"The Longevity Diet: Discover the New Science," by Valter Longo, published by Penguin Random House: New York, 2018. The clinically proven answer is yes, and The Longevity Diet is easier to follow than you'd think.
Haven't finished it yet, but from what I've read, I like the amount of time this type of diet has been studied and used which helps to validate results for the whole.