Obesity remains a pervasive preventable disease. Numerous weight loss options are available, however, few programs report even modest sustained weight loss. Here, we describe results from the Bright Line Eating program (BLE). BLE is a recently developed web-based weight loss program. The core principles of BLE consist of following clear, unambiguous boundaries referred to as bright lines. The four Bright Lines are: Sugar, Flour, Meals, and Quantities. Specifically, (1) no sugar consumption (2) no flour consumption, (3) eating 3 meals per day with no snacking, (4) weighing and measuring meals. BLE also contains a unique and comprehensive support mechanism based on 12-step programs.