Volunteers with abdominal obesity consumed each of 5 identical weight-maintaining , fixed-composition diets with one of the following treatment oils ( 60 g/3000 kcal ) in beverages : 1 ) conventional canola oil ( Canola ; n-9 rich ) , 2 ) high-oleic acid canola oil with docosahexaenoic acid ( CanolaDHA ; n-9 and n-3 rich ) , 3 ) a blend of corn and safflower oil ( 25:75 ) ( CornSaff ; n-6 rich ) , 4 ) a blend of flax and safflower oils ( 60:40 ) ( FlaxSaff ; n-6 and short-chain n-3 rich ) , or 5 ) high-oleic acid canola oil ( CanolaOleic ; highest in n-9 ) .