High fibre diet decreases risk of colorectal cancer

Dr Stephen O’Keefe talks to ecancer at the Microbiome in Cancer and Beyond 2017 meeting about a recent study that compared and tested the diets of African Americans and native Africans with respect to risk of colorectal cancers. He found…

High fibre diet decreases risk of colorectal cancer

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Dr Stephen O’Keefe talks to ecancer at the Microbiome in Cancer and Beyond 2017 meeting about a recent study that compared and tested the diets of African Americans and native Africans with respect to risk of colorectal cancers.

He found that a Western diet (African Americans) causes an increase in high risk molecules and associated microbiota, the opposite was true for the African diet. A Western diet consists of a higher proportion of fatty and high protein foods, where as the African diet is very high in fibre.

When the diets were switched, a higher risk microbiome was observed in the African sample within two weeks, and the African American group showed suppression. This leads to a suggestion of a high fibre diet of 50g per day as opposed to the USDA 22g (female) and 35g (men) recommendations.

The influence of a Western diet on the Native Alaskan population is also cause for a concern due to their extremely high cancer risk status.

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