Assessing Diet, Stress Scores, and Other Health Metrics in Healthy Northern California Adults

NCT07265648 | Completed

• 1 other identifier: 2337131
• Study Type: observational
• Target: 300
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this study is to gather health and nutrition data from the population of Davis, CA and surrounding areas. This data will be used to help us test and improve our study procedures for a larger planned study on peanut consumption and effects on cardiovascular disease (CVD) risk.

Conditions

Chronic Stress; Stool Frequency; Food Allergies; Diet Surveys; Demographic Data

Keywords

Survey; Observational Study; Online Survey; Stress; Diet; allergens

Outcome Measures

Primary Outcomes (2)

• Perceived Stress Score

  Measured using a validated tool for assessing perceived psychosocial stress within the last month, the Perceived Stress Scale 4 (PSS-4). Participants will report their answers to 4 questions in frequencies ranging from "Never" to "Very Often" on a 5 point scale

  Baseline

• Nut Consumption Frequency and Quantity

  Participants will input frequencies of nut and nut butter consumption and amounts of nuts and nut butter consumed in a typical month, using a modified food frequency questionnaire. Frequency will be reported as values ranging from "Never" to "6 or more times a week". Nut and nut butter consumption will be reported in cups and tablespoons

  Baseline

Secondary Outcomes (9)

• Consumption Frequency of Nut-Containing Foods

  Baseline

• Prevalence of Food Allergies

  Baseline

• Stool Frequency

  Baseline

• Stool Consistency

  Baseline

• Body Mass Index (BMI)

  Baseline

Study Arms (1)

Adults living in and around Davis, CA

Adults 18-65 years old, currently living in Yolo, Sacramento, Solano, Sutter, or Placer counties

Other: Online Survey

Interventions

Online Survey OTHER

Online survey containing a Perceived Stress Score - 4 instrument, a modified food frequency questionnaire, and will measure reported age, sex, geographical location, usage of prescription medications, food allergies, and stool frequency and consistency.

Adults living in and around Davis, CA

Eligibility Criteria

• Age: 18 Years - 65 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Adults 18-65 years old, currently living in Yolo, Sacramento, Solano, Sutter, or Placer counties

You may qualify if:

• Adults 18-65 years old
• Currently living in Yolo, Sacramento, Solano, Sutter, or Placer counties
• Able to complete an online survey written in English, on mobile phone, tablet, or computer

You may not qualify if:

• Previous participation in the study

Sponsors & Collaborators

• USDA, Western Human Nutrition Research Center: lead

Study Sites (1)

USDA Western Human Nutrition Research Center

Davis, California, 95616, United States

Location

MeSH Terms

Conditions

Food Hypersensitivity

Condition Hierarchy (Ancestors)

Hypersensitivity, Immediate; Hypersensitivity; Immune System Diseases

Study Officials

• Ryan Snodgrass, PhD

  United States Department of Agriculture - Western Human Nutrition Research Center

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: FED
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 20, 2025
• First Posted: December 5, 2025
• Study Start: December 8, 2025
• Primary Completion: January 20, 2026
• Study Completion: January 20, 2026
• Last Updated: January 29, 2026

Record last verified: 2026-01

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)