Gwen Shamblin was an American author and dietitian, best known for founding the Weigh Down Workshop, a faith-based weight loss program. She gained popularity in the 1990s for her approach that combined spiritual teachings with dietary guidance, emphasizing the importance of faith in achieving personal health goals. In addition to her work in weight loss, Shamblin was the founder of the Remnant Fellowship Church in Brentwood, Tennessee. She authored several books, including "The Weigh Down Diet," which promoted her philosophy of using faith to overcome food addiction. Shamblin passed away in May 2021 in a plane crash.