Urinary Excretion of Anthocyanins During Long Term Blueberry Feeding

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

17 participants

Study Classification

INTERVENTIONAL

Study Start Date

2012-11-30

Study Completion Date

2012-12-31

Brief Summary

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Essentially all of the published data on anthocyanin absorption in humans are from short term studies - a few days or less, most typically 24 h. However human studies demonstrating clinical effects are typically conducted for several weeks or even months. To examine how anthocyanin absorption and metabolism may be affected this study will examine urinary excretion of anthocyanins over one month, followed by a one week washout, and then one more dose of blueberry juice.

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Detailed Description

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Conditions

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Bioavailability

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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anthocyanin-free diet

Maintain anthocyanin-free diet throughout study. Day 1 to day 30, consume daily 250 ml single strength blueberry juice containing 229 mg anthocyanins, taken either as 1 morning dose or 1/3 dose morning, 1/3 mid-day and 1/3 evening. At d 31-38 continue anthocyanin-free diet. On d 39 consume daily dose.

Group Type OTHER

Blueberry Juice

Intervention Type OTHER

Dietary intervention

Interventions

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Blueberry Juice

Dietary intervention

Intervention Type OTHER

Other Intervention Names

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Single strength wild blueberry juice, commercially prepared.

Eligibility Criteria

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Inclusion Criteria

* Provided written consent (see: Information and Consent Form)
* Fluent in English
* Complete a confidential medical questionnaire (Appendix 6)
* Able and willing to abide by the dietary restrictions as described
* Able and willing to abide by the urine collection protocols as described