Berries are big on antioxidants like anthocyanidins, which help prevent DNA damage by neutralising free radicals. Having berries daily has been linked to enhanced intellectual performance.
Oxidation is a natural process that happens during normal cellular functions. Just by breathing, exercising and breaking down food our body creates free radicals. When free radicals are on the attack, they injur cells, damaging DNA and causing disease.
As the result of free radical damage, cells may function poorly, become mutated, reproduce abnormally or die. To prevent free damage the body needs a defense system in the form of antioxidants, found in many foods such as berries and can also be taken as a supplement.