| Effect of vegetarian diets on bone mineral density: a Bayesian meta-analysis. | |
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MedLine Citation:
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PMID: 19571226 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: The association between vegetarian diets and bone mineral density (BMD) is controversial because of conflicting findings from previous studies. OBJECTIVE: The aim of this study was to estimate the effect of vegetarian diets on BMD by using a meta-analytic approach. DESIGN: A systematic electronic literature search was conducted to identify all relevant articles on the association between vegetarian diet and BMD. Nine studies of 2749 subjects (1880 women and 869 men) were included in the analysis. Traditional and Bayesian methods of meta-analysis were applied to synthesize the data. RESULTS: Overall, BMD was approximately 4% lower in vegetarians than in omnivores (95% CI: 2%, 7%) at both the femoral neck and the lumbar spine. Compared with omnivores, vegans had a significantly lower lumbar spine BMD (6% lower; 95% CI: 2%, 9%), which was more pronounced than in lactoovovegetarians (2% lower; 95% CI: 1%, 4%). The probability that BMD was > or =5% lower in vegetarians than in omnivores (or approximately 0.3 SD) was 42% for the femoral neck and 32% for the lumbar spine. There was no evidence of publication bias. There was a moderate degree of between-study heterogeneity; the coefficient of heterogeneity varied between 46% and 51%. CONCLUSION: The results suggest that vegetarian diets, particularly vegan diets, are associated with lower BMD, but the magnitude of the association is clinically insignificant. |
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Authors:
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Lan T Ho-Pham; Nguyen D Nguyen; Tuan V Nguyen |
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Publication Detail:
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Type: Comparative Study; Journal Article; Meta-Analysis; Research Support, Non-U.S. Gov't Date: 2009-07-01 |
Journal Detail:
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Title: The American journal of clinical nutrition Volume: 90 ISSN: 1938-3207 ISO Abbreviation: Am. J. Clin. Nutr. Publication Date: 2009 Oct |
Date Detail:
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Created Date: 2009-09-21 Completed Date: 2009-10-09 Revised Date: - |
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: 943-50 Citation Subset: AIM; IM |
Affiliation:
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Department of Internal Medicine, Pham Ngoc Thach University of Medicine, Ho Chi Minh City, Vietnam. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Bayes Theorem Bone Density* Diet / adverse effects* Diet, Vegetarian / adverse effects* Female Femur Neck / physiopathology Fractures, Bone / etiology Humans Lumbar Vertebrae / physiopathology Male Middle Aged Young Adult |
| Comments/Corrections | |
Comment In:
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Am J Clin Nutr. 2009 Oct;90(4):910-1
[PMID:
19726592
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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