effects of Short-term Walnut Consumption in Subjects With the Metabolic Syndrome

NCT00525629
View directory record Official record
Conditions
Metabolic Syndrome, Type 2 Diabetes, Cardiovascular Disease
Interventions
Walnuts, Control
Dietary Supplement
Lead sponsor
Christos Mantzoros
Other
Eligibility
40 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 14, 2017 · Synced Sep 23, 2026, 11:42 AM EDT
Completed Not applicable Interventional

A Mediterranean Diet Nutrition Education Program for the Reduction of Cardiovascular Disease Risk in the Southeastern U.S.

NCT03683134
View directory record Official record
Conditions
Cardiovascular Diseases, Cardiovascular Risk Factor, Obesity
Interventions
Mediterranean diet, Olive oil and mixed nuts, American Heart Association
Behavioral · Dietary Supplement
Lead sponsor
Auburn University
Other
Eligibility
19 Years and older
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Auburn, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 26, 2018 · Synced Sep 23, 2026, 11:42 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Benefits of Walnuts for Male Reproductive Health

NCT01505140
View directory record Official record
Conditions
Infertility, Nutrition Disorders
Interventions
Whole walnuts
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years to 35 Years · Male only
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 27, 2016 · Synced Sep 23, 2026, 11:42 AM EDT
Completed Not applicable Interventional

Walnut Ingestion in Adults at Risk for Diabetes: Effects on Body Composition, Diet Quality, and Cardiac Risk Measures

NCT02330848
View directory record Official record
Conditions
Diabetes
Interventions
Walnut Ad libitum diet, Walnut Calorie controlled
Dietary Supplement
Lead sponsor
Griffin Hospital
Other
Eligibility
25 Years to 75 Years
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Derby, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 25, 2020 · Synced Sep 23, 2026, 11:42 AM EDT
Completed Not applicable Interventional

Effect of Daily Walnut Consumption on Memory in Subjects With Long-COVID

NCT07429903
View directory record Official record
Conditions
Long-COVID, Brain Fog, Cognition, Memory
Interventions
whole food - walnuts
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
40 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Sep 23, 2026, 11:42 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Mechanistic Effect of Walnut Consumption on Sleep Quality

NCT06430086
View directory record Official record
Conditions
Poor Sleep Quality
Interventions
Walnut consumption, HCHS consumption
Other
Lead sponsor
Columbia University
Other
Eligibility
45 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Sep 23, 2026, 11:42 AM EDT
Recruiting Phase 2 Interventional

WALNUTS for POWER: Polyphenols, Omega-3 Fatty Acids, Weight Loss, and EneRgy

NCT03824652
View directory record Official record
Conditions
Prostate Cancer
Interventions
walnuts, usual diet, phone counseling with dietitian
Other
Lead sponsor
Stephen Freedland
Other
Eligibility
18 Years and older · Male only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 9, 2026 · Synced Sep 23, 2026, 11:42 AM EDT
Not listed Not applicable Interventional

Metabolomics Initiative: Mediterranean-amplified vs Habitual Western Diet on Food Signatures, Health, and Microbiome

NCT05500976
View directory record Official record
Conditions
Dietary Habits
Interventions
Semi-controlled dietary intervention - Western, Semi-controlled dietary intervention - MiniMed
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
30 Years to 69 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 26, 2024 · Synced Sep 23, 2026, 11:42 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Infancy to Toddlerhood: Early Nutrition & Tolerance (INTENT)

NCT04803981
View directory record Official record
Conditions
Diet Diversity, Infant Nutrition
Interventions
SpoonfulONE
Other
Lead sponsor
Before Brands, Inc
Industry
Eligibility
4 Months to 6 Months
Enrollment
1,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 12, 2021 · Synced Sep 23, 2026, 11:42 AM EDT
Recruiting Not applicable Interventional

Snacking Effects on the Brain Response to Foods and Satiety During Dieting

NCT07428187
View directory record Official record
Conditions
Overweight/Obesity
Interventions
Snack Type 1: Walnuts, Snack Type 2: Pretzels
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
25 Years to 45 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 22, 2026 · Synced Sep 23, 2026, 11:42 AM EDT