by Dr. Davis | Sep 6, 2026 | Microbiome
It’s not often discussed, but the portal vein is the large blood vessel that carries venous blood from the entire gastrointestinal (GI) tract (stomach, pancreas, small and large intestine, etc.) to the liver. The liver is therefore the first organ to receive...
by Dr. Davis | Aug 27, 2026 | Diet and Lifestyle, Microbiome
It is my belief—and my experience—that so much human behavior is determined by the composition of microbes in the gastrointestinal (GI) tract. The first hint suggesting this association that I observed was the frequent comment from people who experienced fungal...
by Dr. Davis | Aug 17, 2026 | Microbiome
If you have been following my program for rebuilding your microbiome, you have come to recognize that one of our primary goals is to restore important, so-called “keystone,” microbial species, i.e., species that support other important microbial species....
by Dr. Davis | Aug 15, 2026 | Diet and Lifestyle, Microbiome
What’s the principal role of fiber in the gastrointestinal (GI) tract? Lets put aside the outdated and overly-simplistic idea that fibers, such as that in bran in, say, a high-fiber breakfast cereal, is a source of ‘”bulk,” i.e., helping create...
by Dr. Davis | Aug 1, 2026 | Microbiome
As the science detailing the health effects of the gastrointestinal (GI) microbiome continue to unfold, it is becoming clear that almost no aspect of health is not caused or substantially influenced by it. Health conditions that we thought we confidently and...
by Dr. Davis | Jul 29, 2026 | Microbiome
As we learn more about the microbiome, specifically the gastrointestinal (GI) and oral microbiomes, a potential microbial “signature” for colorectal colon cancer risk is emerging. It has been established beyond a doubt that, while there are genetic factors...