Trillions of bacteria live in your digestive tract and play an important role in health. Of the thousands of species of gut microbes that live in your gut, however, some are healthy for your body-- while others are not.
The Diet is a source of fuel for the microbiota. Diet alteration may govern the microbiota almost 5 times more than genetics. Short Term diet changes are typically transient. Long term diet changes may significantly alter the microbiota composition. More diverse diet equals a more diverse microbiome (Gut Diversity).
I think most of us are not thinking of our gut microbiome when choosing what we want to eat, but it is those little bacteria that can make us crave certain kinds of food and keep us healthy over the long term.
This presentation by Leigh Frame, PHD was given in July of 2019 at the international conference of Nutrition in Medicine in Washington D.C.