There is a fairly comprehensive summary of recent research on [1] (not sure who curated it). Since then there has also been a significant metabolic study [2].
The Google drive link seems not to be working for me, but I'll try another computer. That pnas link looks extremely interesting, and I'll give it a thorough read. Thanks very much for the information.
Weird, works for me on a fresh browser. If you can't access it I can upload elsewhere as it's definitely worth a read :)
I switched over to another browser and it's working fine, thanks for the links. I agree that it was definitely worth the read.
The Naviaux study hasn't been replicated yet, and in fact another recent study found completely different metabolic abnormalities. So it might just be random differences.