Bioavailability of Folic Acid Fortified Bread

NCT ID: NCT01570088

Last Updated: 2014-12-16

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

PHASE2

Total Enrollment

45 participants

Study Classification

INTERVENTIONAL

Study Start Date

2012-04-30

Study Completion Date

2012-12-31

Brief Summary

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Folic acid is the synthetic form of vitamin folate. Because of its high stability and bioavailability, it is the form of folate added to bread in Canada to reduce birth defects. There are health concerns about long-term folic acid consumption. Another form of folate, L-5-methyltetrahydrofolic acid (L-5-MTHF) has become available which does not have these health concerns. Unfortunately L-5-MTHF is not as stable as folic acid, but the investigators have developed a method to stabilize L-5-MTHF in food. The investigators plan to conduct a randomized trial to compare the bioavailability of bread fortified with L-5-MTHF versus folic acid.

The investigators hypothesize that bread fortified with L-5-MTHF will increase red cell folate over 16 weeks to the same extent as bread fortified with equimolar folic acid.

Detailed Description

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See above.

Conditions

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Red Blood Cell Folate

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Folic acid

Group Type ACTIVE_COMPARATOR

Folic acid

Intervention Type DIETARY_SUPPLEMENT

One roll/bun per day fortified with 400 µg of folic acid

L-5-MTHF

Group Type EXPERIMENTAL

L-5-MTHF

Intervention Type DIETARY_SUPPLEMENT

One roll/bun per day fortified with 452 µg of L-5-MTHF

Placebo

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type OTHER

Placebo contains no folic acids

Interventions

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Folic acid

One roll/bun per day fortified with 400 µg of folic acid

Intervention Type DIETARY_SUPPLEMENT

L-5-MTHF

One roll/bun per day fortified with 452 µg of L-5-MTHF

Intervention Type DIETARY_SUPPLEMENT

Placebo

Placebo contains no folic acids

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* 18-45 years
* Not taking a folic acid containing supplement

Exclusion Criteria

* Adults who have medical conditions such as diabetes, asthma, cancer, cardiovascular disease, high blood pressure, celiac disease, or psychiatric illness
* Adults who are taking medications known to interfere with folate metabolism (i.e. phenytoin, sulphasalazine, methotrexate)
* Adults with wheat, milk allergy or lactose intolerance
* Adults with known B12 deficiency
* Adults who consume more than 1 alcoholic drink/day on average (1 drink=12 oz beer, 5 oz wine or 1.5 oz spirits)
* Women have been pregnant during the year previous
* Women planning a pregnancy in the next year
* Women who believe they may become pregnant during the study
* Women who have had a known previous neural tube defect affected pregnancy
* Adults who are unable to provide informed consent
Minimum Eligible Age

18 Years

Maximum Eligible Age

45 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of British Columbia

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Tim Green, PhD

Role: PRINCIPAL_INVESTIGATOR

University of British Columbia

Locations

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University of British Columbia

Vancouver, British Columbia, Canada

Site Status

Countries

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Canada

References

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Green TJ, Liu Y, Dadgar S, Li W, Bohni R, Kitts DD. Wheat rolls fortified with microencapsulated L-5-methyltetrahydrofolic acid or equimolar folic acid increase blood folate concentrations to a similar extent in healthy men and women. J Nutr. 2013 Jun;143(6):867-71. doi: 10.3945/jn.113.174268. Epub 2013 Apr 24.

Reference Type DERIVED
PMID: 23616513 (View on PubMed)

Other Identifiers

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H12-00339

Identifier Type: -

Identifier Source: org_study_id