Cherries are rich in beta carotene, vitamin C, anthocyanins and quercetin, all of which may work together synergistically to fight cancer. Sweet cherries are loaded with potassium, a natural blood-pressure reducer. One cup of cherries contains roughly the same amount of potassium as a small banana as well as has some quercetin, an antioxidant that may help keep blood vessels relaxed and supple, making it a great substitute when you are not in the mood for the regular banana.