What Katz realized—what has made Nutrisystem successful in helping people lose weight for nearly five decades—is that people need personalized plans. Nutrisystem is a diet plan service with a variety of pre-packaged, ready-to-eat food, delivered at your door. The menu includes everything from burgers, pizzas and pasta to chocolate desserts and beverages. However, everything is provided following a plan of portion control and healthy eating. Nutrisystem's Personal Plans provide six small meals a day that are nutritionally balanced for your body. With hundreds of choices designed by expert chefs, variety will never be an issue. And the free weight loss app that accompanies each plan keeps you engaged with your program. Sure, there are universal principles to weight loss, such as lowering your calorie intake. This is no starvation diet. Finding a diet that both satisfies daily caloric intake and keeps you engaged in a long-term commitment is challenging. This is where Nutrisystem excels.