Valter Longo is an Italian-American biologist and gerontologist who is a professor of gerontology and biological science at the University of Southern California. He is the director of the USC Longevity Institute and the Program on Longevity and Cancer at IFOM (FIRC Institute of Molecular Oncology) in Milan, Italy.

Longo is known for his research on the biological mechanisms of aging, and for his work on fasting-mimicking diets, which he claims can promote health and longevity. He has written several books on the subject, including "The Longevity Diet" and "The Fasting Diet".

Longo advocates for periodic fasting as a way to promote overall health and prevent disease. He believes that intermittent fasting, which involves limiting food intake to certain times of day or certain days of the week, can help reduce inflammation, improve metabolic health, and promote cellular repair and regeneration.

In today's episode, we focus on intermittent fasting.