Chokeberry is a fruit that is popular in Russia and other regions of Eastern Europe. Chokeberry is used to treat heart disease, high cholesterol, high blood pressure, and other ailments, however, there is no scientific proof to back up these claims. Antioxidants and other compounds can be found in chokeberry. These substances may aid in the protection of the heart and blood vessels, as well as the reduction of edema and blood sugar levels and the killing of cancer cells.