Belly Fat Free: Lose Belly Fat with the Blood Type Diet and Other Dieting Recipes The Belly Fat Free Diet book features two diet plans that help to lose belly fat, the Blood Type Diet and the "low diets" plan - featuring low fat, low carbohydrate, muscle building, vegetarian, and Paleolithic diets. If the goal is to lose belly fat, then eating certain foods that help to increase metabolism will work towards this goal. Couple these diets with a good exercise routine and watch the fat and weight melt off with persistence and patience. Combine the recipes within the diet plans to give you a good variety and a couple of weeks worth of menu planning.