The decline of microbial diversity The richness of our gut microbiome depends on the quality of our diet. A diet poor in “food” for these microorganisms, typically fibers or other fermentable carbohydrates, automatically leads to a decrease in microbial diversity. By taking advantage of the decline of certain populations of microorganisms, others will take over and proliferate more. When this situation becomes chronic, we speak of dysbiosis, or disruption of the microbial ecosystem. On the other hand, if our microbial
