You wouldn't know it from the media coverage, but the science on the dangers of trans fats is still being debatedYou have to love the "I'm lying to you, but I expect you to not notice" formulation. Anthropogenic Global Climate Change is being debated. The Holocaust is being debated. This just means that somebody feels obfuscation is in their interest.
But, margarine -- like all these 'low fat' substitutes for real foods -- has always been suspect. And here's the official word from the New York City Department of Health:
Trans fat is the most dangerous fat. It increases LDL ("bad") cholesterol, and lowers HDL ("good") cholesterol. Based on conservative estimates, trans fat is responsible for at least 500 deaths from heart disease in New York City each year. Trans fat has no known health benefits. Unlike saturated fat, there is no safe level of artificial trans fat consumption.