So if, for the sake of argument, the findings here are correct and causal and should be acted upon, what exactly is one supposed to do about it? We've got the technology to detect gut bacteria but we don't seem to have good targeted ways to affect it.
An interesting way to affect gut bacteria is to get a fecal transplant. It doesn't look fun, and I don't know how well it works, but I bet that's the direction to go.
