Serving bad fats may not only be unhealthy for restaurants and their patrons, in Chicago it could also be illegal.

A Chicago City Council member is pushing to make it illegal for restaurants to use oils that contain trans fats, which have been tied to a string of health problems, including clogged arteries and heart attacks, according to a report in the New York Times.

If approved, nutrition experts say, the ban will be the first in a major city, following the lead of towns like Tiburon, Calif., just north of San Francisco, where restaurant owners have voluntarily given up the oils.

-- Amanda Barrett, amNY.com