The Optavia diet aims for rapid weight loss centered around pre-packaged foods like soups, brownies, and shakes that the company calls "fuelings." The most popular Optavia plan, called the "5&1 ...

To learn more about Optavia's plans and offerings, I tested the products and spoke with a nutritionist. Here's what I found. Optavia is a diet company that sells bars, shakes, snacks and easy-to ...