If black raspberries aren't currently part of your diet, consider adding them. Black raspberries contain a great amount of anthocyanins which are immunity-boosting antioxidants. They also contain ellagic acid which is both antiviral and antibacterial. Ellagic acid also works to detoxify the body. These berries are thought to be cancer fighters. Eat these tasty berries several times a week to reap the benefits.