Mark P Mattson did some of the original research on Intermittent Fasting. He has written a book on it: https://www.amazon.com/Intermittent-Fasting-Revolution-Optimizing-Performance/dp/0262046407

There are some good youtube videos from him on the topic.

Mark P Mattson talk at Google about the book:

https://www.youtube.com/watch?v=OdB_-iUUtZs

below is a shorter video:

Why fasting bolsters brain power: Mark Mattson at TEDxJohnsHopkinsUniversity : https://www.youtube.com/watch?v=4UkZAwKoCP8