Yes, it does. The secret of nutrisystem is portioning. All they do is make sure what you are eating is small enough to provide you with just the right amount of calories you need to lose weight. If you are disciplined you can do the same thing with normal store bought food.
It works if you stick with it, but it is actually just a low calorie (1000 per day) diet and the food is disgusting. I was on it and lost about 2 pounds a week, but I like to eat and the food was just nasty.
