Anthony Colpo points out it’s not just our digestive systems that may be a mismatch for our modern environment:
Just as humans have not yet had sufficient time to fully and physically adapt to the dietary changes wrought by the Agricultural and Industrial revolutions, humans have not yet had time to fully cognitively adapt to the massive environmental and psychosocial changes wrought by these same revolutions.
Psychologically, we are “Stone Agers living in the fast lane”. We like to think of ourselves as more civilized and enlightened than our Paleolithic forebears, but so much of our daily behaviour is still beyond our control and even our comprehension. We frequently and automatically respond to situations and stimuli using largely subconscious responses that were cognitively hard-wired into us hundreds of thousands and even millions of years ago.
Head on over to Anthony’s if you want to read more on the political implications of this. In the meantime, I think this is part of the struggle that many experience with very restrictive diets. Your favorite guru may be saying ‘no’ to moderation, but your lizard brain is saying ‘nom, nom, nom’ ;).