Dr Jason Fung

https://www.doctorjasonfung.com/

"Dr. Jason Fung, MD turned his passion for disease prevention into a groundbreaking, clinically proven, and natural treatment for type 2 diabetes and obesity: intermittent fasting, combined with a low carb, healthy high fat diet."

https://en.wikipedia.org/wiki/Jason_Fung

"Jason Fung (born in 1973) is a Canadian nephrologist and functional medicine advocate who promotes a low-carbohydrate high-fat diet; and intermittent and extended fasting. Fung disputes the current saturated fat guidelines."