Key takeaways: Like all fruits, blueberries provide fiber, vitamins, and minerals. Many of their health benefits come from their high antioxidant content. Eating blueberries may support your heart, brain, and digestive health. Both fresh and frozen blueberries are nutritious choices. Blueberries are easy to love. They're naturally sweet and refreshing, need little preparation, and can be used in many different ways.