Biomarker-estimated Flavanol Intake in Davis (FID)

Running, not enrolling

Conditions studied: Healthy, Diet, Adults

In brief

Flavanols are compounds present in plants, including apples, berries, peaches, cocoa-derived products and certain beverages like tea. Following intake, they are absorbed and broken down into smaller compounds called 'metabolites'. Some of these metabolites are excreted in urine. In this study, we hope to collect urine and examine the metabolites to learn more about the types and amounts of flavanols that people are consuming as part of their usual diet.

Key facts

Study ID: NCT06086145
Run by: University of California, Davis
People needed: 200
Starts: 2023-11-02
Expected to finish: 2026-06-01
Last updated by the study team: 2026-05-07

Who can join

Age: 25 and older, up to 75. Sex: any. Healthy volunteers: accepted.

You may qualify if…

25 - 75 years old
Male or female
BMI 18.5 - 34.9 kg/m2
Weight ≥ 110 pounds
Computer, tablet or smart phone with cellular data/Wi-Fi to establish video call communication

You may not qualify if…

Adults unable to consent
Prisoners
Non-English speaking*
BMI ≥ 35 kg/m2
Indications of substance or alcohol abuse within the last 3 years
Cancer of the GI tract, previous GI surgery (except appendectomy) or GI stoma
History of difficult blood draws
Diarrhea, defined as 3 or more loose or liquid stools/day, within the last 3 months or antibiotic intake within the last 3 months
Currently participating in a clinical or dietary intervention study
Non-English speaking volunteers will be excluded for safety reasons, as we do not have staff that can adequately provide interpretation services that can explain and answer questions with regard to study procedures.

Where it is running

University of California Davis — Davis, California, United States

Full record on ClinicalTrials.gov

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