What is the microbiome's function within digestion?

Digestion of the indigestible to you soluble fibers and healthy gut flora determine gastric function, constipation/diarrhea and are directly related to your immune system's strength seeing as IT is the front line.

Unhealthy gut flora = unhealthy you, including some obesity. 

Interesting fact: the chief fungi is candida and eating added sugars promotes the wrong type of candida to proliferate and some variants actually release a hormone that makes you crave MORE sugars/fructose via added sugars and white flour products. 

The more you know!