Most people's leptin levels are out of control, causing them to overeat and to store fat rather than burn it. The only way to flip the "hunger switch" back to normal is through a diet high in healthy fats and low in carbohydrates, saturated fat, and trans-fatty acids often found in processed food-plus just 15 minutes of daily exercise. Dr. Rosedale's 21-day diet plan is simple: Just select from the many foods on his "A" list, including "healthy-fat"...