Ray
Negative feedback loops tend to dampen complexity and chaos.

Major problems occur when positive feedback loops start, as they rapidly get
out of hand.
Magnesium deficiency/insulin resistance (hyerinsulinaemia) sets up a
positive feedback loop for both.
Polycystic Ovary Syndrome also sets up positive feedback loops for explosive
weight gain.
Agree with you that the Neolithic diet often sets up a situation where
homeostatic mechanisms collapse (and disease ensues)

Hitchhikers Guide also foretold the Paleolithic Diet:
……a girl sitting on her own in a small café in Rickmansworth suddenly
realized what it was that had been going wrong all this time, and she
finally knew how the world could be made a good and happy place. This time
it was right, it would work….. Douglas Adams, Hitchhikers Guide to the
Galaxy.

Ben Balzer