From a review of The Shangri-La Diet:
Seth Roberts, the diet founder and book author, attempts to explain the science behind how this works, but I won’t even begin to try to explain it here. I will admit that it is both counterintuitive and at times seems contradictory, but since there was little risk involved I was willing to give it a try.
I was nervous to add the calories into my diet (approximately 120 per tablespoon of olive oil), when all my life experience told me that I should be cutting fat and calories. However, I have only been following the plan for about a week and am amazed at the results. After just one day it was like having instant willpower.