Sunday, April 15, 2012
Soy Isoflavones-Role of intestinal bacteria as the "second human genome"
Posted by Chantel M. Contributed by US National Library of Medicine National Institutes of Health
In the study of "Prostate Cancer Chemoprevention by Soy Isoflavones-Role of intestinal bacteria as the "second human genome" by Akaza H., posted in US National Library of Medicine National Institutes of Health, researchers found that the composition of intestinal microbiota can indicate the risk of disease to each individual. The concepts of biodynamics as employed by the Benziger Winery in California, which treats every part of an agricultural environment as a living, breathing entity, can be usefully employed in the construction of a system for cancer prevention, which seeks to utilize the relationship of coexistence (symbiosis) shared between people and intestinal symbiosis, that is microbiota. Changes in the incidence rate of cancer among Japanese emigrants to Hawaii demonstrate the impact of the changes in the living environment. This leads to the hypothesis that an intake of soy-derived food products and the metabolization of the isoflavones they contain by intestinal microbiota is one of the factors for the significant difference in the incidence rate of prostate cancer among Asian and European/North American populations. It is further hypothesized that isoflavones, particularly equol, are a key factor in the difference in incidence rate between Asia and the West. It is suggested that not having equol converting bacteria in the intestine (non equol producers) can be a risk factor for prostate cancer and that one direction for future research will be to examine the possibility of improving the intestinal environment to enable equol production.
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