| Dietary sources of vitamin B-12 and their association with plasma vitamin B-12 concentrations in the general population: the Hordaland Homocysteine Study. | |
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MedLine Citation:
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PMID: 19190073 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Limited information is available on the association between vitamin B-12 status and intake from different dietary sources. OBJECTIVE: We investigated the relation of dietary intake of different food items with plasma vitamin B-12 concentrations in the general population. DESIGN: A cross-sectional, population-based study of 5937 subjects in 2 age groups (47-49 and 71-74 y) from the Hordaland Homocysteine Study in Norway was conducted by using a food-frequency questionnaire and measurements of plasma vitamin B-12 concentrations. RESULTS: A significant difference in plasma vitamin B-12 concentrations was observed with increasing total vitamin B-12 intake. A plateau was reached at an intake of approximately 10 microg/d. Plasma vitamin B-12 was associated with intakes of increasing amounts of vitamin B-12 from dairy products or fish (P for trend <0.001 for both) but not with intakes of vitamin B-12 from meat or eggs. For the same content of vitamin B-12, intake from dairy products led to the greatest increase in plasma vitamin B-12. Total intake of vitamin B-12, particularly from milk and fish, decreased the risk of vitamin B-12 concentrations <200 pmol/L and impaired vitamin B-12 function (vitamin B-12 <200 pmol/L and methylmalonic acid >0.27 micromol/L) in the total group and in 71-74-y-old subjects. CONCLUSIONS: Dietary intake of dairy products and fish are significant contributors to plasma vitamin B-12 and may improve plasma vitamin B-12 status. Vitamin B-12 appears to be more bioavailable from dairy products; guidelines for improving vitamin B-12 status should take this into consideration. |
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Authors:
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Anna Vogiatzoglou; A David Smith; Eha Nurk; Paula Berstad; Christian A Drevon; Per M Ueland; Stein E Vollset; Grethe S Tell; Helga Refsum |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-02-03 |
Journal Detail:
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Title: The American journal of clinical nutrition Volume: 89 ISSN: 1938-3207 ISO Abbreviation: Am. J. Clin. Nutr. Publication Date: 2009 Apr |
Date Detail:
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Created Date: 2009-03-19 Completed Date: 2009-04-06 Revised Date: 2009-05-15 |
Medline Journal Info:
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Nlm Unique ID: 0376027 Medline TA: Am J Clin Nutr Country: United States |
Other Details:
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Languages: eng Pagination: 1078-87 Citation Subset: AIM; IM |
Affiliation:
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OPTIMA, Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK. anna.vogiatzoglou@dpag.ox.ac.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aging / blood, physiology Biological Availability Cross-Sectional Studies Dairy Products Diet* Diet Surveys Female Homocysteine / blood* Humans Male Middle Aged Norway / epidemiology Nutritional Requirements Nutritional Status* Questionnaires Seafood Vitamin B 12 / administration & dosage*, blood*, pharmacokinetics Vitamin B 12 Deficiency / epidemiology, prevention & control Vitamin B Complex / administration & dosage, blood, pharmacokinetics |
| Chemical | |
Reg. No./Substance:
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12001-76-2/Vitamin B Complex; 454-28-4/Homocysteine; 68-19-9/Vitamin B 12 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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