High-fat, high-sugar foods get most of the blame for weight gain and obesity, but doctors have found that high insulin levels are actually the culprit. When we eat foods that raise our insulin level, the body stores fat; when we lower our insulin level, the body naturally burns fat. In The Thinsulin(TM) Program, bariatric internist Tu Song-Anh Nguyen and psychiatrist Charles Nguyen share their proven, science-based, two-stage plan for weight loss. First, the active phase shows you how to gain control of and lower your insulin levels through food choices that enable dramatic weight loss. Next, the passive phase helps you to adopt a new way of thinking about food, focusing on insulin rather than calories, to keep excess weight off for good.