Heal Your Oral Microbiome by Cass Nelson-Dooley

Author:Cass Nelson-Dooley
Language: eng
Format: epub
Publisher: Ulysses Press
Published: 2019-03-12T16:00:00+00:00

Location Is Everything

You’ve heard me say it before and you’ll hear me say it again. The mouth is at the headwaters of the gastrointestinal tract, and the mouth is where the immune system first encounters the outside world. In its infinite wisdom, it tags suspicious outsiders with the help of the immune protein called sIgA (page 28) and sends communications to the gut immune system to beware of and prepare for them. The microbial communities living in the mouth flow downstream by way of saliva to the tune of 140 billion bacteria per day!99, 100, 101 The mouth is therefore “seeding” the rest of the gastrointestinal tract with microbes on a daily basis.

It is no surprise, then, that human microbiome scientists have found a whopping 45 percent overlap between the oral and colonic microbiota. Nearly 50 percent of the microbiomes in the oral cavity and the gut are the same. Bacteroidetes and Firmicutes phyla bacteria are dominant in both the oral and gut microbiomes. As I mentioned previously, one reason I have come to love the oral microbiome is that it strongly influences the composition of the gut microbiome.102

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