Long considered a super food, another benefit of blueberries was discovered in a University of Michigan lab. New research found a diet rich in blueberries may help diminish belly fat. Abdominal fat has been linked with both heart disease and diabetes, even in folks with a normal BMI. Although the study was performed on rats, the beneficial decrease of belly fat occurred with both of high- and low-fat diets. More research is needed on humans, but these findings back up data from earlier studies on the benefits of blueberries on male populations at risk for heart disease.
Even after they are frozen, blueberries maintain most of their nutritional benefits. The antioxidants found in the berries, which create their rich hue as well, are not affected by freezing. Frozen blueberries will lose a bit, less than 20 percent, of their vitamin E content as well as a bit of beta carotene. This means you can add blueberries to your diet all year, be they fresh or frozen. Remember though, the darker the berry the more antioxidants it will provide.