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Colon cancer probability increases with decreased vitamin D – Meta-analysis July 2011

Meta-analysis: Serum vitamin D and colorectal adenoma risk.

Prev Med. 2011 Jul-Aug;53(1-2):10-6. Epub 2011 Jun 13.
Yin L, Grandi N, Raum E, Haug U, Arndt V, Brenner H.
Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Bergheimer Strasse 20, Heidelberg, Germany

OBJECTIVE:

To perform a systematic review and meta-analysis of human studies on the association between serum 25 hydroxyvitamin D (25(OH)D) and incident, sporadic colorectal adenoma (CRA) and CRA recurrence.
METHODS:

Relevant studies among humans were identified by systematically searching Ovid Medline, EMBASE, and ISI Web of Knowledge databases and by cross-referencing. Due to the heterogeneity across studies in categorizing serum vitamin D levels, all results were recalculated for an increase of serum 25(OH)D by 20 ng/ml. Summary odds ratios (ORs) were calculated using meta-analysis methods.
RESULTS:

Overall, 10 original studies were included. Specific results for incident CRA according to serum 25(OH)D were reported in 8 studies, and for CRA recurrence in 2 studies, respectively. In meta-analyses, summary ORs (95% confidence intervals) regarding incident and recurrent CRA, and both outcomes combined were 0.82 (0.69-0.97), 0.87 (0.56-1.35), and 0.84 (0.72-0.97), respectively, for an increase of 25(OH)D by 20 ng/ml. No publication bias was found.
CONCLUSION:

Our results support suggestions that serum 25(OH)D levels are inversely associated with CRA risk.

Crown Copyright © 2011. Published by Elsevier Inc. All rights reserved.

PMID: 21672549
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See also VitaminDWiki

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