According to Tufts University, the average person needs approximately 3,000 to 5,000 ORAC units per day to have a significant impact on plasma and tissue antioxidant capacity. Three servings of fruits and vegetables per day provide approximately 1200 ORAC units. This means the average person is short by up to 3800 ORAC units each day, depending on the fruits and vegetables they are choosing and their body's requirements. To make up the difference, experts recommend supplementing our diet with high ORAC foods such as Goji Berries to become and stay healthy and slow down the aging process caused by free radical damage.