Dr. Jason Fung earned his medical degree at the University of Toronto, where he also completed his internal medicine residency before heading to the University of California, Los Angeles, for his fellowship in nephrology. He currently practices as a kidney specialist in Toronto.

During the course of treating thousands of patients, it became clear to Dr. Fung that the epidemic of type 2 diabetes and obesity was getting worse. The prevailing dietary recommendations to reduce dietary fat and calories were clearly ineffective. He founded the Intensive Dietary Management Program to provide a unique treatment focus for type 2 diabetes and obesity: rather than focusing on medications, this clinic focuses on dietary changes that are simple yet effective.