New York University School of Medicine
Researchers at the New York University School of Medicine are published in the "Journal of the National Cancer Institute", describing a link between decreased levels of gut microbe diversity and increased colorectal cancer rates. A possible cause of the link may be that such people's digestive tracts have lower levels of bacteria that ferment dietary fiber into the anti-inflammatory fatty acid butyrate. However, the causative link remains uncertain since there could be other influencing factors, such as genetics, obesity, or the presence of inflammatory types of microbes.
Sources: MSN