We know what you do in food aisles: You look at stuff with 'fat free' labels slapped onto it and think "Ah, it must be healthy! Hello weight loss!" But you couldn't be further than the truth.

The reality is that these 'fat free' foods actually have fat in them, and the nutrition facts aren't telling you the whole truth. Nutrition and diet expert Bonnie Taub-Dix explains:
The FDA allows any food with .5 grams of trans fat or less to claim "0 grams trans fat" on the label. If you happen to eat several servings or a few different 'trans fat-free' foods during a day, you can wind up consuming a measurable amount, which leads to increased levels of artery-clogging, bad (LDL) cholesterol. Don't be fooled! Check the ingredient list, and if you see "hydrogenated" or "partially-hydrogenated oil" listed, step away from the package.
[US News]