Well, IMO that's debatable. Maybe since you're able to get good stuff like raw goat's milk, etc., you can be more easily assured that the bacteria that gets into your scrubbed insides is good. My whole thing is we don't really know where the pathogenic bacteria comes from in the first place, so it's hard to be assured just from ingesting food from today's typical supply chain exactly what recolonizes your clean gut. I mean, even if we're eating clean and organic there's still toxic stuff sprayed on organic food, and things get washed with gawd knows what and then rinsed how thoroughly? between picking and arriving at the market, etc. I tend to think a lot of pathogenic bacteria comes from food with preservatives that allow it to harbor bacteria without actually spoiling to the point where it's inedible. But that may not be the only place it comes from. And commercially available high-quality food, even fermented food, isn't a guaranteed source of viable benefical bacteria. Commercial food products often don't have many viable organisms. Within the caveat that some probiotics are also junk, IMO taking some reputable brands is probably good insurance. Other's mileage may vary on that. And I may be wrong. Just hafta see. I don't think so, not specifically, because I remember learning about this a long time ago, although I never paid much mind to the implications of it. Like endotoxin...never really internalized it until quite recently. Edit: crikey, somehow this got posted before I was done. Apologies. Finish it off with another post later.