The Nutrisystem weight loss program and all of the diet food choices are based on the science of the Glycemic Index, which measures the quality of carbohydrates and how they impact your blood sugar levels. Carbohydrates that break down slowly encourage stable blood sugar levels so they rate well or “low” on the Glycemic Index. The slow and steady breakdown also produces a greater feeling of fullness. Carbs that break down too quickly cause your insulin levels to spike, and high insulin levels can cause your body to store fat. These “bad carbs” are given higher-glycemic values and most often leave you hungry soon after a meal. So if you’re looking to lose weight, you should stay away from “bad carbs” and instead, seek to incorporate more “good carbs” with low-glycemic values into your diet to help keep your blood sugar levels stable and your appetite in check. With the recommended combination of fresh grocery items and the Nutrisystem® entrees and snacks, we do the work for you.