Yes, absolutely possible. There is so much potential in gut bacteria research and we are only starting to recently scratch the surface with it. I get really excited about the topic of gut bacteria for some reason, it is just very interesting.

Its hard to separate cause and effect right now though. There also may be a snowball effect. We just know so little so there is a lot of research that needs to be done.

Antibiotics are unlikely. Fecal transparents are much more likely. Fecal transparents are starting to be used for c. Diff infections with success.