The Fasting Doctor is the compelling biography of Dr. Jason Fung, the Canadian nephrologist who revolutionized the way millions of people think about weight loss, metabolism, and chronic disease. From his early medical training to his groundbreaking work on intermittent fasting and insulin resistance, this book traces Dr. Fung's journey from conventional physician to one of the most influential voices in modern nutrition science. Author Lilly Dudley explores how Dr. Fung challenged decades of mainstream dietary advice, popularized the concept of the "fat thermostat," and empowered everyday people to take control of their metabolic health through the ancient practice of fasting. Equal parts personal narrative and accessible health science, The Fasting Doctor reveals the man behind the movement and the ideas that continue to transform lives worldwide.