I'm not sure I buy any of this. It may be theoretically interesting, but all I know is myself--and I've been eating very low carb for more than a decade--and never felt better.

One example of how everyone's 'gut' isn't the same. For years I suffered from chronic constipation, but my problem was that I followed conventional wisdom and kept adding fiber. Finally, I mentioned to my gastro that fiber seemed to make things worse, and that I actually functioned better with little fiber. He said that's true of many people--including himself.

So I ignore what the 'experts' may think of my 'gut' as long as I'm thriving on my own WOE.