Ok, I'm not good at following this advice right now, but it's where I'm trying to head back to:
Fiber-Famished Gut Microbes Linked to Poor Health
Apparently not all the fiber loving microbes in your gut die off when starved. Some of them turn to parasitic activity, eating your gut mucus, which you rather need.
The mostly meat and dairy diet did great things for my systemic inflammation, but not so great things to my gut and immune system. We're bringing back more veg slowly.