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Sponsors and Collaborators: |
Wageningen Centre for Food Sciences Wageningen University |
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Information provided by: | Wageningen University |
ClinicalTrials.gov Identifier: | NCT00130585 |
The main objectives of this project are:
The hypothesis is that the bioavailability of dietary folate within a confidence interval of +/-20% can be estimated.
Condition | Intervention |
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Folate Bioavailability Healthy |
Behavioral: Controlled diet Behavioral: folic acid supplement Behavioral: 13C11-labelled folic acid supplement |
Study Type: | Interventional |
Study Design: | Prevention, Randomized, Double-Blind, Placebo Control, Parallel Assignment, Bio-availability Study |
Official Title: | The Relative Bioavailability of Folate From a Mixed Diet Compared to Synthetic Folic Acid Using a Stable Isotope Method |
Estimated Enrollment: | 75 |
Study Start Date: | May 2005 |
Estimated Study Completion Date: | June 2005 |
Folate plays a role in the prevention of certain birth defects and possibly also in prevention of neurocognitive diseases, cancer and cardiovascular disease. The proportion of dietary folate that is absorbed and becomes available for metabolic processes in the body has been estimated between 30 and 98%, but an accurate figure is lacking. Since subjects generally differ a lot in their folate or homocysteine response upon a change in dietary folate intake, the between-person variability in these responses is high. Therefore, bioavailability estimates derived from these responses have large confidence intervals. With this trial the researchers want to determine folate bioavailability with a higher precision than previous trials. A good estimate of folate bioavailability from the general diet is necessary to construct reliable dietary reference intakes for folate.
Ages Eligible for Study: | 18 Years to 60 Years |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
Exclusion Criteria:
Netherlands | |
Wageningen University | |
Wageningen, Netherlands, 6700EV |
Principal Investigator: | Petra Verhoef, Dr. | Wageningen Centre for Food Sciences |
Principal Investigator: | Martijn Katan, Professor | Wageningen University |
Study ID Numbers: | A-007-RW |
Study First Received: | August 12, 2005 |
Last Updated: | October 3, 2005 |
ClinicalTrials.gov Identifier: | NCT00130585 |
Health Authority: | Netherlands: The Central Committee on Research Involving Human Subjects (CCMO) |
Folate Bioavailability Stable isotopes |
Folic Acid Healthy |
Vitamin B Complex Hematinics Therapeutic Uses Growth Substances Vitamins |
Hematologic Agents Physiological Effects of Drugs Micronutrients Pharmacologic Actions |