The convenience of frozen blueberries allows you to enjoy the antioxidant-rich fruit any time of year. Frozen berries are less likely to spoil and are often less expensive than fresh. Use frozen blueberries in cereal, oatmeal, muffins, pies or pancakes. Frozen blueberries make a healthy addition to any diet, especially if you choose unsweetened versions.
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A cup of unsweetened frozen blueberries, weighing 155 g, contains just 79 calories per cup and 1 g of fat. Eating unsweetened frozen blueberries instead of higher-calorie foods, such as chips or candy, can help prevent weight gain and even help you lose weight. If you are seeking to reduce your calorie intake, decrease your serving size of cereal in the morning and fill the rest of your bowl with unsweetened frozen blueberries, or top whole wheat pancakes or plain yogurt with thawed frozen blueberries instead of syrup or honey.
One cup of unsweetened frozen blueberries, weighing 155 g, provides more than 30 percent of the recommended dietary allowance for vitamin K, essential to blood clotting. This serving also offers 6 percent of the RDA for vitamin C, 5 percent for vitamin B6 and 11 percent for the trace mineral manganese. A 155-g serving of unsweetened frozen blueberries also provides 2 percent of the RDA for iron, magnesium, potassium and phosphorus. Unsweetened frozen blueberries are also a source of fiber. The 4 g in 155 g of unsweetened frozen blueberries can help keep your digestive system regular and protect colon health. Frozen blueberries also provide a high concentration of disease-fighting antioxidants per serving,
While sweetened frozen blueberries still offer the fiber, vitamins and minerals of fresh, they contain 45 more calories per serving than unsweetened frozen blueberries. Sweetened frozen blueberries contain up to 11 g of added sugar per 155 g – almost 4 tsp. The American Heart Association advises keeping daily added sugar intake to less than 6 tsp. per day for women and 9 tsp. per day for men.
Blueberries are listed as one of the “Dirty Dozen” by the Environmental Working Group, or EWG. These 12 fruits and vegetables tend to show the highest pesticide residues. The EWG recommends that you purchase organic versions to reduce your pesticide consumption by 80 percent. Frozen blueberries have less than half of the insecticides present on fresh berries, reports Dr. Walter Crinnion in an issue of "The Huffington Post" from June 3, 2010. If pesticides are still a concern for you, consider purchasing organic frozen blueberries.