| Dietary intake of vitamin B6 and concentration of vitamin B6 in blood samples of German vegans. | |
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MedLine Citation:
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PMID: 16925884 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The study aimed to evaluate the dietary vitamin B6 intake and determine the vitamin B6 concentration in blood samples of German vegans. DESIGN AND SETTING: Cross-sectional study with 33 examination sites all over Germany. Subjects Ninety-three vegans (50 females) with a mean (+/- standard deviation (SD)) age of 43.7 +/- 15.7 years who took no vitamin supplements. METHODS: Dietary intake was assed using a semi-quantitative food-frequency questionnaire. Erythrocyte aspartate aminotransferase activity coefficient (EAST-AC) was calculated as the ratio of stimulated (pyridoxal 5'-phosphate added) to unstimulated activity in blood samples that were provided after an overnight fast. RESULTS: Mean +/- SD vitamin B6 intake was 2.83 +/- 0.98 mg day(-1) and mean +/- SD protein intake was 56.6 +/- 21.7 g day(-1). Of the participants 4% showed vitamin B6 intakes lower than daily recommended intakes for Germany, 16% showed EAST-AC > 1.85, and a further 58% showed EAST-AC of 1.5-1-85. Moderate vegans were affected to a lesser extent than strict vegans. None of the established confounders was a significant predictor of EAST-AC. In logistic regression analyses the contribution of nutriments and cereals to pyridoxine intake was the only predictor of EAST-AC classified as < or = 1.85 and > 1.85, respectively. CONCLUSIONS: In spite of the high total intake of vitamin B6, an adequate concentration in blood samples could not be realised for a majority of the participants. Due to the health implications of a marginal pyridoxine status, vegans should be encouraged to include foods with a high bioavailability of pyridoxine, such as beans, lentils and bananas, in the daily diet. |
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Authors:
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A Waldmann; B Dörr; J W Koschizke; C Leitzmann; A Hahn |
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Publication Detail:
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Type: Journal Article; Multicenter Study |
Journal Detail:
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Title: Public health nutrition Volume: 9 ISSN: 1368-9800 ISO Abbreviation: Public Health Nutr Publication Date: 2006 Sep |
Date Detail:
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Created Date: 2006-08-23 Completed Date: 2007-01-09 Revised Date: 2009-11-03 |
Medline Journal Info:
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Nlm Unique ID: 9808463 Medline TA: Public Health Nutr Country: England |
Other Details:
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Languages: eng Pagination: 779-84 Citation Subset: IM |
Affiliation:
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Institute of Food Science, University of Hannover, Wunstorfer Strasse 14, D-30453 Hannover, Germany. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aspartate Aminotransferases / metabolism Biological Availability Cross-Sectional Studies Diet, Vegetarian* Erythrocytes / enzymology Female Germany Humans Logistic Models Male Nutrition Assessment* Nutritional Status* Questionnaires Vitamin B 6 / administration & dosage*, blood* Vitamin B 6 Deficiency / blood, epidemiology, prevention & control Vitamin B Complex / administration & dosage*, blood |
| Chemical | |
Reg. No./Substance:
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12001-76-2/Vitamin B Complex; 8059-24-3/Vitamin B 6; EC 2.6.1.1/Aspartate Aminotransferases |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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