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If you're trying to lose weight, or just trying to eat healthy, you need to steer clear of trans fats. Why? They add useless calories, build bad cholesterol and lower your good cholesterol. Unfortunately, some of your favorite restaurants -- from KFC to Bob Evans -- are using sneaky loopholes to work against you. The food industry knows that trans fats are unpopular, but partially hydrogenated oil (the stuff that trans fat dreams are made of) is cheap, so restaurants have gone to great lengths to skirt FDA regulations. Because the FDA allows the food industry to list any product with less than 0.5 grams of the dangerous lipid as having "zero trans fats," restaurants and packaged food producers can deceive consumers about serving trans fat-free food. Find out which sneaky establishments you need to be aware of to stay trans fat free.