Oncology Medical News about prostate cancer risk; men; soy consumption

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Soy consumption and prostate cancer risk in men: A revisit of a meta-analysis
American Journal of Clinical Nutrition, 02/16/09

Yan L et al. – Study concludes that consumption of soy foods is associated with a reduction in prostate cancer risk in men; may be associated with the type and quantity of soy foods consumed.

Methods

A meta-analysis on the association between soy consumption and PCa risk in men
Medline literature search identified 15 epidemiologic publications on soy consumption and 9 on isoflavones
Highest and the lowest reported categories of intake from each study was selected and represented as most adjusted relative risks (RRs) and odds ratios (ORs)

Results

Study yielded a combined RR/OR of 0.74
Studies on nonfermented soy foods yielded a combined RR/OR of 0.70; fermented soy foods yielded a combined RR/OR of 1.02
Studies on isoflavones yielded a combined RR/OR of 0.88
A separate analyses showed a combined RR/OR of 0.52 from studies with Asian populations and 0.99 from studies with Western populations

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