The jury's still out. It's certainly not magical. One danger is the misconception that, if a little bit is good, then a lot is better, which is not what anyone is trying to imply. Certainly, it is better to use olive oil than to use saturated fat. However, it is also important to remember that, for some people, with respect to total energy balance and fat intake, it is important to be moderate in one's consumption of all types of fat.
Hydrogenation impairs the hypolipidemic effect of corn oil in humans.
Position paper on trans fatty acids. All Rights Reserved.