It mentions caloric restriction but nothing about fasting. And fasting is a form of caloric restriction but it’s not really the same - see this video: https://m.youtube.com/watch?v=2iCVKRxsgE0&pp=ygUldGhvbWFzIGR...
The 36 hour fasts I do are so much easier than trying to eat small portions consistently it’s absurd.
I lost all my extra weight and didn’t even eat as healthy as I was prior to fasting. Serious fasting is like hard exercise for your metabolism. When you exercise, would you rather go hard and push yourself or would you rather go through the motions and not work up a sweat? I think of real fasting (24 hr plus) as intense workout for your metabolism.
And it’s much easier than I thought if you know the tricks… mainly take prebiotic fiber to stop insane hunger. Drink lots of tea. And take pink/mineral salt if you get a fasting headache. If you want to know more of the science why it works watch the YouTube vid I linked. That guy has like 5000 videos about fasting, it’s so much he should probably do a fast of making YouTube vids about fasting.