Otto Nuts Walnut Kernel supports cardiovascular health with its high Omega 3 content. Walnuts contain higher levels of Omega 3, antioxidants, iron and fiber compared to other nuts. 1 serving (28 g) of walnuts meets the body's daily Omega 3 requirement. Walnuts, whose benefits do not end with counting, are a food that should be consumed by people of all ages.