At the start of each summer, ads for pre-packaged diet programs start popping up on TV and on the Web, with promises of fast results with no grocery shopping or meal planning - and often with little ...

The Optavia diet provides packaged foods that you can cook or eat prepared. They offer low calorie and reduced-carb meals, as well as help you lose weight with personalized coaching. The exact food ...

The Medifast diet — which Optavia, an offshoot program, has replaced — is a weight-loss plan that promises to help you shed pounds easily with its branded snacks and meals. But the reality may look a ...