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