Some experts believe that it is the antioxidant content of Rockster food that has helped to support The Rockster living such a long and healthy life. Toxins, chemicals, pollutants, nutritional deficiencies and stress are all known contributors to the formation of cellular free radicals in the body; antioxidants neutralise those free radicals. When the balance of pro-oxidant, free radicals and antioxidants in the body is off, problems begin to start. Rockster foods contain vastly more antioxidant rich content than you would expect to find in a pet food, averaging at over 2000 units. This is due to our unique recipes containing organic fruits and vegetables such as; Lingonberries, Cranberries, Seabuckthorn berries, Mango, Blueberries, Spinach and Jerusalem Artichoke. Alongside bio and organic meat sources, our food is certified free of the very chemicals and toxins which ultimately lead to free radical formation. Rockster antioxidant content is estimated from the ORAC values (Oxygen Radical Absorbance Capacity) of our raw ingredients.  They are expressed as µmol/TE (micromoles trolox equivalents).