One of the top superfoods is blueberries! These little blue gems are not only tasty but loaded with nutrients. They are sweet and taste great fresh or frozen. Just one cup of blueberries provides 24 percent of your daily vitamin C requirements. Blueberries contain a flavonoid called anthocyanin that is a powerful antioxidant. It also gives the berries their signature blue color. Iron, calcium, magnesium, vitamin K and other nutrients in blueberries can promote good bone health. Blueberries can improve your skin because their vitamin C can help boost collagen production and prevent skin damage. Eating foods high in calcium, magnesium, and potassium like blueberries helps lower blood pressure and manage type 1 and type 2 diabetes. Blueberries are great to eat on their own, with yogurt, smoothies, and baked goods and on top of pancakes.