What Does Fat Mean?

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What Does Zero Trans Fat Really Mean?

A reader recently asked how can a food list 0 grams of trans fat on the Nutrition Facts panel and still have partially hydrogenated vegetable oil listed in the ingredients.  Are they not the same? 


The answer is yes: trans fat is the same as partially hydrogenated vegetable oil.  Trans fats are made by adding hydrogen atoms to vegetable oil through a process called hydrogenation.  The “trans” refers to the positioning of these hydrogen atoms on different sides of the carbon atom...

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