Results have always to be placed in the context of the individual's medical and dietary background. The gut microbiome is powerfully affected by dietary factors. Understanding these factors could make all the difference between an optimally functional gut microbiome or a dysfunctional one. This is why we need to know what your dietary intake is through dietary analysis.
We have reached an age of technological wonders like the 16S rRNA (ribosomal RNA) molecule whose genetic sequence can identify organisms in your bowel that have never been grown in a laboratory. New species have been discovered using this short gene sequence that have never been cultured.