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ClinicalTrials.gov public records Last synced Nov 3, 2026, 6:06 AM EST

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Showing 25–48 of 60 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Walnut Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Activation of Brain Centers by Short-term Walnut Consumption in Obesity

NCT02673281
View directory record Official record
Conditions
Obesity
Interventions
Walnut shake, Placebo shake
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 22, 2023 · Synced Nov 3, 2026, 6:06 AM EST
Completed Not applicable Interventional

Effect of Walnuts on Sperm Parameters and Male Fertility

NCT01954498
View directory record Official record
Conditions
Oligozoospermia, Asthenozoospermia, Teratozoospermia, Fertility
Interventions
Walnuts, OTC multivitamin
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years and older · Male only
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 13, 2026 · Synced Nov 3, 2026, 6:06 AM EST
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

The Effects of an Evening Snack of Walnuts on Diet and Sleep Quality in Adolescents

NCT07862556
View directory record Official record
Conditions
Diet Quality, Sleep
Interventions
Walnuts, Control (usual diet)
Other
Lead sponsor
Penn State University
Other
Eligibility
13 Years to 17 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027 – 2028
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Nov 3, 2026, 6:06 AM EST
Completed Not applicable Interventional Accepts healthy volunteers

Walnuts and Colon Health (The WellNut Trial)

NCT05195970
View directory record Official record
Conditions
Colorectal Cancer, Diet Habit
Interventions
Walnuts
Other
Lead sponsor
UConn Health
Other
Eligibility
39 Years to 75 Years
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
2
States / cities
Farmington, Connecticut • New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 5, 2026 · Synced Nov 3, 2026, 6:06 AM EST
Completed Phase 1Phase 2 Interventional Results available

Walnuts to Achieve Lasting NUTrition to Prevent Diabetes

NCT03334175
View directory record Official record
Conditions
PreDiabetes, Overweight and Obesity
Interventions
Walnuts
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 2, 2020 · Synced Nov 3, 2026, 6:06 AM EST
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 24, 2026 · Synced Nov 3, 2026, 6:06 AM EST
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 27, 2024 · Synced Nov 3, 2026, 6:06 AM EST
Completed Not applicable Interventional Accepts healthy volunteers

Analysis of MicroBial Metabolites After Eating Refined Food

NCT04308473
View directory record Official record
Conditions
Dietary Habits
Interventions
Ultra-processed Food Meal, Whole Food Meal
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Nov 3, 2026, 6:06 AM EST
Completed Phase 3 Interventional Results available

Omalizumab as Monotherapy and as Adjunct Therapy to Multi-Allergen OIT in Food Allergic Participants

NCT03881696
View directory record Official record
Conditions
Peanut Allergy, Multi-food Allergy
Interventions
Omalizumab, Placebo for Omalizumab, Multi-Allergen Oral Immunotherapy, Placebo for Multi-Allergen Oral Immunotherapy, Double-Blind Placebo-Controlled Food Challenge Based Treatment
Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
1 Year to 55 Years
Enrollment
458 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
10
States / cities
Little Rock, Arkansas • Stanford, California • Denver, Colorado + 7 more
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Nov 3, 2026, 6:06 AM EST
Completed Not applicable Interventional Accepts healthy volunteers

Introduction and Maintenance of Still Eating Protein Blends in Support of Infant Nutritional Goals

NCT03667118
View directory record Official record
Conditions
Food Allergy
Interventions
Food Supplement
Dietary Supplement
Lead sponsor
Northwestern University
Other
Eligibility
5 Months to 11 Months
Enrollment
705 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 13, 2019 · Synced Nov 3, 2026, 6:06 AM EST
Terminated Not applicable Interventional

Walnuts and Glucose Variability

NCT01787214
View directory record Official record
Conditions
Type-2 Diabetes
Interventions
Full dose, Half dose, Control
Dietary Supplement
Lead sponsor
Loma Linda University
Other
Eligibility
40 Years to 70 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Mar 18, 2014 · Synced Nov 3, 2026, 6:06 AM EST
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 13, 2021 · Synced Nov 3, 2026, 6:06 AM EST
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Walnuts on Central Blood Pressure, Arterial Stiffness Indices, Lipoproteins, and Other CVD Risk Factors

NCT02210767
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Walnut Diet, Walnut Control Diet, Low ALA Diet
Other
Lead sponsor
Penn State University
Other
Eligibility
30 Years to 65 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 21, 2023 · Synced Nov 3, 2026, 6:06 AM EST
Completed Not applicable Interventional Accepts healthy volunteers

The Mediterranean Diet and Lactation Study: A Diet Study in Lactating Women

NCT01459991
View directory record Official record
Conditions
Breast Feeding
Interventions
Walnut, MyPyramid
Other
Lead sponsor
University of Arizona
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Oct 28, 2011 · Synced Nov 3, 2026, 6:06 AM EST
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of California Walnuts on Vascular Function in Postmenopausal Women

NCT01072864
View directory record Official record
Conditions
Cardiovascular Diseases
Interventions
Walnuts
Other
Lead sponsor
University of California, Davis
Other
Eligibility
50 Years to 70 Years · Female only
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Nov 1, 2010 · Synced Nov 3, 2026, 6:06 AM EST
Completed Not applicable Interventional

Yeahhh Baby! Ointment on Hip and/or Knee Pain in Men and Women

NCT04764552
View directory record Official record
Conditions
Joint Pain
Interventions
Yeahhh Baby Ointment, Coconut oil ointment
Dietary Supplement · Other
Lead sponsor
University of Memphis
Other
Eligibility
35 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 29, 2021 · Synced Nov 3, 2026, 6:06 AM EST
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 28, 2016 · Synced Nov 3, 2026, 6:06 AM EST
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 5, 2019 · Synced Nov 3, 2026, 6:06 AM EST
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 31, 2026 · Synced Nov 3, 2026, 6:06 AM EST
Completed Not applicable Interventional Results available

Nuts and Oil Pilot Study

NCT04361617
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
Daily consumption of tree nuts and extra virgin olive oil
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
35 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 18, 2023 · Synced Nov 3, 2026, 6:06 AM EST
Completed Not applicable Interventional Accepts healthy volunteers

Black Walnuts and Health

NCT04849949
View directory record Official record
Conditions
Healthy
Interventions
Control, Black walnut, English walnut
Other
Lead sponsor
University of Georgia
Other
Eligibility
18 Years to 45 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 20, 2021 · Synced Nov 3, 2026, 6:06 AM EST
Recruiting Phase 2 Interventional

Phase 2b Study of RPT904 as Monotherapy in Participants With IgE-Mediated Food Allergy

NCT07220811
View directory record Official record
Conditions
Ig-E Mediated Food Allergy
Interventions
RPT904, Placebo
Drug · Other
Lead sponsor
RAPT Therapeutics, Inc., a member of the GSK plc group of companies
Industry
Eligibility
12 Years to 55 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
22
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Palo Alto, California + 18 more
Source: ClinicalTrials.gov public record
Updated Jul 28, 2026 · Synced Nov 3, 2026, 6:06 AM EST
Completed Not applicable Interventional Accepts healthy volunteers

Walnut and Immunity Study

NCT05915390
View directory record Official record
Conditions
Immune Response, Upper Respiratory Tract Infection
Interventions
walnuts, Habitual diet
Dietary Supplement
Lead sponsor
Loma Linda University
Other
Eligibility
55 Years to 75 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Oct 2, 2024 · Synced Nov 3, 2026, 6:06 AM EST
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Walnuts on Antioxidant Capacity and Nutritional Status in Humans

NCT00626691
View directory record Official record
Conditions
Healthy
Interventions
Walnut consumption
Behavioral
Lead sponsor
Tufts University
Other
Eligibility
50 Years and older
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 19, 2009 · Synced Nov 3, 2026, 6:06 AM EST