Science behind fasting, hunger, and daily eating habits

As I looked around for information about fasting, I came across a series of well researched videos by an American living in Tokyo in a blog called What I've Learned.  Some of the videos go together with a blog entry of the complete text.  My interest in learning more about fasting is in longevity with a high quality of life, as opposed to any need to lose more than a few pounds.

The 2018 video below is a good summary of about why someone who is fasting does not feel hungry all the time.  There are several hormones involved with eating and how the body finds fuel from food or stored fat that have only been measured relatively recently as part of medical research.  An example of of Ghrelin (hunger hormone) levels during fasting begins at the 5 min. mark.  Note that 2017 book The Obesity Code by Dr. Jason Fung is referenced.

The 2016 video about eating one meal per day includes references that demonstrate that the idea of fasting as beneficial are not particularly new.  What's actually new in the history of human beings is the concept that three meals a day are necessary for a healthy lifestyle.

Intermittent Fasting & Hunger - What the Science says, 11 min - 2018

https://www.patreon.com/posts/16239257

https://youtu.be/dFT2IKmwyfg

Longevity & Why I eat once a day, 16 min - 2016

https://lifeforbusypeople.com/2016/07/23/longevity-why-i-eat-once-a-day/

https://youtu.be/PKfR6bAXr-c