Food Matrix Effect on Flavanol Absorption, Metabolism and Excretion: Methylxanthines

Completed · Not applicable

Conditions studied: Healthy

In brief

Dietary intervention study in healthy young adult males to evaluate concentration of flavanol metabolites in plasma and urine after single acute intakes of methylxanthines.

Key facts

Study ID

NCT03526107

Run by

University of California, Davis

People needed

10

Starts

2017-02-16

Expected to finish

2017-05-31

Last updated by the study team

2022-10-10

Who can join

Age: 25 and older, up to 60. Sex: male. Healthy volunteers: accepted.

You may qualify if…

• No prescription medications
• BMI 18.5 - 29.9 kg/m2
• Weight ≥ 110 pounds
• previously consumed cocoa, peanut, parsley, celery and chamomile products with no adverse reactions

You may not qualify if…

• Adults unable to consent
• Prisoners
• Non-English speaking*
• BMI ≥ 30 kg/m2
• Performing vigorous physical activity (i.e. more than 6 MET; metabolic equivalence of task as defined by CDC and ACSM guidelines (http://www.cdc.gov/physicalactivity/everyone/glossary/index.html#vig-intensity; and http://www.cdc.gov/nccdphp/dnpa/physical/pdf/PA_Intensity_table_2_1.pdf ) for more than 3 days a week.
• Dietary allergies including those to nuts, cocoa and chocolate products, parsley, celery and chamomile.
• Active avoidance of coffee and caffeinated soft drinks
• Under current medical supervision
• A history of cardiovascular disease, stroke, renal, hepatic, or thyroid disease
• History of clinically significant depression, anxiety or other psychiatric condition
• History of Raynaud's disease
• History of difficult blood draws
• Indications of substance or alcohol abuse within the last 3 years
• Current use of herbal, plant or botanical supplements (multi-vitamin/mineral supplements are allowed)
• Blood Pressure > 140/90 mm Hg
• GI tract disorders, previous GI surgery (except appendectomy)
• Self-reported malabsorption (e.g. difficulty digesting or absorbing nutrients from food, potentially leading to bloating, cramping or gas)
• Diarrhea within the last 3 months, or antibiotic intake within the last 3 months
• Vegetarian, Vegan, food faddists, individuals using non-traditional diets, on a weight loss diet or individuals following diets with significant deviations from the average diet
• Metabolic panel and cholesterol results or complete blood counts that are outside of the normal reference range and are considered clinically relevant by the study physician
• Cold, flu, or upper respiratory condition at screening
• Currently participating in a clinical or dietary intervention study

Where it is running

• Ragle Human Nutrition Research Center, Department of Nutrition at UC Davis — Davis, California, United States
• UC Davis — Davis, California, United States

Full record on ClinicalTrials.gov

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