There are many reasons to applaud the city of Boston for banning trans fats, and to hope that other regulatory agencies do the same. But what often gets lost in the discussion is that most trans fats are substances unknown to nature.
The proper analogy is not If we let them ban trans fats, the next time they’ll ban cheeseburgers. It’s Why should trans fats be allowed in food when other poisonous industrial substances are not?
Trans fats are created through an industrial process: pumping hydrogen into vegetable oil, a process that produces an artificial fat that doesn’t spoil as quickly as natural fats. Trans fats raise the level of bad cholesterol and lower the good. Scientists say trans fats are more dangerous than any natural fat.