Aronia berries, which grow on the aronia shrub, are believed to contain high levels of antioxidants that help fight against heart disease and other cardiovascular ailments. Aronia berries may help lower blood pressure, promote a healthy urinary tract, provide anti-inflammation to affected areas and fight bacteria and viruses. Aronia berries may also aid in digestion, strengthen memory and help the body produce good cholesterol. These berries may be eaten fresh. No side effects are yet known.