What is the NutriSystem program, and why is it so effective? The NutriSystem program is a complete, real life solution to losing weight. The easy-to-follow plan features low Glycemic Index, "good carb" NutriSystem Nourish foods with optimal amounts of protein to help keep you satisfied and your blood sugar levels stable. You eat often throughout the day, and always get perfect portions with every prepackaged entree, snack and dessert. In addition, because we know that nourishing your entire self extends beyond just what you eat, the program also includes two breakthrough plans-MindNourish and BodyNourish--to help get your mind and body in gear for weight loss, too. Altogether, it's a total approach to losing weight. You lose weight while learning healthy eating habits you can use for life-all in one convenient plan.