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