Which is Better: Butter or Margarine?

The answer is: trans-fat-free margarine (often labeled as vegetable-oil spread these days). The reason lies in the different types of fats that are contained in butter and margarine. Butter, made from animal fats, is high in artery-clogging saturated fats. Margarine, on the other hand, is made with vegetable oil, so it contains mainly polyunsaturated fat. But don't be deceived! While margarine contains less saturated fat than butter, the hard varieties (like stick margarine) are high in trans fats.