What is the 17 Day Diet? This diet has a focus on good fats, probiotics, lean proteins, and anti-oxidant rich produce. Other good habits are incorporated into this diet in order to result in healthy habits and weight loss. Sugar is banned, along with salty or fried foods, and processed foods. In the early stages of the diet, one cannot have alcohol, starchy vegetables, or high sugar fruits. This diet cycles through four stages as indicated above, "accelerate," "activate," "achieve," and "arrive." Each cycle has unique characteristics that allow the dieter to have variety to reach their weight loss goal. Once the goal is achieved, the maintenance phase allows for indulgences on the weekends, as long as five pounds is not gained. The dieter must begin again with the second cycle if more than five pounds is gained.