Fatty acid, trans means: Trans: Fatty acid is a harmful substance made by the chemical process called hydrogenation. The process of hydrogenation is used to solidify liquid oils. It also increases shelf life and flavor stability for oils and food that have them. Vegetable shortening, as well as some crackers, cookies and margarine contain trans fatty acids. Many deep-fried food items contain trans fatty acids. The risk of developing heart disease is significantly increased by trans fatty acids, which both increase the bad LDL cholesterol levels and decrease the good HDL cholesterol. Also called trans fat.
(in Medical Dictionary)