When oils rich in polyunsaturates and monounsaturates are substituted for saturated fats and hardened oils, harmful cholesterol levels fall and beneficial cholesterol either rises or stays the same.

Exxon and state officials said the high-technology vessel had encountered difficulty processing the hardened oil that developed after the crude hadspent days in the chilly Alaskan waters, buffeted by winds and currents.

On May 22, 2004, Unilever, the corporate descendant of Joseph Crosfield & Sons (the original producer of Wilhelm Normann's hydrogenation hardened oils) announced that they have eliminated trans fats from all their margarine products in Canada, including their flagship Becel brand.