Dr. Kevin Campbell diagnosed and treated David Kerner, a 12-year kidney transplant recipient, for a blocked artery and later, diabetes. Inspired by Kerner's commitment to health after his procedures, Campbell began his own weight loss journey. The two men formed a bond, supporting each other's health journeys at the same gym. When David Kerner walked into my office last year, he wasn’t just another patient. He was someone I’d known casually, but someone I respected.