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Showing 1–24 of 39 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Walnut Diet Clear all
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 6, 2026, 3:05 AM EDT
Completed Not applicable Interventional

Effects of Walnut Consumption on Endothelial Function in Type 2 Diabetes

NCT00901043
View directory record Official record
Conditions
DIABETES MELLITUS TYPE 2
Interventions
Walnut supplementation, Ad lib diet
Dietary Supplement
Lead sponsor
Griffin Hospital
Other
Eligibility
35 Years to 75 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Derby, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 25, 2020 · Synced Sep 6, 2026, 3:05 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 6, 2026, 3:05 AM EDT
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 1, 2024 · Synced Sep 6, 2026, 3:05 AM EDT
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 17, 2023 · Synced Sep 6, 2026, 3:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Influence of Walnut Intake on Vascular Function and Metabolism

NCT03900403
View directory record Official record
Conditions
Overweight and Obesity, Endothelial Dysfunction, Cardiovascular Risk Factor
Interventions
Walnut Intake
Other
Lead sponsor
University of California, Davis
Other
Eligibility
45 Years to 65 Years · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Aug 30, 2023 · Synced Sep 6, 2026, 3:05 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 6, 2026, 3:05 AM EDT
Active, not recruiting Not applicable Interventional

Response of Cardiometabolic Biomarkers and Gut Microbiota to Walnut Consumption

NCT05321277
View directory record Official record
Conditions
Cardiovascular Diseases
Interventions
Walnuts, No-nut diet
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
45 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Sep 6, 2026, 3:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nuts and Olestra for Persistent Organic Pollutant Reduction (NO-POPs) Trial

NCT02675101
View directory record Official record
Conditions
Persistent Organic Pollutants, Endocrine Disrupting Chemicals, Endocrine Disruptor Effects
Interventions
Whole Nuts, Olestra: Fat Free Pringles, Vegetable Oil: Original Pringles
Other
Lead sponsor
University of California, San Diego
Other
Eligibility
45 Years to 70 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jul 4, 2019 · Synced Sep 6, 2026, 3:05 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 6, 2026, 3:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Mastication on Energy Release From Walnuts

NCT02927028
View directory record Official record
Conditions
Obesity
Interventions
Chewing
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 60 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Dec 11, 2023 · Synced Sep 6, 2026, 3:05 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 6, 2026, 3:05 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Response of Gut Microbiota and Cardiometabolic Biomarkers to Consumption of Walnuts

NCT04307628
View directory record Official record
Conditions
Healthy, Normal Weight, Overweight, Obese
Interventions
Walnut, Nut-Free
Other
Lead sponsor
University of California, Davis
Other
Eligibility
20 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Sep 6, 2026, 3:05 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 6, 2026, 3:05 AM EDT
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 20, 2023 · Synced Sep 6, 2026, 3:05 AM EDT
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 27, 2011 · Synced Sep 6, 2026, 3:05 AM EDT
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 12, 2019 · Synced Sep 6, 2026, 3:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Walnuts and Colon Health

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 Apr 16, 2026 · Synced Sep 6, 2026, 3:05 AM EDT
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 1, 2020 · Synced Sep 6, 2026, 3:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Pomegranate Juice Consumption on the Health of Mothers and Infants During Breastfeeding

NCT04341961
View directory record Official record
Conditions
Breastfeeding
Interventions
Pomegranate Juice
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older · Female only
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 3, 2020 · Synced Sep 6, 2026, 3:05 AM EDT
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
471 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 9, 2025 · Synced Sep 6, 2026, 3:05 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 6, 2026, 3:05 AM EDT
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 24, 2026 · Synced Sep 6, 2026, 3:05 AM EDT
Recruiting Not applicable Interventional

Essential Fats For Enhancing Cognitive Thinking (EFFECT) Study

NCT06223672
View directory record Official record
Conditions
Cognitive Decline, Cognitive Impairment
Interventions
Walnuts, Simply White Diary-free chocolate bar
Other
Lead sponsor
Ohio State University
Other
Eligibility
40 Years to 75 Years
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Sep 6, 2026, 3:05 AM EDT