We may not like laws that regulate what we eat, but these laws work! In 2008, New York City restricted the use of partially hydrogenated vegetable oils in restaurants. These oils are a major source of dietary trans fat, which is associated with increased risk of heart disease. A cross-sectional study of 1500 fast-foods conducted before and after the implementation of this regulation found that the trans fat content per purchase decreased from 2.9 g to 0.5 g.
PositiveTip: Rather than rely on a law, perhaps we should base our food choices on what is most healthy!