Besides being an all-weather snack, blueberries boast a nutritional arsenal consisting of antioxidants, fiber, minerals, and vitamins. After spending countless hours researching blueberries, scientists concluded that three blueberry servings a week is all a person needs to reduce cholesterol buildup. This is usually accomplished by improving digestion and strengthening metabolism. Furthermore, their potent antioxidant properties eliminate cancer-causing agents and maintain a healthy heart. The fact that these berries are available all year round makes them an ultimate superfood.