What are some intriguing videos to watch about the physiology of fasting and related things?

Someone commented the other day for me to watch videos of Dr pradip jamnadas. I’ve watched all of his videos since then. He’s so so smart and has such great things to say. I want to learn more about this type of stuff from really great doctors and experts. Does anyone have any recommendations of bright minded individuals to watch on YouTube about fasting, anti aging (when it comes to pathologies), etc.?