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Diet, Microbes and Fat: A new pathway controlling levels of body fat and cholesterol

Diet, microbes and fat: A new pathway controlling levels of body fat and cholesterol
Lipid accumulation in a murine model of fatty liver disease, visualized by color-enhanced lipid droplets (pink) in liver tissue (green). Superimposed chemical structure of a newly discovered bile acid conjugate. Credit: Dr. Mohammad Arifuzzaman, Dr. Christopher Parkhurst, Dr. Frank Schroeder, and Dr. David Artis.

Beneficial gut microbes and the body work together to fine-tune fat metabolism and cholesterol levels, according to a new preclinical study by investigators from Weill Cornell Medicine and the Boyce Thompson Institute at Cornell University’s Ithaca campus.

The research is published in the journal Nature.

The human body has co-evolved with the beneficial microbes that live in the gut (termed the microbiota), resulting in mutually favorable relationships that aid in the d...

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Researchers Find Previously Unknown Links between Microbial Bile Acids and the Risk of Colon Cancer

Microbes living in our guts help us digest food by reshaping the bile acids that our livers produce for breaking down fats. It turns out that two of these microbially-modified bile acids may affect our risk—in opposite directions—for developing colon cancer.

The link between these bile acids and colon cancer risk was recently uncovered as University of Wisconsin–Madison scientists sought to better understand the relationship between gut microbes and our bodies.

In many ways, that relationship revolves around a specific protein called the farnesoid X receptor, or FXR, which helps maintain a healthy gut through its intimate relationship with bile acids...

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