There is a certain category of fruit called flavonoids. Flavonoids have a number of health benefits, particularly for the cardiovascular system in the heart. They also have extremely high fiber content. Blueberries belong in this category and therefore, they are extremely good for diseases like diabetes.
Blueberries help maintain safe blood sugar levels, which is good news for diabetics, but they also have been shown to inhibit cancer. Like apples, you can use blueberries in a number of delicious ways like on top of pancakes, with your morning yogurt or in a pie.