There's already related human evidence where FMT between elite athletes to those chronically ill show remarkable improvement in strength and endurance.<p>Important to realize that things like probiotics cannot do this alone, they are not robust enough in diversity and don't colonize.<p>Microbiome is really the "next frontier" in medical science.
I’d like to see more microbiome studies related to stress, or how to just get your gut in gear (no gas, etc). Most of the things I find, though, are fluff pieces or anecdotal “evidence” of how taking supplement X had some kind of effect that might as well have been a placebo.
I started taking L. rhamnosus, just on a whim. The only noticeable effect was that it was easier to get up off the couch, in a literal way. No idea how that works.