Some processed foods may never taste the same again. The FDA wants to completely ban trans fats, issuing a tentative determination that the oils are "generally recognized as safe (GRAS). The move could lead to regulations aimed at phasing out trans fats altogether.
Hydrogenated oils, typically formed when food is fried or processed, are the main source of trans fats. They improve flavor and shelf life but research suggests they also spike cholesterol levels and are responsible for 20,000 heart attacks a year.
Trans fat occurs naturally in small amounts in meat and dariy products and is also present at very low levels in other oils.