Anthocyanins neutralize the enzymes that cause the destruction of connective tissues. They also prevent oxidants from damaging those same tissues as well. Lastly, they work to repair proteins in the blood vessel walls that have been damaged.

Foods containing anthocyanins have been used in herbal folk medicines at least since the 12th century. They have anti-inflammatory properties that directly impact the nervous system, as well as collagen production. They also protect against microvessel damage from high blood sugar levels that can cause diabetic complications.

Overall, it is actually blackberries that have the largest concentration of antioxidants of any fruit. Other berry varieties that have great antioxidant concentrations for fighting against free radicals include jewel raspberries, Elliot blueberries, and early black cranberries.