Explain the Glycemic Index (GI) and how it impacts the digestion of carbohydrates within the human body. Your answer should include information regarding the different types of sugar, the breakdown of carbohydrate for energy, and the role of fiber.
3.Provide a brief description of the three macronutrients: carbohydrate, protein, and fat. Explain the role of each macronutrient and provide the recommended dietary allowances for each.