Forget the burger and fries clogging your arteries. The "Big Catch" fish platter at Long John Silver's is being called the "Worst Restaurant Meal in America."

The Center for Science in the Public Interest, a consumer advocacy group, says the dish has more than 1300 calories, 33 grams of trans fats and 3700 milligrams of sodium. The meal, which was added to the fast food chain's menu in May, comes with a large piece of breaded, fried haddock, hush puppies (fried cornmeal batter) and onion rings.

But the amount of trans fat in the dish is really the issue for the CSPI, which says it is more than twice the level of the worst KFC dish (at 15 grams of trans fat), before a 2006 CSPI lawsuit forced the chicken restaurant to stop using partially hydrogenated oil--which gives fried food its trans fat.

"Long John Silver's Big Catch meal deserves to be buried 20,000 leagues under the sea," Michael F. Jacobson, CSPI's executive director, said in a statement. "This company is taking perfectly healthy fish -- and entombing it in a thick crust of batter and partially hydrogenated oil. The result? A heart attack on a hook."

The American Heart Association recommends less than two grams of trans fats per day for a healthy life.  Most large restaurant chains have stopped using partially hydrogenated oil. CSPI says it may take legal action if Long John Silver's continues to use cooking oil which it says is unhealthy.