This high fiber powerhouse gives you an amazing 8 grams of dietary fiber for a measly 64 calories per cup. They're also loaded with calcium, magnesium, phosphorus, potassium, vitamin C and bone-building vitamin K. And those who are watching carbs will be delighted to hear that they only contain 7 grams of "net" carbs. Even better, raspberries are a great source of a phytochemical called ellagic acid which has been shown in animal research and laboratory models to inhibit the growth of tumors