Blueberries are sweet, nutritious and wildly popular. Often labeled a superfood, they are low in calories and incredibly good for you. They’re so tasty and convenient that many people consider them their favorite fruit. The antioxidants in blueberries seem to benefit your brain by aiding brain function and delaying mental decline. Several studies demonstrate that blueberries have anti-diabetes effects, improving insulin sensitivity and lowering blood sugar levels. Like cranberries, blueberries contain substances that can prevent certain bacteria from binding to the wall of your bladder, which may help prevent UTIs. One study suggests that blueberries may aid muscle recovery after strenuous exercise, though more research is needed.