In this talk, Eric Westman presents on his decades of clinical experience treating obesity and diabetes with low-carbohydrate diets, arguing that nutrition education often overlooks a basic biological reality: the human body is primarily composed of water, protein, and fat, while carbohydrates function mainly as an optional fuel source rather than a structural necessity. Using simple metaphors and classroom demonstrations, he reframes weight management around fuel selection rather than calorie counting, explaining that excess carbohydrate is readily converted to body fat while restricting carbohydrates allows the body to mobilize stored fat for energy. Westman emphasizes practical, patient-friendly teaching—prioritizing protein, using fat as a primary fuel, and treating carbohydrates as conditional energy—while also critiquing how modern dietary guidelines and cultural norms have drifted away from earlier low-carbohydrate traditions. With clear, biologically grounded nutrition education, patients better understand metabolism and adopt sustainable strategies for fat loss and metabolic health.