Well, there are changes in the intestinal &#x2F; colonic microbiota changes associated with CRC, and some putatove mechanisms of causation. See:<p><a href="http:&#x2F;&#x2F;www.sciencedirect.com&#x2F;science&#x2F;article&#x2F;pii&#x2F;S1931312813002552" rel="nofollow">http:&#x2F;&#x2F;www.sciencedirect.com&#x2F;science&#x2F;article&#x2F;pii&#x2F;S1931312813...</a>