Half a cup of cranberries contains only 25 calories. The nutrients in cranberries have been linked to a lower risk of urinary tract infections, prevention of certain types of cancer, improved immune function, and decreased blood pressure. In terms of antioxidants, cranberries outrank nearly every fruit and vegetable, including strawberries, spinach, broccoli, red grapes, apples, raspberries, and cherries. Antioxidants and phytonutrients in cranberries, such as oligomeric proanthocyanidins, anthocyanidin flavonoids (which give them their bright red color), cyanidin, peonidin and quercetin, have unique health benefits.
Don't touch cranberry juice, it lacks nutrients and is full of added sugars.