Medifast first open its doors in 1980 and since then has become one of the premier choices of meal replacements for people who wish to lose weight. Over 20,000 doctors have recommended their service. Medifast meals and plans follow clinically proven nutrition guidelines and have been designed by physicians. Medifast plans can be used by all types of people in different stages of life and there are currently over 70 different foods and flavors choices to choose from. The Medifast meals are designed to be filling so hunger should never take control. Meals are also fortified with nutrients and vitamins so that you will lose weight quickly and safely, about 2 to 5 pounds per week.

Founded in 1983, Jenny Craig is one of the most popular weight management programs in the world. This system focus on food, body and mind. It combines meal plans, education about eventually developing your own meal plans, a program for simple physical activity to keep you energized, and the motivation of a personal consultant to guide you through the entire process. This program doesn’t just help you lose weight; it helps you develop a healthy lifestyle. Whether you’d like to lose a small amount of weight or would like to make significant changes, whether you’re male or female, younger or older—Jenny Craig has a program for you. There are more than 650 centers across the U.S., Canada, and Puerto Rico, giving you the option to do your program in-person at the centers. If there isn’t a Center near you, you can choose an at-home option for all of the same great benefits.

Diet-to-Go is a popular dieting meal program that is freshly prepared, delicious, and nutritionally balanced. Meals are delivered directly to your home—or, you can pick the meals up if you live in one of the more than 200 Diet-to-Go pick-up areas. These meals are rated highly because they’re prepared by chefs and are never freeze dried. The meals also come with extra fruit, sides & condiments—which puts this weight loss system ahead of the curve compared to other systems.

Weight Watchers was founded by Jean Nidetch in the early 1960's. In the beginning it was just a group of friends getting together every week to discuss how to lose weight. Since then it has grown considerably and now over 3.4 million people (as of 2018) are currently subscribed and actively using the weight loss system from all over the world.

Weight Watchers helps people lose weight by providing information, tools and motivation. This popular program is not just about losing weight though, it is also about keeping the weight off. This requires positive behavioral changes in your life which Weight Watcher meetings and their online content and tools provide. Weight Watchers OnlinePlus is ideal for people who cannot attend meetings. Here you will learn how to lose weight with the WW Freestyle Program, and you'll be able to use their state-of-the-art online and mobile tools that help you achieve your goals.

The weight loss system at Weight Watchers is called Freestyle and is developed by a scientific advisory board. This board is made up of a number of credentialed scientists with research experience and knowledge in weight management. The Freestyle program uses SmartPoints and FitPoints. It is designed for a safe rate of weight loss which is up to two pounds per week after the first three weeks. Weight Watchers takes a holistic lifestyle approach to losing weight championing a healthy diet and exercise routines for long-term health.