Nutrisystem is a weight loss program that provides pre-packaged meals and snacks designed to help individuals manage their calorie intake. The program offers a variety of meal plans tailored to different dietary needs, including options for vegetarians and those with specific health conditions. Participants receive a combination of ready-to-eat meals and guidance on portion control, encouraging healthier eating habits. Nutrisystem also includes online support and tools to track progress, making it easier for users to stay motivated and achieve their weight loss goals.