10 Most Fattening Fast-Food Dishes Slideshow

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#3 Quizno’s Tuna Melt (1,535 Calories)

This beast of a sandwich sounds innocent enough: tuna salad, cheese, and fresh veggies. But combine globs of mayonnaise with cheese and fatty fish, and you’re reeling in three meal’s worth of calories at lunch alone. Not to mention that with 110 grams of fat, this sandwich busts out twice our maximum recommended intake for an entire day.

Jane Bruce