Love to see data on how microbiome affects autoimmunity.

Watched this just out of curiosity, what I found most interesting is how fast the diversity of your guy biome can bounce back after a major kill off, for example antibiotics. of course after a major "kill off" of beneficial flora, there is a window of opportunity for the bad guys to take root. there seems to be a lot of conflicting data on the microbiome, if certain strains are completely gone as some would say, how do they restore themselves? and here comes the other information that does not make sense, I have seen many "professionals" state that consuming pro biotics will NOT seed or be permanently established in the gut. so what gives? if certain strains of bacteria is really completely killed off, where does it come to restore the gut if not from by ingestion? you can't have it both ways. either our gut bacteria is not completely killed off and just remains hidden and temporarily non functional >or< ingesting bacteria from food / supplements does have the potential of seeding our gut.